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The ameliorative role of phlorotannin on aflatoxin B1-induced liver oxidative stress and mitochondrial injury is related to the activation of Nrf2 and Nrf1 signaling pathways in broilers J. Anim. Sci. Biotechnol. (IF 6.3) Pub Date : 2025-05-22 Xueqing Ye, Yuying Yang, Qinghua Yao, Mengyi Huang, Balamuralikrishnan Balasubramanian, Rajesh Jha, Wenchao Liu
Aflatoxin B1 (AFB1) risks animal and human health, and the liver is considered the most crucial detoxification organ. Phlorotannin (PT) is a polyhydroxy phenol that has a wide range of biological activities, including anti-oxidation and hepatoprotection, which can promote the ability of liver detoxification. This study aimed to elucidate the protective effect of PT on AFB1-induced liver damage in broilers
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High-fertility sows reshape gut microbiota: the rise of serotonin-related bacteria and its impact on sustaining reproductive performance J. Anim. Sci. Biotechnol. (IF 6.3) Pub Date : 2025-05-22 Yanli Chen, Yan Wang, Weike Shaoyong, Yanmin He, Yalin Liu, Siyu Wei, Yujie Gan, Lu Sun, Youming Wang, Xin Zong, Yun Xiang, Yizhen Wang, Mingliang Jin
Compelling evidence has established a strong link between the gut microbiota and host reproductive health. However, the specific regulatory roles of individual bacterial species on reproductive performance are not well-understood. In the present study, Jinhua sows with varying reproductive performances under the same diet and management conditions were selected to explore potential mechanisms on the
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Glucose release kinetics of different feed ingredients and their impact on short-term growth of pigs by influencing carbon-nitrogen supply synchronization J. Anim. Sci. Biotechnol. (IF 6.3) Pub Date : 2025-05-22 Mingyi Huang, Lei Xue, Yifan Wu, Qinzheng Sun, Yanwei Xu, Jia Li, Xiaoyi Yu, Yu Cao, Jingyi Huang, Zeyu Zhang, Jinbiao Zhao, Dandan Han, Defa Li, Junjun Wang
Pigs fed diets with different ingredients but identical nutritional levels show significant differences in growth performance, indicating that growth may also be influenced by the synchronicity of dietary carbon and nitrogen supply. Therefore, this study aimed to determine glucose release kinetics of various feed ingredients, to investigate a glucose release pattern that is conducive to synchronized
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High fat diet (HFD) induced hepatic lipogenic metabolism and lipotoxicity via Parkin-dependent mitophagy and Errα signal of Pelteobagrus fulvidraco J. Anim. Sci. Biotechnol. (IF 6.3) Pub Date : 2025-05-21 Angen Yu, Zhiwei Hao, Xiaolei Wei, Xiaoying Tan, Ester Zito, Hua Zheng, Zhi Luo
Mitophagy is an essential cellular autophagic process which maintains mitochondrial homeostasis, but its role in high fat diet (HFD)-induced lipid accumulation is unclear in the yellow catfish. Thus, this study aimed to elucidate mechanism of mitochondria mediating HFD-induced hepatic fat accumulation. In the present study, yellow catfish were fed three diets with dietary fat at 6.31% (low fat; LFD
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Multi-omics profiling reveals Poria cocos polysaccharides mitigate PEDV-induced intestinal injury by modulating lipid metabolism in piglets J. Anim. Sci. Biotechnol. (IF 6.3) Pub Date : 2025-05-20 Qian Zhang, Shuaijie Wang, Mengjun Wu, Zihan Tan, Tao Wu, Dan Yi, Lei Wang, Di Zhao, Yongqing Hou
Porcine epidemic diarrhea virus (PEDV) infection poses a significant challenge to the swine industry, with limited effective control measures available. Poria cocos polysaccharides (PCP) is the primary active ingredient of Poria cocos, and has been demonstrated to show beneficial effects on intestinal damage in previous studies. However, its mechanism has not been fully understood. In the present study
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PSIV-11 Effect of a Bentonite on performance of finishing pigs in a commercial farm in Mexico J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jose Lopez, Alfonso Echave
This study evaluated the effect of incorporating a Bentonite (Proteck a bioactive mineral-based feed additive, manufactured by Elanco, Greenfield, IN) into the finisher diet and its impact on pig performance in a commercial farm setting. Previous research has demonstrated that Proteck can enhance both performance and gut microbiota in pigs (Rong et al., 2019, 2021). In this study, Bentonite was added
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PSIII-17 Evaluating calcium administration protocols around farrowing on sow performance J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Abigail K Jenkins, Sierra M Collier, Sara Virdis, Olivia Cataldo, Michael D Tokach, Joel M DeRouchey, Jason C Woodworth, Katelyn N Gaffield, Jordan T Gebhardt, Robert D Goodband, Kyle Coble, Paul Corns, Jimmy Karl, Tag Bradley, Erick Barrera, Isis Arteaga, Jose A Soto, Andrew Bents
A total of 933 mixed-parity sows (Line 1050, PIC) and their litters were used to evaluate the effect of calcium administration protocols around farrowing on sow performance. Sows were blocked by parity category and past stillbirth record then allotted to 1 of 3 treatments with 310-312 replications per treatment. Treatments included: 1) Control in which sows received no intervention; 2) calcium chloride
