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Invited review: The effect of weaning practices on dairy calf performance, behavior, and health – a systematic review J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Allison Welk, Heather W. Neave, Margit Bak Jensen
The aim of this systematic review was to summarize the literature assessing the effects of weaning practices on performance, behavior, and health of dairy calves. Only published, peer-reviewed articles written in English and specifically assessing the effects of weaning treatments on dairy calves were eligible for inclusion. Studies had to include 2 or more treatment groups that addressed at least
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Impact of Processing Methods on the Distribution of Mineral Elements in Goat Milk Fractions J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Junyu Pan, Zhongna Yu, Jiayin Dai, Hongning Jiang, Cuiping Shi, Qijing Du, Wanting Zhu, Latiful Bari, Rongbo Fan, Jun Wang, Yongxin Yang, Rongwei Han
Milk and dairy products are excellent sources of mineral elements, including Ca, P, Mg, Na, K and Zn. The purpose of this study was to determine the effect of non-thermal (homogenization) and thermal (heat treatment) treatments on the distribution of mineral elements in 4 milk fractions: fat, casein, whey protein, and aqueous phase. The study results revealed that the distribution of mineral elements
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The A1/A2 β-casein genotype of cows, but not their horn status, influences peptide generation during simulated digestion of milk J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 A.-M. Reiche, M.C. Martín-Hernández, A. Spengler Neff, B. Bapst, C. Fleuti, F. Dohme-Meier, H.D. Hess, L. Egger, R. Portmann
The effect of the horn status of cows on their milk composition and quality is a controversial research topic. In this study, 128 milk samples from 64 horned and 64 disbudded Brown Swiss and Original Braunvieh cows were collected from alpine farms where both horned and disbudded cows were grazing on mountain pastures. The samples were analyzed for their detailed composition and protein digestion in
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The association between teat shape and bimodal milk ejection in Holstein dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 M. Wieland, M.E. Spellman, H. Somula, A. Singh
Our objectives were to investigate the association of teat shape with (1) bimodality (2) incremental milk flow rates (average flow rates during the first 15 s, 15–30 s, 30–60 s, and 60–120 s of milking), and (3) peak milk flow rate in Holstein dairy cows milked 3 times per day. In this prospective cohort study, we analyzed 220,928 milking observations that were collected from 2,520 cows from a single
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The affinity of milk fat globule membrane fragments and buttermilk proteins to hydroxyapatite J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 J. Iung, A. Doyen, G. Remondetto, Y. Pouliot, G. Brisson
Buttermilk differs from skim milk by the presence of milk fat globule membrane (MFGM) fragments that are released during cream churning. MFGM is rich in health-promoting components, such as phospholipids and membrane proteins, but these compounds have a negative impact on buttermilk techno-functional properties in dairy applications. The isolation of MFGM from buttermilk improved its functionality
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Bile acid profiles and mRNA abundance of bile acid-related genes in adipose tissue of dairy cows with high versus normal body condition J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Lena Dicks, Katharina Schuh-von Graevenitz, Cornelia Prehn, Hassan Sadri, Eduard Murani, Morteza Hosseini Ghaffari, Susanne Häussler
Besides their lipid-digestive role, bile acids (BA) influence overall energy homeostasis, such as glucose and lipid metabolism. We hypothesized that BA along with their receptors, regulatory enzymes, and transporters are present in subcutaneous adipose tissue (scAT). In addition, we hypothesized that their mRNA abundance varies with the body condition of dairy cows around calving. Therefore, we analyzed
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Responses to incremental nutrient supply on energy and protein metabolism in pre-weaning dairy calves J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 L. Amado, L.N. Leal, H. Berends, P. van Keulen, J. Martín-Tereso, W.J.J. Gerrits
Recently reviewed development objectives and feeding practices in young dairy calves require an adaptation of nutrient recommendations set for milk replacer (MR) composition. Nutrient requirements of calves younger than 21 d of age, and those of calves fed with high levels of milk replacer are insufficiently quantified. The efficiency at which macronutrients are utilized, particularly protein, substantially
