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Assessing teat canal morphology in the dry period and during lactation by high-resolution ultrasound J. Dairy Res. (IF 2.1) Pub Date : 2024-03-18 Micheline Berteau, P. Theo Pepler, Ann Broadhurst, Gawain Hammond, Ruth N. Zadoks, Lorenzo Viora
Our objectives were to quantify the dimensions of a fully ‘closed’ teat canal in dry cows and to describe recovery of the teat canal between milkings in lactating cows to assess whether and when full closure is attained, since this is an important determinant of udder health. Using an ultrasound scanner, teat canal length and diameter (proximal, midpoint and distal), teat cistern width, teat end width
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Fermentation of whey-derived matrices by Kluyveromyces marxianus: alcoholic beverage development from whey and fruit juice mixes J. Dairy Res. (IF 2.1) Pub Date : 2024-03-18 Gabriel A. Gómez, Facundo Cuffia, Orlando G. Nagel, Rafael L. Althaus, Roberto J. Ceruti
This research paper addresses the hypotheses that Kluyveromyces marxianus can be cultured with good alcohol production on different whey-derived matrices, and that the fermented product can be used in order to develop alcoholic beverages with acceptable sensory characteristics by mixtures with yeast-fermented fruit-based matrices. Growth and fermentative characteristics of Kluyveromyces marxianus LFIQK1
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Laboratory evaluation of a rapid diagnostic test for dairy mastitis J. Dairy Res. (IF 2.1) Pub Date : 2024-03-18 David C. Speksnijder, Hendrika C. Verduijn, Sharon van Haren, Tomas Ussing, Tine van Werven
Rapid diagnostic tests that differentiate between Gram positive, Gram negative and the absence of aerobic bacteria in milk samples from dairy cows with clinical mastitis can support antimicrobial treatment decisions and contribute to a more prudent use of antimicrobials in the dairy industry. The objective of this study was to evaluate the test characteristics of the novel rapid BACT mastitis test
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Effect of shortening the dry period on colostrum and milk quality, blood parameters and some reproductive parameters in high-producing Holstein cows of different body condition score J. Dairy Res. (IF 2.1) Pub Date : 2024-02-29 Nazanin Javani Javani, Ahmad Riasi, Esmaeil Montazeri, Saeid Ansari Mahyari, Mohammad Choupani
This study aimed to evaluate the effect of shortening the dry period in high-yielding cows of different body condition scores (BCS). We report colostrum and milk quality, some serum metabolites, BCS changes, and some reproductive parameters with measurements being made over the first two months of lactation. Cows were grouped based on the length of the dry period (normal: about 50 d and short: about
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Age at first calving and productive performance of primiparous Holsteins J. Dairy Res. (IF 2.1) Pub Date : 2024-02-29 Rafael Ceolim Braganholo, Ferenc Istvan Bánkuti, Fabio Seiji dos Santos, Victor Breno Pedrosa, Maximiliane Alavarse Zambom, Altair Antônio Valloto, Geraldo Tadeu dos Santos
This study investigated the age at first calving in Holstein heifers and its impact on various production parameters. A sample of 737 Holstein heifers born between 2015 and 2018 and finishing their first lactations between 2018 and 2020 was included. Cluster analysis revealed three groups based on age at first calving: high precocity, medium precocity and low precocity. Medium-precocity group exhibited
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Ozone use in the treatment of subclinical mastitis in dairy cows J. Dairy Res. (IF 2.1) Pub Date : 2024-02-29 Esther Abihail Fuentes, Jamile A. Achy, Davi F. da Silva, Amanda C. G. Graboschii, Juliana de O. Bernardo, Jean G. Joaquim, Angelina B. Fraga, Pierre B. Escodro
This research communication paper addresses the hypothesis that the use of therapeutic alternatives for mastitis, such as intramammary ozone, can cure the disease with lower costs and without harmful residues for human consumption and without formation of microbial resistance like the ones caused by indiscriminate use of antibiotics in dairy farms. The study was performed in 36 mammary quarters from