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PSV-18 Effects of oats fodder and quantitative feed restriction on egg and meat quality of native Bangladeshi geese J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Umme Saleheen Ety, Md Sazedul Karim Sarker, Farhana Sharmin, Masud saleheen rana, Nushrat Nourin Lisa, Aminul Islam
The present study was designed to assess the efficacy of Oats (Avena sativa) fodder as a supplementation along with concentrate feed for determining egg quality, meat color and texture, pH, drip loss, cooking loss, and water holding capacity (WHC) of Bangladeshi White and Gray geese varieties. A total of 60 adult geese from White and Grey varieties were reared in a semi-intensive production system
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194 Substituting DDGS with soybean meal in feedlot diets: Impacts on small intestinal amino acid flow and digestibility J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Grace H Jardon, Edeino Detmann, Zachary K Smith, Warren C Rusche, Ana Clara B B Menezes
Objectives of this study were to evaluate the effects of substituting DDGS with soybean meal (SBM) on nutrient and amino acid (AA) intake, flow, and digestibility. Red Angus steers (n = 4; BW = 360 ± 9 kg) with ruminal, duodenal, and ileal cannulas were used in a 4 × 4 Latin square. Diets consisted of dry-rolled corn (70%), hay (10%), liquid supplement (5%), and test ingredients (15%). Treatments were
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PSII-15 Evaluation of a blend of phytochemicals and carboxylic acid on complete feed when inoculated with porcine epidemic diarrhea virus, porcine reproductive and respiratory syndrome virus, and SVA virus 1 J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Francisco Domingues, Olivia Harrison, Jianfa Bai, Martee Larson, Roman Pogranichniy, Nicole Holcombe, Othmar Lopez, Cassandra K Jones
Chemical mitigants have been found to decrease virus concentrations in swine feed. Continued research is needed to identify the appropriate inclusion levels and application time for different viruses in this matrix. The objective was to evaluate different inclusion levels of a synergistic blend of phytochemicals and carboxylic acid (PCA) when applied either before virus inoculation (pre-inoculation)
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85 Factors impacting parentage in heterospermic inseminations from Duroc boars J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Lexi M Ostrand, Ashley Hartman, Amanda Cross, Brady McNeil
Heterospermic inseminations are widely used in the swine industry due to their ability to maximize conception rates from mixing semen from various sires. The use of heterospermic insemination presents an opportunity to further examine the relative fertility of boars through subsequent paternity testing on offspring produced from heterospermic inseminations. The objective of this investigation was to
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28 Influence of corn based fibrous co-products on ileal mucosa gene expression and mucosal associated microbiome of growing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Hannah Miller, Chiron J Anderson, Stephan Schmitz-Esser, Aaron Ericsson, Amy L Petry
The microbiome located on the mucosal layer of the gastrointestinal tract is essential for nutrient exchange and host communication. Understanding the presence of the microbiome and its relationship to the host gene expression is essential to fully understand nutrient uptake and ingredient utilization. High inclusions of industrial corn co-products in grow-finish diets may affect gastrointestinal tissue
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220 Effects of using soybean meal, canola meal, and corn distillers dried grains with solubles on net energy, greenhouse gas emission, and nitrogen balance in group-housed pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jimena A Ibagon, Su A Lee, Hans H Stein
The objective was to test the null hypothesis that there are no differences in net energy (NE), greenhouse gas emission, and N balance in pigs fed diets containing soybean meal (SBM), canola meal (CM), and corn distillers dried grains with solubles (DDGS). Three dies contained corn and one of the three feed ingredients (i.e., SBM, CM, or DDGS). A total of 24 growing pigs (initial weight = 46.84 ± 2
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PSIII-12 Evaluation of dietary acidifiers in low acid-binding capacity-4 diets on nursery pig performance and fecal dry matter J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Ethan B Stas, Michael D Tokach, Joel M DeRouchey, Jason C Woodworth, Robert D Goodband, Jordan T Gebhardt
A total of 300 pigs (initially 6.1 kg) were used to evaluate dietary acidifiers in low acid-binding capacity-4 (ABC-4) diets on nursery pig performance and fecal dry matter (DM). At weaning, pigs were randomly allotted to 1 of 6 dietary treatments. There were 5 pigs per pen and 10 replications per treatment. Pigs were fed experimental diets in two phases with phase 1 fed from d 0 to 10 post-weaning
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224 Comparing the in vitro fermentation characteristics of ruminal and cecal contents from feedlot cattle J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Payton Block, Paige Berkmeyer, Joshua C McCann