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High-resolution melting real-time PCR assays for subtyping of five diarrheagenic Escherichia coli by a single well in milk J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Shan Shan, Rui Li, Weicheng Xia, Xiaoyu Tong, Yanmei Huang, Yucheng Tan, Silu Peng, Chengwei Liu, Shuanglong Wang, Daofeng Liu
Diarrheagenic (DEC) is a kind of foodborne pathogen that poses a significant threat to both food safety and human health. To address the current challenges of high prevalence and difficult subtyping of DEC, this study developed a method that combined multiplex polymerase chain reaction (PCR) with high resolution melting (HRM) analysis for subtyping 5 kinds of DEC. The target genes are amplified by
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Ameliorating effect of 2ʹ-Fucosyllactose and 6ʹ-Sialyllactose on lipopolysaccharide-induced intestinal inflammation J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 J.-Y. Kim, S. Lee, G. Kim, H.J. Shin, E.J. Lee, C.S. Lee, S. Yoon, E. Lee, A. Lim, S.H. Kim
Human milk oligosaccharides (HMO) affect gut microbiota during neonatal development, particularly with respect to the immune system. Bovine milk-based infant formulas have low oligosaccharide contents. Thus, efforts to fortify infant formulas with HMO are being undertaken. Two major HMO, 2ʹ-fucosyllactose () and 6ʹ-sialyllactose (), exert anti-inflammatory effects; however, the associations between
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Microbiological, physicochemical and sensory changes throughout ripening of an experimental soft smear-ripened cheese in relation to salt concentrations J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Marie-Noëlle Leclercq-Perlat, Anne Saint-Eve, Daniel Picque, Ioan-Cristian Trelea
To evaluate the sodium chloride content effect on microbiological, biochemical, physicochemical and sensorial characteristics, Munster cheeses were prepared from pasteurized milk seeded with 3 yeasts (, , ) and 5 ripening bacteria (, , , , and ). Experiments were performed under 1.0%, 1.7% and 2.4% NaCl levels in cheese in triplicate. Ripening (d2 – d27) was carried under 12°C and 96% RH. These kinetics
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Genetic parameter estimates for methane emission during lactation from breath and potential inaccuracies in reliabilities assuming a repeatability versus random regression model J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 A.E. van Breukelen, R.F. Veerkamp, Y. de Haas, M.N. Aldridge
Methane (CH) emissions will be added to many national ruminant breeding programs in the coming years. Little is known about the covariance structure of CH traits over a lactation, which is important for optimizing recording strategies and to establish optimal genetic evaluation models. Our aim was to study CH over a lactation using random regression (RR) models, and to compare the accuracy to a fixed
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Effects on mineral status and milking performance of feeding difructose anhydride to transition cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Miguel Escartín, Núria Rialp, Alex Bach
The objective of this study was to assess the potential effect of difructose anhydride III (DFAIII) on calcemia, magnesemia, and milking performance of dairy cows. Sixty-six multiparous Holstein cows in late pregnancy (gestation days = 253.8 ± 2.13 d) were blocked according to their expected calving date and randomly assigned to either receiving no supplementation (Control) or receiving 40 g/d of DFAIII
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A meta-analysis of the relationship between milk protein production and absorbed amino acids and digested energy in dairy cattle. J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 M.D. Hanigan, V.C. Souza, R. Martineau, H. Lapierre, X. Feng, V.L. Daley
Milk protein production is the largest draw on AA supplies for lactating dairy cattle. Prior NRC predictions of milk protein production have been absorbed protein (MP)-based and utilized a first-limiting nutrient concept to integrate the effects of energy and protein, which yielded poor accuracy and precision (root mean squared error (RMSE) > 21%). Using a meta-data set gathered, various alternative
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Evaluation of the Protective Bioactivity and Molecular Mechanism Verification of Lactoferrin in an Alzheimer's Mouse Model with Ulcerative Enteritis J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Longyi Ran, Jiarui Shi, Yinan Lin, Chenlin Xu, Zhengkun Han, Sen Tian, Xiaoyang Qin, Qinjin Li, Taiyu Zhang, Huiying Li, Yu Zhang