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Milk proteomic analysis reveals differentially expressed proteins in high-yielding and low-yielding Guanzhong dairy goats at peak lactation J. Dairy Res. (IF 2.1) Pub Date : 2024-02-28 Yingxin Qu, Lu Chen, Xinyang Ren, Akang Shari, Yuxin Yuan, Mengqi Yu, Haoqi Xiao, Guang Li
The aim of this experiment was to investigate the differential proteomic characteristics of milk from high- and low-yielding Guanzhong dairy goats during the peak lactation period under the same feeding conditions. Nine Guanzhong dairy goats with high yield (H: 3.5 ± 0.17 kg/d) and nine with low yield (L:1.2 ± 0.25 kg/d) were selected for milk proteomic analysis using tandem mass tag technology. A
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Impact of parity number, milk production and somatic cell count on the reproduction of Holstein cows J. Dairy Res. (IF 2.1) Pub Date : 2024-02-27 Bianca Letícia Barbosa, Victor Breno Pedrosa, Luciana da Silva Leal Karolewski, Caio César de Godoi, Adriana de souza Martin
This research communication describes the reproductive and productive parameters and somatic cell count (SCC) of primiparous and multiparous cows from specialized dairy Holstein herds in South region of Brazil, and correlates these parameters using test-day records. A total of 24 011 records of animals from 75 producers obtained between 2017 and 2018 were used. The variables analyzed included milk
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Characterization of variables related to high stability of raw cow milk J. Dairy Res. (IF 2.1) Pub Date : 2024-02-19 Fernanda Antunes Martins, Marina Tolentino Marinho, Vivian Fischer, João Ricardo Alves Pereira, Paulo Ricardo Los, Adriana de Souza Martins
This research paper analyzes the stability of raw cow milk in the alcohol test and seeks to understand to know the factors that influence milk stability and the occurrence of unstable non-acid milk. Milk samples were collected from the cooling tanks of rural farmers in the state of Paraná twice in summer and twice in winter. The farms were classified according to the production system: pasture with
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Concentrations of antimicrobial components in milk at dry off and postpartum and their relationships to new high somatic cell counts at quarter level in dairy cows J. Dairy Res. (IF 2.1) Pub Date : 2024-02-16 Naoki Suzuki, Rika Harada, Yusaku Tsugami, Takahiro Nii, Naoki Isobe
We investigated the antimicrobial components in cow milk at dry off and postpartum and their contribution in preventing new high SCC at quarter level. Milk samples from 72 quarters of 19 lactating cows were collected at last milking before dry off and at 7 d after parturition. Milk yield of each cow was recorded and SCC, IgG, IgA, lactoferrin, lingual antimicrobial peptide (LAP), and S100A7 concentrations
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Functional properties of cream and butter oil from milk of Holstein cows abomasally infused with increasing amounts of high-oleic sunflower fatty acids J. Dairy Res. (IF 2.1) Pub Date : 2024-02-16 Gerardo Ortiz Gonzalez, Edward G. Perkins, Shelly J. Schmidt, James K. Drackley
This research paper addresses the hypothesis that there is an optimal amount of intestinally available oleic acid (provided via abomasal infusion) to produce higher-oleic acid milk fat with satisfactory functional characteristics of cream and butter oil. A control and four increasing doses of free fatty acids from high oleic sunflower oil (HOSFA) were infused into the abomasum of four lactating dairy
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Intramammary treatment of clinical mastitis quarters with ceftiofur does not cause anbiotic residues in adjacent untreated quarters J. Dairy Res. (IF 2.1) Pub Date : 2024-02-16 André Luis Mendes Azevedo Carvalho, José da Páscoa Nascimento Neto, Túlio Bastos Tomaz Carvalho, Hélio Rezende Lima Neto, Rafael Morgado Victali, Luthesco Haddad Lima Chalfun
The study was carried out in dairy cows to elucidate whether treatment of clinical mastitis quarters with Spectramast® LC (ceftiofur hydrochloride, 125 mg, Zoetis) created a reason for discarding milk from adjacent untreated healthy quarters. The antibiotic was infused once daily in the affected mammary quarter for four days. Forty-nine cows were evaluated after diagnosis of clinical mastitis in three