The objective was to compare the in vitro fermentation characteristics of ruminal and cecal contents from feedlot cattle after slaughter. Evaluating ruminal and cecal fermentation can further develop an understanding of nutrient digestibility and microbial activity that are critical to cattle health and nutrition. Historically, ruminal fermentation has been studied more in depth compared with the cecum
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207 Temporal heat stress impact on gene regulation of skeletal muscle hypertrophy in bovine myocytes J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Erika P Eckhardt, Andrea M Luttman, Cedric Gondro, Jongkyoo Kim
Skeletal muscle can be susceptible to environmental stress stimuli, causing shifts in molecular responses. This study elucidated the degree of molecular response in bovine myocytes by measuring exome-wide transcriptome abundance following temporal heat stress. Bovine satellite cells (BSCs) were extracted from Holstein calves (n=3, BW: 77.10 ± 2.02 kg). Following myogenic differentiation, confluent
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PSVI-15 Impact of high zinc oxide supplementation or lignocellulose supplement on fecal microbiota of weaned piglets J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Eya Selmi, Clara Negrini, Antony T T Vincent, Marie-Pierre Letourneau-Montminy, Luca Lo Verso, Bertrand Medina, Frederic Guay
This project aimed to study the effect of high zinc oxide (ZO) and fiber supplementation from lignocellulose (LIGCEL) on the fecal microbiota of weaned piglets. At weaning (21 days), 150 piglets (6.39 ± 0.28 kg) were transferred to a nursery farm, and divided into 30 pens of 5 piglets each according to their weaning weight. Each pen was assigned to one of the following treatments: Control (CON, 150
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PSII-14 Effect of a consensus bacterial 6-phytase variant (PhyG) on energy and amino acid digestibility and the impact on production performance in pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Ester Vinyeta, Deepak E E Velayudhan, Pau Aymerich, Janet C Remus, Yueming Dersjant-Li
Phytase is commonly used in pig feed to improve the availability of phosphorus (P) and other minerals such as calcium (Ca) and sodium (Na). However, a phytase that can break down phytate quickly and completely in the early gut, can also reduce the anti-nutritional effect of phytate, resulting in an improved amino acid (AA) and energy digestibility. Recent studies demonstrated that a consensus bacterial
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277 Management of gilts to maximize lifetime productivity J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Billy Flowers
The objective of this presentation is to review gilt characteristics associated with enhanced lifetime productivity and discuss their possible incorporation into management programs. The last 40 days of gestation is a crucial period of reproductive organ development. As a result, there is a positive relationship between birthweight and adult reproductive performance with most studies reporting decreased
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287 The role of Intestinal health on overall growth performance and the influence of nutrients J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Sung Woo Kim, Yesid R Garavito-Duarte, Alexa R Gormley, Hyunjun Choi, Jung Sung
Dramatic changes to the external environment during the post-weaning period impose significant stress upon the gastrointestinal tract of pigs. This effect is most evident in the small intestine, where antinutritional, allergenic, antigenic, and pathogenic components from dietary sources cause alteration of the bacterial populations in the lumen, as well as in the mucosal tissue. The mucosal microbiota
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96 An evaluation of soybean meal inclusion rate and replacement of Dried Distillers Grains and Solubles (DDGS) in pigs fed from wean to finish J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Joseph Halbur, Jessica Lira da Silva, Ryan S Samuel, Robert C Thaler, Eric M Weaver
Replacement of DDGS with soybean meal (SBM) and soy hulls at various inclusion rates may effect the performance and nutrient output of manure in wean-to-market pigs. The protein and nutrient composition of SBM combined with soy hulls diets may be better utilized by pigs when compared to DDGS-containing diets. The increased demand for Midwest-grown soybeans, driven by new soybean crushing plants, may
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PSIII-10 Effect of different copper sources on growth performances in nursery pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Daniel G Rosales, Ryan S Samuel, Eric M Weaver
Copper plays a significant role in the growth performance of pigs, influencing feed efficiency and nutrient retention. Recent studies indicate that the source and concentration of copper can markedly affect growth metrics such as average daily gain (ADG) and feed conversion ratios. A total of 1,144 newly weaned pigs (initial body weight (BW) 5.9 ± 1.2 kg) were used to evaluate the effects of copper
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PSII-1 Borrelia burgdorferi Seroprevalence in horses J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Rebecca Thompson, Virginia Buechner-Maxwell, Robin Foster, Allie Andrukonis, Erica Feuerbacher