The development of new drug therapies for Alzheimer's disease (AD) is an important research topic today, but the pathogenesis of AD has not been thoroughly studied, and there are still several shortcomings in existing drug therapies. Therefore, this study aims to explore the molecular mechanism of lactoferrin in the treatments of AD and ulcerative colitis (UC) which are susceptible to AD, starting
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A living lab approach to understanding dairy farmers' needs of technologies and data to improve herd health: Focus groups from 6 European countries J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 C. Doidge, L.M. Ånestad, A. Burrell, J. Frössling, L. Palczynski, B. Pardon, A. Veldhuis, J. Bokma, L.P. Carmo, P. Hopp, M. Guelbenzu-Gonzalo, N.V. Meunier, A. Ordell, I. Santman-Berends, G. van Schaik, J. Kaler
For successful development and adoption of technology on dairy farms, farmers need to be included in the innovation process. However, the design of agricultural technologies usually takes a top-down approach with little involvement of end-users at the early stages. Living Labs offer a methodology that involve end-users throughout the development process and emphasize the importance of understanding
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Alginate/whey protein isolate-based emulgel as an alternative margarine replacer in processed cheese: Impact on rheological, mechanical, nutritional, and sensory characteristics J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Mahdieh Zare, Mohammad-Taghi Golmakani, Mehrdad Niakousari, Mohammad Hadi Eskandari, Fatemeh Ghiasi, Seyed Mohammad Hashem Hosseini
Effects of partial or full replacement of margarine by alginate/whey protein isolate-based olive oil emulgel (E) on nutritional, physicochemical, mechanical, and rheological properties of processed cheese (PC) were investigated in this work. All formulated samples had the same amount of total fat, dry matter, and pH. According to the results of the fatty acids profile, the processed cheese sample in
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Signatures of positive selection after the introduction of genomic selection in the Finnish Ayrshire population J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Katri Sarviaho, Pekka Uimari, Katja Martikainen
The Finnish Ayrshire () belongs to the Nordic Red breeds and is characterized by high milk yield, high milk components, good fertility, and functional conformation. The FAY breeding program is based on genomic selection. Despite the benefits of selection on breeding values, autozygosity in the genome may increase due to selection, and increased autozygosity may cause inbreeding depression in selected
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MECHANISMS BY WHICH FEEDING SYNTHETIC ZEOLITE A AND DIETARY CATION ANION DIFFERENCE DIETS IMPACT FEED INTAKE, ENERGY METABOLISM, AND MILK PERFORMANCE: PART II. J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 W.S. Frizzarini, J.P. Campolina, A.L. Vang, L.R. Lewandowski, N.N. Teixeira, M.K. Connelly, P.L.J. Monteiro, L.L. Hernandez
The objectives of this study were to assess the effects of feeding 2 different diets, a low dietary cation-anion difference () or a diet with synthetic zeolite A to multiparous Holstein cows during the close-up period on DMI and energy metabolism, as well as evaluate colostrum and milk production. A hundred and 21 multiparous Holstein cows, blocked by lactation number and expected parturition date
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MECHANISMS BY WHICH FEEDING SYNTHETIC ZEOLITE A AND DIETARY CATION ANION DIFFERENCE DIETS IMPACT MINERAL METABOLISM IN MULTIPAROUS HOLSTEIN COWS: PART I J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 W.S. Frizzarini, P.L.J. Monteiro, J.P. Campolina, A.L. Vang, Olivia Soudah, L.R. Lewandowski, Meghan K. Connelly, S.I. Arriola Apelo, L.L. Hernandez
The periparturient period is characterized by the increased demand for calcium () in dairy cows. This has resulted in the utilization of several different prepartal nutritional strategies to prevent hypocalcemia postpartum. The objective of our study was to determine the effects of feeding synthetic zeolite A (), a negative dietary cation-anion difference () diet, or a positive DCAD diet () during
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Genomic inbreeding coefficients using imputation genotypes: assessing the effect of ancestral genotyping in Holstein-Friesian dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Christos Dadousis, Michela Ablondi, Claudio Cipolat-Gotet, Jan-Thijs van Kaam, Raffaella Finocchiaro, Maurizio Marusi, Martino Cassandro, Alberto Sabbioni, Andrea Summer