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Milk fat globule membrane: formation and transformation J. Dairy Res. (IF 2.1) Pub Date : 2024-01-16 F. B. Peter Wooding, Masanao Kinoshita
The milk fat globule membrane (MFGM) is formed by complex cell biological processes in the lactating mammary epithelial cell which result in the release of the milk fat globule (MFG) into the secretory alveolus. The MFG is bounded by a continuous unit membrane (UM), separated from the MFG lipid by a thin layer of cytoplasm. This unique apocrine secretion process has been shown in all of the mammary
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Incomplete milking before drying off does not impair the udder health of cows infected with minor pathogens J. Dairy Res. (IF 2.1) Pub Date : 2024-01-15 Ute Müller, Lisett Marie Hefter, Sophia Dorothea Wedeking, Wolfgang Büscher, Kerstin Barth
When implementing the transition from regular milk production to the dry period, drying off is mostly conducted simply by abrupt cessation of milking. Efforts to reduce milk synthesis before cessation of milking aim to reduce stress in cows as well as to lower the risk of mastitis. A previous study demonstrated that incomplete milking during the last ten days of lactation gradually reduced the milk
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The effect of diet restriction on raw milk stability: a meta-analytical approach J. Dairy Res. (IF 2.1) Pub Date : 2024-01-12 Lisiane da Silveira Garcia, Arthur Fernandes Bettencourt, Júlia Fernandes Aires, Ines Andretta, Vivian Fischer
This research communication was designed to evaluate the effects of different levels of diet restriction on the composition and ethanol stability (MES) of raw bovine milk. This research was carried out using three electronic databases: Scopus, Pubmed and Web of Science. The main inclusion criteria were: (i) original research, (ii) use of alcohol (ethanol) test as a method to assess milk stability,
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Genetic aspects of Wood's lactation curve parameters in Jersey crossbred cattle using Bayesian approach J. Dairy Res. (IF 2.1) Pub Date : 2024-01-12 Mokidur Rahman, Hasan Baneh, Indrajit Gayari, Muthupalani Karunakaran, Thiruvothur Venkatesan Raja, Sitangsu Mohan Deb, Ajoy Mandal
The study was undertaken to estimate the genetic parameters of lactation curve parameters of Wood's function in Jersey crossbred cattle using the Bayesian approach. Data on 33,906 fortnightly test day milk yields of 1,718 lactation records of Jersey crossbred cows, maintained at the ICAR-National Dairy Research Institute in West Bengal, were collected over a period of 40 years. The lactation curve
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Lactoferrin in breast milk-based powders J. Dairy Res. (IF 2.1) Pub Date : 2024-01-12 Efstathia Tsakali, Rakesh Aggarwal, Dimitra Houhoula, Spiridon Konteles, Athimia Batrinou, Davy Verheyen, Jan FM Van Impe, Arhontoula Chatzilazarou
This study aimed to determine lactoferrin (LF) in breast milk-based powders and formulas. Lactoferrin is an important whey protein in all mammalian milks and is responsible in large part for the known antimicrobial effects of human milk in particular. As breast feeding is not always possible, formulas based on cows milk have been developed in order to meet the nutritional needs of the newborn, while
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Evaluating the impact of sprinkler cycle and flow rate on dairy buffalo performance during heat stress J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Syed I. Hussain, Nisar Ahmad, Saeed Ahmad, Maqsood Akhter, Muhammad Q. Shahid
The aim of this study was to evaluate the effect of the sprinkler cycle and flow rate on physiological, behavioural, and productive responses in dairy buffaloes. Nine Nili Ravi lactating buffaloes were subjected to three sprinkler cycles and two flow rates using a double replicated 3 × 3 Latin square design. The flow rates were 1.25 and 2 l/min, and the sprinkler cycles (minutes water on/off, number