Borrelia burgdorferi infection, also commonly called Lyme disease, has been attributed as the causative factor for many symptoms in animals and humans, including fever, joint pain, muscle pain, stiffness, rash, and neck pain. Borrelia burgdorferi seroprevalence in horses in southwest Virginia was last evaluated in 2003-2004. Since other areas have seen increased seroprevalence rates, the hypothesis
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18 Comparison between drying methods and storage time on the functional value of a trubs, hops, and yeast mixture, on growth performance and intestinal health of nursery pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Alexa R Gormley, Nathalia Camargo, Brock Ashburn, Robert Bryant, Sung Woo Kim
A trubs, hops, and yeast mixture (THYM) generated as a co-product of craft brewing contains high levels of hop acids and yeast cells, bioactive compounds that could positively influence health and growth in pigs. These co-products have a high moisture content and must be dried to facilitate transport and mixing into diets. Drying methods utilizing heat can cause the loss of functional volatile compounds
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8 Effect of weaning body weight and nursery phase feeding budget on nursery pig growth performance, fecal dry matter, and economics J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Julian Arroyave Jaramillo, Jason C Woodworth, Jordan T Gebhardt, Michael D Tokach, Robert D Goodband, Katelyn N Gaffield, Joel M DeRouchey
A total of 270 weanling pigs (initially 6.1 ± 0.26 kg) were used to evaluate the effects of weaning weight and phase feeding budget on nursery performance, fecal dry matter, and economics. At weaning, pigs were sorted by body weight (BW) and then randomly assigned to one of the three dietary treatments in a 3 × 3 factorial with main effects of nursery phase feeding budget (high, medium, or low) and
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PSV-1 A comparison of Dhurrin-free and conventional varieties of sorghum sudangrass baleage J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Nathan E Rehder, Logan Diller, Tara L Felix
Dhurrin is a cyanogenic glycoside present in sorghum cultivars. Dhurrin is converted to prussic acid after a catalytic event, such as frost, wilting, or trampling. Prussic acid is toxic to grazing cattle, and death occurs within minutes after consumption. The objectives of this study were to compare a naturally selected, dhurrin-free (DF) sorghum sudangrass with a conventional brown midrib sorghum
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PSII-5 Characterization of the endometrial epithelium of postpartum dairy cows using a multimodal transcriptomic approach to investigate disease programming of fertility J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Isabella Sellmer Ramos, Joao G N Moraes, Monica O Caldeira, Matthew C Lucy, Amanda L Patterson
The productive lifespan of cattle destined to milk production is currently suboptimal in most dairy systems across the US due to the high incidence of health disorders and reproductive failure affecting postpartum lactating cows. Bacterial access to the underlying endometrial stroma, early postpartum, can create a chronic inflammatory state. Chronic endometrial inflammation is linked to metritis, an
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63 Evaluating the impact of a structured training program on university and high school student perceptions of the swine industry and related career opportunities J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Kara E Flaherty, Abby Waldrop, Haley Schewecke, Megan Meyer, Jayden Black, Marissa Hall, Jacqueline Nolting, Maria Pieters, Pedro E Urriola, Talita Resende
Throughout recent years, the U.S. swine industry has experienced a severe shortage of labor. As workforce demographics begin to shift, there is an increasing need for agricultural exposure in younger generations. In universities, many undergraduate animal sciences students are only exposed to swine curriculum in their senior year. This late exposure to career opportunities may negatively impact subsequent
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303 Award Talk: Effects of L-glutamate and L-aspartate supplementation on growth performance, diarrhea severity, immune responses, intestinal barrier integrity of weaned piglets challenged with enterotoxigenic Escherichia coli F18 J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Supatirada Wongchanla, Sangwoo Park, Kwangwook Kim, Shuhan Sun, Xunde Li, Yanhong Liu
L-glutamate (Glu) and L-aspartate (Asp) play critical roles in cellular metabolism and immune regulation in pigs. This study investigated the effects of Glu and Asp supplementation on growth performance, immune responses, and intestinal integrity in weaned piglets challenged with enterotoxigenic Escherichia coli (ETEC) F18. Forty-nine weaned pigs (8.18 ± 1.54 kg BW) were randomly assigned to one of
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PSIV-A-6 The effects of botanical composition of pasture on fecal egg counts in grazing sheep J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jennifer E Earing, Kinze Haywood, Keith Stewart, Joshua C McCann