The objective of this study was to assess the effect of using or not the genotypes of the parents of a cow for imputing single nucleotide polymorphisms (SNP), on the estimation of genomic inbreeding coefficients of cows. Imputation (i.e., genotyped plus imputed) genotypes from 68,127 Italian Holstein dairy cows registered in the Italian National Association of Holstein, Brown and Jersey Breeders (ANAFIBJ)
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Ontario dairy producers' and veterinarians' perspectives: barriers to biosecurity implementation J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 G.M. Power, D.L. Renaud, C. Miltenburg, K.L. Spence, B.N.M. Hagen, C.B. Winder
Implementing biosecurity protocols is necessary to reduce the spread of disease on dairy farms. In Ontario, biosecurity implementation is variable among farms and barriers to biosecurity are unknown. Thirty-five semi-structured interviews were conducted between July 2022 and January 2023 with dairy producers (n = 17) and veterinarians (n = 18). Participants also completed a demographic survey. Thematic
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Effects of feeding whole-cracked rapeseeds, nitrate, and 3-nitrooxypropanol on composition and functional properties of the milk fat fraction from Danish Holstein cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Gayani M.S. Lokuge, C. Kaysen, M. Maigaard, P. Lund, L. Wiking, N.A. Poulsen
The aim of this study was to determine the individual and combined effects of supplementing fat (FAT), nitrate (NITRATE) and 3-nitrooxypropanol (3-NOP) on compositional and functional properties of milk fat. An 8 × 8 incomplete Latin square design was conducted with 48 lactating Danish Holstein cows over 6 periods of 21 d each. Eight diets were 2 × 2 × 2 factorially arranged: FAT (30 or 63 g crude
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Can a gradual weaning and separation process reduce weaning distress in dam-reared dairy calves? A comparison with the two-step method. J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-14 Anina Vogt, Kerstin Barth, Susanne Waiblinger, Uta König von Borstel
The weaning and separation phase remains one of the biggest challenges for cow-calf-contact systems, but a gradual process that better mimics the naturally occurring reduction in milk intake has not yet been scientifically investigated. Therefore, the aim of our study was to compare behavioral and physiological indicators of distress in 3 mo-old dam-reared dairy calves (with previous full-time cow-calf
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An integrated approach to explore the microbial biodiversity of natural milk cultures for cheesemaking J. Dairy Sci. (IF 3.5) Pub Date : 2024-03-08 Anna Rossi, Fabio Marroni, Niccolò Renoldi, Giulia Di Filippo, Elisabetta Gover, Marilena Marino, Nadia Innocente
The use of natural milk culture (NMC) represents a key factor in PDO Montasio cheeses, contributing to its distinctive sensory profile. The complex microbial ecosystem of NMCs is the result of heat treatment and incubation conditions, which can vary considerably among different production plants. In this study, the microbiota of NMCs collected from 10 PDO Montasio cheese dairies was investigated employing
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Long-term effects of 3-nitrooxypropanol on methane emission and milk production characteristics in Holstein Friesian dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Sanne van Gastelen, Eline E.A. Burgers, Jan Dijkstra, Rudi de Mol, Wouter Muizelaar, Nicola Walker, André Bannink
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Bacteriocins against biogenic amine-accumulating lactic acid bacteria in cheese: nisin A shows the broadest antimicrobial spectrum and prevents the formation of biofilms J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Luis Alberto Villarreal, Victor Ladero, Agustina Sarquis, Beatriz Martinez, Beatriz del Rio, Miguel A. Alvarez
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A dynamic individual yak heifer live body weight estimation method using the YOLOv8 network and body parameter detection algorithm J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Yingqi Peng, Zhaoyuan Peng, Huawei Zou, Meiqi Liu, Rui Hu, Jianxin Xiao, Haocheng Liao, Yuxiang Yang, Lushun Huo, Zhisheng Wang
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The ability of a handheld near-infrared spectrometer for a rapid quality assessment of bovine colostrum including the Ig G concentration J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Arianna Goi, Angela Costa, Massimo De Marchi