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In vitro evaluation of nanocomposites of linseed mucilage and k-carrageenan loaded with Achyrocline satureioides nanoemulsion: a gradual-release candidate of antimicrobials for the treatment of bovine mastitis J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Gabriela Tasso Pinheiro Machado, Roberto Gabriel Ferreira, Maria Beatriz Veleirinho, Luciana Aparecida Honorato, Roberta de Oliveira Ramos, Marcos Antônio Segatto Silva, Shirley Kuhnen
This research paper presents the development and evaluation of pioneering nanocomposites (NCs) based on the combination of k-carrageenan and linseed mucilage. When loaded with macela extract nanoemulsion they present an innovative approach for the sustained release of antimicrobial herbal constituents, specifically tailored for bovine mastitis treatment. The NCs, encompassing various ratios of k-carrageenan
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Lack of evidence for association between the leptin/Sau3AI gene and milk yield traits in Holstein Friesian dairy cattle J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Mustafa Kibar, İbrahim Aytekin
This study aimed to investigate the effect of leptin gene polymorphism and some environmental factors on milk production traits. Blood samples from 212 Holstein Friesian dairy cattle reared on a private farm were used. The intron 2 region of the leptin gene was digested with Sau3AI restriction enzyme using the PCR-RFLP method. A and B alleles and AA, AB, and BB genotype frequencies for the Sau3AI polymorphism
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Lactoferrin's potential application in enhancing yoghurt's microbial and sensory qualities, with emphasis on the starter culture activity J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Walaa G. Nadi, Eman M. Taher, Abeer Abdel Nasser Awad, Lamiaa Ibrahim Ahmed
This research paper aimed to examine the antibacterial activity of lactoferrin (LF) as a potential natural alternative in the dairy sector, by measuring its minimum inhibitory concentration (MIC) against a number of common food-borne pathogens as well as Pseudomonas aeruginosa, one of the major dairy product spoiling microorganisms. Additionally, a viability experiment was applied to laboratory-manufactured
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Phenotypic evaluation of mast cells in bovine mammary tissue and mastitis in the context of fibrosis J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Cansel Güzin Özgüden-Akkoc, Ayşe Meriç Mutlu, Abdülkadir Keskin, Ezgi Yumuşak, Ahmet Akkoc
This research paper addresses the hypothesis that mast cells (MCs) contribute to the formation of mammary fibrosis. MCs are important immune regulatory and immune modulatory cells that play major roles in the inflammatory process. Since there is no detailed knowledge, this research study aimed to comparatively investigate the presence, localization, and immunophenotypes of MCs in healthy and mastitic
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Right on the money? U.S. dairy farmers' varied understanding of consumer preferences and attitudes towards animal health, welfare and biotechnology J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Danielle J. Ufer, David L. Ortega
This Research Communication investigates how well U.S. dairy farmers understand the voting behaviour and willingness to pay of consumers for products with production traits relevant to animal health, welfare and biotechnology. Accurately understanding consumer behaviour is key to making sound production decisions and reducing risks. Comparing survey data with the literature shows that U.S. dairy farmers
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Zoonotic risks of pathogens from dairy cattle and their milk-borne transmission J. Dairy Res. (IF 2.1) Pub Date : 2024-01-08 Menno Holzhauer, Gerrit Jan Wennink
Dairy products are major sources of high-quality protein and bioavailable nutrients and dairy production contributes to local, regional and national-level economies. Consumption of raw milk and raw milk products does, however, carry a zoonotic risk, as does direct contact with cattle by farm husbandry staff and other employees. This review will mainly focus on the latter, and deal with it from the