Grazing sheep are prone to harboring gastrointestinal parasites that often impact animal health and productivity. The objective of this study was to evaluate the effect of botanical composition of pasture on parasitic fecal egg counts in grazing sheep. Dorset × Suffolk crossbred ewes (n=34; BW=75.3 kg) and their offspring (n=57; BW=23 kg) were used. Four weeks prior to the start of the study, all ewes
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295 Genomic selection for improved resilience: A closer look to its implementation J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Francesco Tiezzi
Before exploring the factors that determine it, it is crucial to first define the concept of resilience. Resilience is not a phenotype therefore is not directly observable or quantifiable as a phenotype. Consequently, it can only be measured or quantified using appropriate indicators. However, developing such indicators requires a clear and consistent definition to guide their estimation. Although
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83 Body weight from birth to 260 days of age for pigs with functional deletions in growth hormone receptor (GHR) promoters created using CRISPR/Cas9 gene editing J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Alicia N Denton, Caroline G Lucas, Timothy J Safranski, Randall S Prather, Kevin D Wells, Diana Canaveral Restrepo, Matthew C Lucy
Growth hormone controls animal growth, lactation, and reproduction. The actions of GH are dependent on the GHR. Two promoter complexes control GHR expression. The GHRP1 controls the liver-specific inducible expression of the GHR1A mRNA. The GHRP2 controls the non-tissue specific constitutive expression of GHR1B mRNA. The objective was to test the functional significance [effect on body weight (BW)]
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176 Comparing the efficacy of different organic zinc sources on growth performance of broiler chickens J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Luiz Albino, Horacio Rostagno, Raquel Pereira, Maria A Rodriguez Quiros, Elise Nacer Khodja
Organic minerals are those bonded to one or more carbon-containing molecules to increase their bioavailability. Most common ligands are proteinates, amino acids and small peptides. Not all organic minerals are equivalent, their quality depending on strength and stability of the bond with the ligand, but also on the type of ligand as it’s defining its absorption pathway and efficiency. This study aimed
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144 Evaluating the effect of different doses of an organic acid and monoglyceride blend (Furst Strike) on nursery and finisher growth performance parameters J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Thomas A Crome, Nicholas K Gabler, Greg A Hartsook, Pornpim Aparachita, Steve J J England, Woong B Kwon, Fredrik Sandberg
The increased antibiotic resistance to enteric pathogens such as Escherichia coli has led to a need for nutritionally supported gut health. We quantified the wean-to-market impact of poor enteric health in nursery pigs nutritionally supplemented with or without a blend of organic acids and esterified medium-chain fatty acids (Furst Strike, FS). Our objective was to investigate the optimal inclusion
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138 Effect of dietary leucine on the tryptophan requirement in diets for 25-50 kg growing pigs fed soybean meal or corn fermented protein J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Andrea Paola P Mallea Ortiz, Hans H Stein
An experiment was conducted to test the hypothesis that the optimum Trp:Lys ratio in diets for growing pigs is greater if corn fermented protein (CFP) rather than soybean meal (SBM) is used as the protein source in the diets. Two basal diets based on corn and SBM or corn and CFP were formulated. Both diets contained 0.90% SID Lys and both diets had a standardized ileal digestible (SID) Trp:Lys ratio
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172 Utilization of golden pennycress meal in broiler diets with a flavor additive J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Marley M Knowles, Nicholas Heller, Justin W Rickard, Drew W Lugar
The objective of this pilot study is to evaluate performance in broiler chickens fed diets containing golden pennycress (GPC) meal, with and without a flavor additive. Cornish Cross three-day-old chicks (n=12) were randomly assigned one of three diets. Golden pennycress (Thlaspi arvense) is a winter cover crop grown in the Midwest that is rising in popularity as a cash crop used for biofuel production
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PSIV-13 Effect of a bioactive Bentonite supplementation on sow performance in three commercial farms in México J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jose Lopez
This study investigated the effects of incorporating a Bentonite (Proteck, a bioactive mineral-based bentonite feed additive from Elanco Animal Health USA) into gestation and lactation diets on reproductive performance in sows. Previous research has shown that Proteck reduces oxidative stress and enhances both performance and gut microbiota in sows (Taylor et al., 2019; Rong et al., 2019). We utilized
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PSIII-2 Effects of hand-fed versus self-fed supplementation on stocker steer growth, performance, and forage production on smooth bromegrass pastures J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jonathan Jacquez, Tatiana M Jones, Jaymelynn K Farney