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Apparent prevalence of hemotropic mycoplasma in dairy calves and replacement heifers on Michigan farms J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 L. de Souza Ferreira, S. Bolin, A. Abuelo, B. Norby, P.L. Ruegg
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Effects of a multistrain Bacillus-based direct-fed microbial on gastrointestinal permeability and biomarkers of inflammation during and following feed restriction in mid-lactation Holstein cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 B.M. Goetz, M.A. Abeyta, S. Rodriguez-Jimenez, J. Opgenorth, J.L. McGill, S.R. Fensterseifer, R.P. Arias, A.M. Lange, E.A. Galbraith, L.H. Baumgard
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Effects of feeding rumen-protected lysine during the postpartum period on performance and amino acids profile in dairy cows: A meta-analysis J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 U. Arshad, F. Peñagaricano, H.M. White
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Effect of dietary phosphorus deprivation during the dry period on the liver transcriptome of high yielding periparturient dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Robert Ringseis, Sophia Wächter, Imke Cohrs, Klaus Eder, Walter Grünberg
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Graduate Student Literature Review: Social and feeding behavior of group-housed dairy calves in automated milk feeding systems J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Maria E. Montes, Jacquelyn P. Boerman
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Role of diacylglycerol O-acyltransferase 1 (DGAT1) in lipolysis and autophagy of adipose tissue from ketotic dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Qiushi Xu, Yunhui Fan, John Mauck, Juan J. Loor, Xudong Sun, Hongdou Jia, Xinwei Li, Chuang Xu
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Recording Antimicrobial Use on Irish Dairy Farms: Barriers & Facilitators to Using Technology and Sharing Data J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Hannah Martin, Laura Gribben, Áine Regan, Edgar Garcia Manzanilla, Conor G. McAloon, Alison MG Burrell
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The HSP90AA1 Gene Is Involved in Heat Stress Responses and Its Functional Genetic Polymorphism Are Associated with Heat Tolerance in Holstein Cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Lirong Hu, Hao Fang, Zaheer Abbas, Hanpeng Luo, Luiz F. Brito, Yachun Wang, Qing Xu
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Replacing soybean meal with microalgae biomass in diets with contrasting carbohydrate profile can reduce in vitro methane production and improve short-chain fatty acids production J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 R.R. Lobo, E. Almeida, A. Monteiro, S.S. Silva, G. Salas-Solis, C.J. Coronella, S.R. Hiibel, A.P. Faciola
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Machine learning methods for genomic prediction of cow behavioral traits measured by automatic milking systems in North American Holstein cattle J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 Victor B. Pedrosa, Shi-Yi Chen, Leonardo S. Gloria, Jarrod S. Doucette, Jacquelyn P. Boerman, Guilherme J.M. Rosa, Luiz F. Brito
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Effects of saturated fatty acids with lysophospholipids on production and nutrient digestibility in lactating cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-22 N.H. Porter, K.L. Clark, L.R. Rebelo, J.E. Copelin, I.H. Kwon, C. Lee
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Feeding a Saccharomyces cerevisiae fermentation product during a gut barrier challenge in lactating Holstein cows impacts the ruminal microbiota and metabolome J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-17 Qianming Jiang, Danielle N. Sherlock, Ahmed A. Elolimy, Ilkyu Yoon, Juan J. Loor
Through its influence on the gut microbiota, feeding of fermentation products (SCFP) has been a successful strategy to enhance the health of dairy cows during periods of physiological stresses. Although production and metabolic outcomes from feeding SCFP are well-known, combined impacts on the ruminal microbiota and metabolome during gut barrier challenges remain unclear. To address this gap in knowledge
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Milk production of cows grazing pasture supplemented with grain mixes containing canola meal or corn grain or both over the first 100 days of lactation J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-07 M.M. Wright, M.L. Douglas, C.K.M. Ho, L.C. Marett, M.J. Auldist, G.L. Morris, M.C. Hannah, K. Giri, W.J. Wales, V.M. Russo