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Comparative evaluation of A1A2 and A2A2 cow milk-containing diets on biochemical and histological parameters of Wistar rats J. Dairy Res. (IF 2.1) Pub Date : 2023-12-11 Ravindra Semwal, Ankit Kumar, Ruchi Badoni Semwal, Ashutosh Chauhan, Sunil Kumar Joshi, Kumud Upadhyaya, Monika Shodhi, Deepak Kumar Semwal
This Research Communication aims to compare the effect of A1A2 and A2A2 cow milk diets on the biochemical and histological parameters of rats. The rats were divided into four groups and fed with a normal diet, A2 milk powder, A1A2 or A2A2 cow milk diets for 90 d. Blood glucose, kidney function, liver function and lipid profile were examined during the experimental period. The study showed an increase
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Effects of high hydrostatic pressure on antimicrobial protein stability and the rheological and shelf-life properties of donkey milk J. Dairy Res. (IF 2.1) Pub Date : 2023-10-18 Alperen Koker, Sebnem Ozturkoglu-Budak, Hami Alpas
The effects of high hydrostatic pressure (HHP) and heat treatments on antimicrobial protein stability and on the physico-chemical, microbiological, rheological and shelf-life properties of donkey milk were investigated. Although heat treatment at 75°C for 2 min resulted in 1.50 log CFU ml−1 microbial inactivation, losses in activities of lysozyme (58%) and lactoferrin (82%) were observed due to whey
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Identification of lactic acid bacteria with anti-listeria activity. Characterization and application of a bacteriocinogenic strain in the control of Listeria monocytogenes in cheese J. Dairy Res. (IF 2.1) Pub Date : 2023-10-18 Fernanda Montanholi de Lira, Fernanda Yuri Rodrigues Tanaka, Edson Antônio Rios, Stael Málaga Carrilho, Samanta Stinghen de Abreu, Giulia Ferracin Ferreira, Natalia Gonzaga, Ulisses de Pádua Pereira, Ronaldo Tamanini, Rafael Fagnani, Vanerli Beloti
The purpose of the research paper was firstly to identify bacteriocin-producing lactic acid bacteria characterizing strains with anti-listeria activity and, secondly, to characterize bacteriocin evaluating its in vitro efficiency as a natural preservative and, thirdly, to evaluate the anti-listeria effect of the bacteriocinogenic strain of Lactiplantibacillus plantarum in cheeses and produce an edible
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The effect of homogenisation pressure on the microstructure of milk during evaporation and drying: particle-size distribution, electronic scanning microscopy, water activity and isotherm J. Dairy Res. (IF 2.1) Pub Date : 2023-10-09 Thiago Medeiros Zacaron, Júlia d'Almeida Francisquini, Ítalo Tuler Perrone, Rodrigo Stephani
Homogenisation is a widely used technique in manufacturing powdered milk with a direct impact on product solubility, and the homogenisation pressure is a central attribute of this process. We aimed to understand the effect of increasing homogenisation pressures (0/0, 15/5, and 75/5 MPa, 1st/2nd stages) on particle-size distribution during homogenised whole milk powder manufacture and rehydration of
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Do you see the pattern? Make the most of sensor data in dairy cows J. Dairy Res. (IF 2.1) Pub Date : 2023-10-02 Akke Kok, Emma Ternman, Vivi M. Thorup
Sensors are increasingly being used to monitor animal behaviour. Data handling methods have, however, lagged behind the continuous data stream to some extent, often being limited to summarizing data into daily averages at group level. This research reflection presents our opinion of the neglected application of 24-h pattern analysis. Recent studies of dairy cow behaviour have demonstrated that additional
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Farm management and economic factors associated with bulk tank total bacterial count in Holstein dairy herds in Iran J. Dairy Res. (IF 2.1) Pub Date : 2023-10-02 Fatemeh Soleimani-Rahimabad, Ali Sadeghi-Sefidmazgi, Abbas Pakdel, Rabie Rahbar, Jeffrey M. Bewley
The objectives of this research were (1) to study different factors affecting milk total bacterial count (TBC) and (2) to estimate the economic value associated with TBC in Holstein dairy herds in Iran. The relationships between bulk tank TBC and farm management and economic factors were examined on 56 randomly selected intensive dairy farms. Herd management factors associated with bulk tank TBC were