eed products and additives are available in a multitude of options to increase performance, animal health, and efficiency of cattle while also fitting the individual needs of producers. A variety of options are used to meet the broad range of management situations, including self-feeding, daily delivery and liquid delivery. The objective of this study was to determine steer performance based on supplementation
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PSVI-17 Morphological alterations on the duodenum and skeletal muscle of the offspring of sows supplemented with FLAVORAD RP® during gestation J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Tulio Cezar Caiafa de Alkmim, Jonathas Medeiros de Almeida, Abner Lacerda Shinkawa, Letícia Pinheiro Moreira, João Vitor Lopes Ferreira, Dayanne Kelly Oliveira Pires, Isadora Maria Sátiro de Oliveira, Francisco Alves Pereira, Clarice Speridião Silva Neta, Felipe Norberto Alves Ferreira, Anália Maria Ribeiro da Silva, Fabrício Almeida de Santos, Fernanda Radicchi Campos Lobato de Almeida
Sows nutritional management during gestation is a crucial factor, which influences offspring postnatal performance. Alternative nutritional supplements, such as functional amino acids, may be offered to gestating sows to ensure optimal embryonic and fetal development. Thus, studying the effects of such supplementation on the performance of litters is essential, particularly in commercially relevant
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237 Assessing the influence of sow loading strategy, functional teat number, and parity on litter performance J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Elizabeth M Due, Brady McNeil, Amanda Cross, Ashley Hartman
Preweaning mortality presents a significant challenge for the swine industry, due to increased litter sizes that often exceed available functional teats. Therefore, it is imperative to understand the relationship between number of functional teats and piglet survival. Data from 1,261 multiparous F1 sows (DNA L241, DNA Genetics, Columbus, NE) were collected to investigate the impact of functional teat
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120 The effect of four different implant programs on feedyard performance, health, and carcass characteristics of native light weight beef heifers J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Ty J Schoelerman, John P Hutcheson, Lee-Anne J Walter, Wade T Nichols, Ben P Holland, Alyssa B Word
Due to new reimplant restrictions, delaying implant administration after arrival could prevent inadequate implant coverage at the end of the feeding period. Therefore, the objectives of this study were to determine the effects of a traditional reimplant program [Synovex Choice (100 mg trenbolone acetate and 14 mg estradiol benzoate) on arrival reimplanted at 110 days with Synovex Plus (200 mg trenbolone
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216 Effect of conditioning time on standardized ileal digestibility of amino acids and total tract digestibility of energy in diets fed to growing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Diego A Lopez Diaz, Matt D Miesner, Jordan T Gebhardt, Hans H Stein, Charles R Stark, Chad B Paulk
Two experiments were conducted to determine the effect of conditioning time prior to pelleting on digestibility of energy and AA in diets fed to growing pigs. For both experiments, the dietary treatments consisted of a mash diet and 3 separate pelleted diets that were conditioned for 30, 60, or 180s prior to pelleting. For Exp 1, Twelve barrows (DNA 200 x 400, DNA; BW: 34.1±1.03 kg) were allotted to
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204 The effect of feeding bacillus subtilis on fecal microbiota and antimicrobial resistance gene composition of weaned pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Yating Zhao, Anneliek ter Horst, Shuhan Sun, Shya Navazesh, Peng Ji, C Titus Brown, Yanhong Liu
Our previous research observed that dietary supplementation of 500 mg/kg of Bacillus subtilis reduced the frequency of diarrhea and enhanced growth performance of weaned pigs experimentally infected with a pathogenic Escherichia coli (E. coli). This study aimed to further investigate the effects of dietary Bacillus subtilis or carbadox on the functional antimicrobial resistance gene (AMR) composition
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PSIV-14 Effect of water nipple size on nursery pig performance J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Paulo Azevedo, Mark Knauer
The objective of the current study was to evaluate nipple drinker size on nursery pig performance. In lactation, all piglets had access to a baby piglet water nipple placed near the sow feeder. At weaning, piglets were placed into one of four nursery rooms with supplemental heating, mechanical ventilation and tri-bar flooring. Pigs (n=756) were randomly allocated to 84 pens (9 pigs per pen, 0.23 m2
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136 Nitrogen retention was not different in pigs fed diets supplemented with 65 parts of DL-Methionine or 100 parts of MHA-Ca J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jessica P Acosta, S Maria S Mendoza, John K Htoo, Hans H Stein