Grain mixes varying in proportions of wheat grain, barley grain, canola meal and corn grain were fed to grazing dairy cows in early lactation to determine the contribution of canola meal and corn grain to milk yield, body weight (BW), body condition score (BCS), eating behavior and blood serum metabolite concentrations. The experiment used 80 multiparous, seasonally calving Holstein-Friesian dairy
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Etiology and epidemiology of digital dermatitis in Australian dairy herds J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-07 Andrew McPherson, Bill Tranter, Ash Phipps, Richard Laven, John House, Ruth N. Zadoks, Sam Rowe
Bovine digital dermatitis (BDD) is an important cause of lameness in dairy cows worldwide. However, there is very little known about this disease in Australian herds, which are predominantly managed on pasture. The primary objectives of this cross-sectional study were to describe the presence and prevalence of BDD in Australian dairy herds and to characterize the microbiota of healthy skin and M4 lesions
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Effect of jujube pulp on acid- and rennet-induced coagulation properties of milk J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-07 Fang Wang, Wanning Fan, Guoying Qi, Huan Liu, Xiuli Ma, Xuemei Sun, Junke Li, Hansheng Gong
Milk coagulation is an important step in the production of fermented dairy products such as yogurt and cheese. Jujube is gaining popularity and acceptance as a food ingredient. In China, jujube yogurt is popular among consumers. However, there is limited information on the effect of jujube on acid- and rennet-induced coagulation properties of milk. The objective of this study was to evaluate the effects
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Comparative Transcriptomic Analysis of the Flavor Production Mechanism in Yogurt by Traditional Starter Strains J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-07 H.X. Tian, N.W. Huang, W.Q. Yao, H.Y. Yu, B.J. Yu, X. Chen, C. Chen
Synergistic fermentation of milk by and ssp. is one of the key factors that determines the quality of yogurt. In this study, the mechanism whereby yogurt flavor compounds are produced by mixture of SIT-20.S and ssp. SIT-17.B were investigated by examining these strains' flavor production, growth, and gene transcription. The results showed that yogurt produced by a 10:1 mixture of the aforementioned
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Data driven prediction of dairy cattle lifetime production and its use as a guideline to select surplus youngstock J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-07 Maarten Perneel, Stefaan De Smet, Jan Verwaeren
The lifetime production of dairy cows is a complex trait influenced not only by genetics, but also by the environment in which a cow lives and the management practices of the farmer. Moreover, these influential factors show complex interactions with each other, making it difficult to reliably predict the lifetime production of individual animals at birth. However, since well managed dairy farms often
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Resilience Indicator Traits in three Dairy Cattle breeds in Baden-Württemberg J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 F. Keßler, R. Wellmann, M.G.G. Chagunda, J. Bennewitz
In recent years, research in animal breeding has increasingly focused on the topic of resilience, which is expected to continue in the future due to the need for high-yielding, healthy, and robust animals. In this context, an established approach is the calculation of resilience indicator traits with time series analyses. Examples are the variance and autocorrelation of daily milk yield in dairy cows
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Quantification of the effect of in-utero events on lifetime resilience in dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Kate Lewis, Laura Shewbridge Carter, Andrew Bradley, Richard Dewhurst, Niamh Forde, Robert Hyde, Jasmeet Kaler, Margaret D. March, Colin Mason, Luke O'Grady, Sam Strain, Jake Thompson, Martin Green
Currently, the dairy industry is facing many challenges that could affect its sustainability, including climate change and public perception of the industry. As a result, interest is increasing in the concept of identifying resilient animals, those with a long productive lifespan, good reproductive performance and milk yield. There is much evidence that events in utero, i.e., the Developmental Origins