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The effect of slow-release milk replacer feeding on health and behaviour parameters in dairy breed calves J. Dairy Res. (IF 2.1) Pub Date : 2023-09-18 Lea Krump, Ríona G. Sayers, Katie Sugrue, Emer Kennedy, Jim O'Mahony, Gearóid P. Sayers
The aim of this research paper was to evaluate the effect of a slow-release milk replacer on health and behaviour of neonatal dairy calves. This was done with the potential benefits to welfare during transport in mind. A total of 15 calves were randomly divided into three groups of 5, namely, a control group fed twice in 24 h with 3 l of a conventional milk replacer, a slow-release group fed once in
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Skin carotenoid levels in lactating dairy cows as measured using multiple spatially resolved reflection spectroscopy J. Dairy Res. (IF 2.1) Pub Date : 2023-09-11 Martina Jakob, Joana Lima, Frederic Launay, Holly J. Ferguson
This research communication describes a pilot study measuring skin carotenoid levels of lactating dairy cows. Carotenoids are natural antioxidants, involved in cell communication and immune function, protecting against oxidative stress. They are precursors of vitamin A, important for reproduction efficiency, growth and male fertility. Therefore, easy-to-use, inexpensive methods to measure carotenoids
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Predicting dairy herd resilience on farms with conventional milking systems J. Dairy Res. (IF 2.1) Pub Date : 2023-09-11 Roxann S. C. Rikkers, Bart J. Ducro, Rianne van Binsbergen, Claudia Kamphuis
This research paper addresses the problem that, thus far, there is no method available to predict herd resilience for farms that do not use automated milking systems (AMS). Recently, a methodology was developed to estimate both individual cow as well as herd resilience using daily milk yield observations at individual cow level from farms with AMS. This AMS-based method, however, is not suitable on
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Supplementation with antioxidants and phenolic compounds in ruminant feeding and its effect on dairy products: a systematic review J. Dairy Res. (IF 2.1) Pub Date : 2023-09-01 Azalia Avila-Nava, Isabel Medina-Vera, Hugo Toledo-Alvarado, Luis Corona, Claudia C. Márquez-Mota
Milk and dairy products have great importance in human nutrition related to the presence of different nutrients, including protein, fatty acid profile and bioactive compounds. Dietary supplementation with foods containing these types of compounds may influence the chemical composition of milk and dairy products and hence, potentially, the consumer. Our objective was to summarize the evidence of the
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The effect of high-temperature heat treatment and homogenization on the microstructure of set yogurt curd networks J. Dairy Res. (IF 2.1) Pub Date : 2023-08-31 Takefumi Ichimura, Mai Kusaka, Taku Nakamura
Set yogurt's physical characteristics are greatly affected by the homogenization and heat treatment processes. In our previous study, set yogurt treated at 130°C and with the fat particle size reduced to ≤0.6 μm had equivalent curd strength, less syneresis and smoother texture than yogurt treated at 95°C. When investigating the mechanisms underlying yogurt's physical properties, it is important to
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Detection of the β-lactoglobulin genotype in zebu cattle (Gangatiri) milk using high-resolution accurate mass spectroscopy J. Dairy Res. (IF 2.1) Pub Date : 2023-08-25 Manish Kumar Singh, Arvind Kumar, Ramadevi Nimmanapalli, Anand Kumar Pandey
We studied the genetic polymorphism of beta-lactoglobulin (β-Lg) whey protein in Gangatiri zebu cows for this Research Communication. The polymorphic nature of milk protein fractions and their association with milk production traits, composition and quality has attracted several efforts in evaluating the allelic distribution of protein locus as a potential dairy trait marker. Genetic variants of β-Lg
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Detection of two SNPs of the LIPE gene in Holstein–Friesian cows with divergent milk production J. Dairy Res. (IF 2.1) Pub Date : 2023-08-24 Seham El-Kassas, Haitham G. Abo-Al-Ela, Esraa Abdulraouf, Mohamed Atef Helal, A. M. Sakr, Safaa E. Abdo