An experiment was conducted to test the hypothesis that pigs fed a low crude protein diet supplemented on a product-to-product (wt-wt) basis with 65 parts of DL-methionine (DL-Met, 99%) or 100 parts of the calcium salt of the hydroxy analog of DL-Met (MHA-Ca, 84%) will not have different N retention. A mash Met-deficient basal diet [0.23% standardized ileal digestible (SID) Met and 0.55% SID Met +
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PSV-13 Influence of xylanase supplementation in growing-finishing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Gemma González-Ortiz, Laura A Merriman, Gustavo Cordero
Xylanase is commonly incorporated into U.S. swine finishing diets due to feed efficiency and livability responses. The mechanisms behind this benefit includes reducing digesta viscosity, releasing entrapped nutrients, and hydrolyzing fiber into key arabinoxylan oligosaccharides fermented by microbe that generate short-chain fatty acids. The objective of this study was to evaluate the efficacy of a
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41 Effect of space allocation on feeding behavior in grow-finish pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Mackenzie Griffin, Jayden Lawrence, Marley M Knowles, Michael Barrowclough, Justin W Rickard
The objective of this study was to evaluate the feeding behavior of grow-finish pigs in pens with two different floor space allowances. A total of 159 commercial crossbred barrows (n = 90; 25.87 ± 7.43 kg) and gilts (n = 69; 28.74 ± 4.08 kg) were housed in single gender pens and fed a common diet for approximately 14 weeks. At the start of the trial pigs were randomly assigned to pens providing one
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107 The effect of water acidifiers on growth performance and general health of commercially housed weaned pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Atta Kofi Agyekum, Stephanie Torrey, Francis Simard, Mohsen Abedin
The study compared the efficacy of supplementing the drinking water with acidifiers on growth performance and general health of commercially housed weaned pigs. The study design was a randomized complete block using 1152 mixed-sex weaned pigs (~21 days old; 6.99 ± 0.31 kg BW) assigned to three treatments (384 piglets/ treatment) with 24 replicate pens (16 pigs/pen) per treatment. The treatments were:
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187 Ileal and total tract digestibility of amino acids and minerals in growing pig diets supplemented with phytase enzyme J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Jose A Soto, Henrique S Cemin, Morgan Hart, Sharlie A Hansen, Ernie L Hansen, Jamil E G Faccin
While positive effects of phytase supplementation on mineral digestibility are typically observed, the effects on amino acid (AA) digestibility have been inconsistent, which might be related to the concentration of dietary phytate among other factors. Therefore, an experiment was conducted to determine the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of crude protein
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112 Effects of dietary acidifiers and other low acid-binding capacity-4 formulation strategies on nursery pig performance and fecal dry matter J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Ethan B Stas, Michael D Tokach, Joel M DeRouchey, Jason C Woodworth, Robert D Goodband, Jordan T Gebhardt
A total of 725 pigs (initially 5.9 kg) were used to determine the effects of low acid-binding capacity (ABC-4) formulation strategies on nursery pig performance and fecal dry matter (DM). At weaning, pigs were randomly allotted to 1 of 5 dietary treatments. There were 5 pigs per pen and 29 replications per treatment across two facilities. Pigs were fed experimental diets in two phases with phase 1
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141 Effect of benzoic acid, myristic acid, and Aspergillus Niger on the metabolizable energy and nitrogen retention of corn, soybean meal and DDGS-based diets fed to growing-finishing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Diego A Lopez Diaz, Charles R Stark, Chad B Paulk
The objective of this study was to determine the effect of benzoic acid, myristic acid, and Aspergillus niger on the concentration of digestible (DE) and metabolizable energy (ME) and nitrogen retention of commercial diets fed to growing pigs. A total of 10 growing barrows (initial BW: 34.1 ± 1.03 kg) were allotted to a replicated 5 × 5 Latin square design with 5 treatments and 5 periods for a total
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PSVI-18 Mycotoxin exposure and its impact on inflammatory response and growth in pigs and intestinal epithelial cells J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Madison N Brackett, Abiola S Lawal, Yuechi Fu, Nathan Horn, Kolapo M Ajuwon
The objective of these studies was to determine the effect of pre-exposure to the mycotoxin deoxynivalenol (DON) on the response of intestinal porcine epithelial cells (IPEC-J2) and nursery pigs to immune challenge with F18 E. coli and lipopolysaccharide (LPS), respectively. In-vitro experiments involved four experimental treatments: Control, DON (0.5μM, 24hr), F18 E. coli (multiplicity of infection
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191 Field validation of mob composite sampling protocol to estimate herd parasitism in cattle J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Ashlee Gibbons, Grant I Crawford, James Slightom, Haley E Larson