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Supramolecular self-assembly strategies of natural-based β-lactoglobulin modulating bitter perception of goat milk-derived bioactive peptides J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Rong Zhang, Wei Jia
Complete self-assembly and reassembly behavior of bitter peptide-protein necessitates multilevel theories that encompass phenomena ranging from the self-assembly of recombinant complex to atomic trajectories. An extension to the level of mechanism method was put forth, involves limited enzymatic digestion and bottom-up proteomics to dissect inherent heterogeneity within β-lactoglobulin and β-lactoglobulin-PPGLPDKY
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Perceptions of biosecurity in a Canadian dairy context J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 G.M. Power, D.L. Renaud, C. Miltenburg, K.L. Spence, B.N.M. Hagen, C.B. Winder
The objective of this review was to outline current implementation of biosecurity, the impact of biosecurity on the industry, and producers' and veterinarians' perceptions of biosecurity with a focus on the Canadian dairy industry. Biosecurity is an important aspect of farm safety by reducing the spread of pathogens and contaminants, improving animal health and production, and maintaining human safety
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Estimates of genetic parameters for rumination time, feed efficiency, and methane production traits in first lactation Holstein cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 L.S.F. Lopes, F.S. Schenkel, K. Houlahan, C.M. Rochus, G.A. Oliveira, H.R. Oliveira, F. Miglior, L.M. Alcantara, D. Tulpan, C.F. Baes
The large-scale recording of traits such as feed efficiency and methane emissions for use in genetic improvement programs is complex, costly, and time-consuming. Therefore, heritable traits that can be continuously recorded in dairy herds and are correlated to feed efficiency and methane emission traits could provide useful information for genetic evaluation. Rumination time has been suggested to be
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How much can performance measures explain of the between-cow variation in enteric methane? J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Giulio Giagnoni, Nicolas C. Friggens, Marianne Johansen, Morten Maigaard, Wenji Wang, Peter Lund, Martin R. Weisbjerg
Enteric CH produced from dairy cows contributes to the greenhouse gas emission from anthropogenic sources. Recent studies have shown that the selection of lower CH emitting cows is possible, but this would be simpler if performance measures already recorded on farm could be used, instead of measuring gas emission from individual cows. These performance measures could be used for selection of low emitting
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Investigating nutritional strategies during a rest period to improve health, growth, and behavioral outcomes of transported surplus dairy calves J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 A. Bajus, K.C. Creutzinger, M.C. Cantor, J.N. Wilms, D.E. Gomez, M.A. Steele, D.F. Kelton, D.L. Renaud
The objective of this study was to investigate the effects of feeding surplus dairy calves a milk replacer (MR) or one of 2 different oral rehydration solutions (ORS) during a mid-transportation rest period on metabolic and clinical health indicators, growth, and behavioral outcomes after arrival to a calf-raising facility. Surplus dairy calves (n = 128) were transported in 4 cohorts from February
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Performance comparison of machine learning models used for predicting subclinical mastitis in dairy cows: bagging, boosting, stacking and super-learner ensembles versus single machine learning models J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 A. Satoła, K. Satoła
Mastitis has a substantial impact on the dairy industry across the world, causing dairy producers to suffer losses due to the reduced quality and quantity of produced milk. A further problem, related to this issue, is the excessive use of antibiotics that leads to the development of resistance in different bacterial strains. The growing consumer awareness oriented toward food safety and rational use
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Modelling missing pedigree with metafounders and validating single-step genomic predictions in a small dairy cattle population with a great influence of foreign genetics J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 R.D. López-Correa, A. Legarra, I. Aguilar
Genetic improvement in small countries rely heavily on foreign genetics. In an importing country such as Uruguay, consideration of unknown parent groups (UPG) for foreign sires is essential. However, the use of UPG in genomic model evaluations may lead to bias in genomic estimated breeding values. The objective of this study was to study different models including UPG or Metafounders (MF) in the Uruguayan