Cattle, when initially placed into the feedlot, frequently carry a significant internal parasite load, that if unaddressed, can result in weight loss, poor growth, and increased susceptibility to illness due to immune suppression. To combat these challenges, many feedlot animal health protocols include administering anthelmintic treatments immediately upon feedlot arrival. The detection of parasite
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246 Maternal resilience to gestational social stress impacts offspring cortisol response at weaning but not post-weaning growth or aggression J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Andrea M Luttman, Janice M Siegford, Nancy E Raney, Catherine W Ernst
Exposure to social stress during gestation has been demonstrated to influence offspring health, growth, and behavior. This study aimed to characterize differences in weaned pigs previously selected from sows classified as exhibiting resilience or vulnerability to gestational social stress using salivary cortisol. In short, purebred Yorkshire litters born to first or second parity sows were selected
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29 Impact of insoluble corn-based fiber on fecal microbiome and short chain fatty acid composition in growing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Hannah Miller, Laura Schroer, Emily Petzel, Chiron J Anderson, Stephan Schmitz-Esser, Aaron Ericsson, Amy L Petry
Through the process of fermentation, microbes produce short chain fatty acids (SCFA). Pigs can obtain energy from fibrous feedstuffs through a symbiotic relationship with their gastrointestinal microbiome by absorbing SCFA. By improving our understanding of how the microbiome responds to changes in insoluble dietary fiber, the utilization of fibrous feed ingredients in swine diets may be improved.
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PSV-2 Effect of feeding level during feedlot backgrounding on animal growth and feed efficiency of the winter-spring period J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Natalia Zabalveytia, Alvaro Simeone, Oscar Bentancur, María V Burjel, Stefania Pancini, Virginia Beretta
This study evaluated the effect of winter backgrounding feeding system (grazing vs. feedlot) and the amount of feed offered in the feedlot (FO) on average daily gain (ADG) and feed-to-gain ratio (FG) during the overall winter-spring period (182 days). Forty Hereford female calves (159 ± 25 kg body weight (BW)) were randomly assigned to one of five treatments during winter (98 days): grazing winter
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264 A holistic nutritional approach for modulation of microbiome to improve pig performance and support health J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Brooke Smith, Richard Faris, Wesley Schweer, Sabrina May, Qiong Hu, Caroline Gonzalez-Vega, Ehsan Khafipour
The gut microbiome is in an intimate symbiosis with its host and their interactions have profound effects on the physiology, health, and performance of pigs across all life stages. Within this symbiosis, the establishment of a healthy and productive gut microbiome is influenced by numerous factors including diet and non-diet related factors, though feed composition and feeding strategy remain major
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76 Lactation feed intake and seasonal effects on reproductive performance and downstream impact on lifetime performance J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Gregory Krahn, Grant I Petersen, Michael E Johnston, Katherine A McCormick, Michelle N McCallum, Christopher L Puls
Improved genetics in commercial pig production have resulted in larger litter sizes that require increased milk production and increased energy requirements for the sow to raise the litter. Individual sow (n=10,797) data collected from June 2018-December 2023 at United Animal Health’s Research Farms were analyzed to examine potential factors impacting sow and progeny performance. Radio-Frequency Identification
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294 Award Talk: Longitudinal assessment of Fusobacterium necrophorum and Salmonella enterica concentration and prevalence in relation to feedlot cattle health and management J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Colten W Dornbach
Our objective was to longitudinally assess the prevalence of Fusobacterium and Salmonella in relation to feedlot cattle health and management. In Exp. 1, crossbred steers (n = 227; BW = 353 ± 39.6 kg) were transported to a research feedlot and fed a high-concentrate diet. Nasal, ruminal fluid, and fecal samples were aseptically collected following feedlot arrival (d 5), 1 wk after adaptation to a finishing
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24 Digestibility of energy and concentrations of digestible and metabolizable energy in diets containing pistachio blanks fed to growing pigs J. Anim. Sci. (IF 2.7) Pub Date : 2025-05-20 Yeonwoo Kim, Su A Lee, Hans H Stein
Pistachio blanks are a mixture of pistachio byproducts that consists of hardshell, tree branches, unsized seeds, and unripe seeds. They can be used as a high-fiber ingredient in diets for pigs, but there is no information about the nutritional value when fed to pigs. Therefore, an experiment was conducted to test the null hypothesis that apparent total tract digestibility (ATTD) of gross energy (GE)