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Application of behavior data to predictive exploratory models of metritis self-cure and treatment failure in dairy cows J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Jessica G. Prim, Segundo Casaro, Ahmadreza Mirzaei, Tomas D. Gonzalez, Eduardo B. de Oliveira, Anderson Veronese, Ricardo C. Chebel, J.E.P. Santos, K.C. Jeong, F.S. Lima, Paulo R. Menta, Vinicius S. Machado, Klibs N. Galvão
The objective was to evaluate the performance of exploratory models containing routinely available on-farm data, behavior data, and the combination of both to predict metritis self-cure (SC) and treatment failure (TF). Holstein cows (n = 1,061) were fitted with a collar-mounted automated- health monitoring device (AHMD) from −21 ± 3 to 60 ± 3 d relative to calving to monitor rumination and activity
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Impact of inbreeding on production, fertility, and health traits in German Holstein dairy cattle utilizing various inbreeding estimators J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Julius Mugambe, Rana Ahmed, Georg Thaller, Christin Schmidtmann
In dairy cattle production, it is important to understand how inbreeding affects production, fertility, and health traits. However, there is still limited use of genomic information to estimate inbreeding, despite advancements in genotyping technologies. To address this gap, we investigated the impact of inbreeding on German Holstein dairy cattle using both pedigree-based and genomic-based inbreeding
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Replacing conventional concentrates with sprouted barley or wheat: Effects on lactational performance, nutrient digestibility, and milk fatty acid profile in dairy cows. J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 Yu Zang, Andrew T. Richards, Nirosh Seneviratne, Fabian Andres Gutierrez Oviedo, Rob Harding, Sanjeewa Ranathunga, Joseph W. McFadden
Finite natural resources, rising human population, and climate change pose challenges to traditional crop production. Hydroponically grown fodder (i.e., sprouted grains) can be an alternative feed source for dairy cows; however, only sprouted barley has been investigated in low-producing cows. We aimed to evaluate the impact of replacing conventional concentrates with sprouted barley or wheat, grown
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How does a beef x dairy calving affect the dairy cow's following lactation? J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 R. E. Espinola Alfonso, W.F. Fikse, M.P.L. Calus, E. Strandberg
For beef semen usage on dairy cows, much of the research has focused on the performance of the crossbred calves, yet little focus has been given to the subsequent performance of the cow herself. This study aimed to evaluate the performance of dairy cows for milk yield, fertility, and survival traits after giving birth to beef x dairy crossbred calves and compare this with the performance after giving
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Farm-level nutritional factors associated with milk production and milking behavior on Canadian farms with automated milking systems J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 B.J. Van Soest, R.D. Matson, D.E. Santschi, T.F. Duffield, M.A. Steele, K. Orsel, E.A. Pajor, G.B. Penner, T. Mutsvangwa, T.J. DeVries
The objective of this study was to describe nutritional strategies utilized on Canadian dairy farms with automated milking systems (AMS), both at the feed bunk and the concentrate offered at the AMS, as well as to determine what dietary components and nutrients, as formulated, were associated with milk production and milking behaviors on those farms. Formulated diets, including ingredients and nutrient
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Inheritance of genomic regions and genes associated with number of oocytes and embryos in Gir cattle through daughter design J. Dairy Sci. (IF 3.5) Pub Date : 2024-02-02 R.F.B. Rocha, A.O. Garcia, M.G. dos Santos, P.I. Otto, M.V.B. da Silva, M.F. Martins, M.A. Machado, J.C.C. Panetto, M.P.L. Calus, S.E.F. Guimarães
Over the past decades, daughter designs, including genotyped sires and their genotyped daughters, have been used as an approach to identify quantitative trait loci (QTL) related with economic traits. The aim of this study was to identify genomic regions inherited by Gir sire families and genes associated with number of viable oocytes (VO), total number of oocytes (TO) and number of embryos (EMBR) based