The LIPE gene (lipase E, hormone-sensitive type), also known as hormone-sensitive lipase, acts as a primary regulator of lipid metabolism during lactation in cows. We studied a total of two hundred Holstein–Friesian cows and performed sequencing analysis that revealed two synonymous nucleotide changes within the LIPE gene: a transition change, c.276 T > C in exon 2 (g.50631651 T > C; position 351 of
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The relationship between feed efficiency and behaviour differs between lactating Holstein and Jersey cows J. Dairy Res. (IF 2.1) Pub Date : 2023-08-24 Vivi M. Thorup, Lene Munksgaard, Marta Terré, Julie C. S. Henriksen, Martin R. Weisbjerg, Peter Løvendahl
In dairy production, high feed efficiency (FE) is important to reduce feed costs and negative impacts of milk production on the climate and environment, yet little is known about the relationship between FE, eating behaviour and activity. This research communication describes how cows differing in FE, expressed as daily energy corrected milk production per unit of feed intake, differed in eating behaviour
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Association between dam and calf measurements with overall and fetopelvic dystocia in Holstein heifers J. Dairy Res. (IF 2.1) Pub Date : 2023-08-17 Angeliki Tsaousioti, Anastasia Praxitelous, Akke Kok, Evangelos Kiossis, Constantinos Boscos, Georgios Tsousis
We investigated the relationship between dam's pelvic and calf's dimensions with dystocia due to fetopelvic disproportion in the Holstein breed and estimated risk factors and dystocia probability. For this purpose, external pelvic measurements were performed in 402 heifers 15 ± 11 (1–38) days ante-partum and specific conformation measurements were obtained from their calves 1.7 ± 1.2 post-partum. Dystocia
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Milk coagulation properties are moderately heritable in dairy cows: a meta-analysis using the random-effects model J. Dairy Res. (IF 2.1) Pub Date : 2023-08-17 Navid Ghavi Hossein-Zadeh
This study aimed to conduct a meta-analysis using the random-effects model to merge published genetic parameter estimates for milk coagulation properties (MCP: comprising rennet coagulation time (RCT), curd-firming time (k20), curd firmness 30 min after rennet addition (a30), titrable acidity (TA) and milk acidity or pH) in dairy cows. Overall, 80 heritability estimates and 157 genetic correlations
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Production of reuterin by Lactobacillus coryniformis and its antimicrobial activities J. Dairy Res. (IF 2.1) Pub Date : 2023-08-17 Harutoshi Tsuda
Reuterin is a broad-spectrum antimicrobial substance produced by lactic acid bacteria, and most previous studies have reported that reuterin is only produced under anaerobic conditions. If there are lactic acid bacteria that also produce it under aerobic conditions, it could be applied to fermented foods. In this study, it was found that Lactobacillus coryniformis WBB05 showed optimal reuterin production
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Seasonal, physiological and bacteriological risk factors for subclinical mastitis in dairy cows maintained under different farming conditions J. Dairy Res. (IF 2.1) Pub Date : 2023-07-07 Deepak Sharma, Sankar Kaniamuthan, Ayyasamy Manimaran, Arumugam Kumaresan, Muniandy Sivaram, Duraisamy Rajendran, Pratik Ramesh Wankhade, Veerasamy Sejian, Sughra Banu
Subclinical mastitis (SCM) is a major health problem of dairy animals in India and across the globe. An identification of potential risk factors of SCM can help for efficient udder health management in dairy animals. In this study, apparently healthy cows (HF crossbred: n = 45; Deoni: n = 43) were screened for SCM during different seasons through milk somatic cell count (SCC: reference test using 200
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Effect of crude glycerin supplementation via drinking water on feed intake, water intake and productive performance of dairy ewes J. Dairy Res. (IF 2.1) Pub Date : 2023-07-06 Felipe Santiago Santos, Hemilly Cristina Menezes de Sá, Luciano Soares de Lima, Tássia Ludmila Teles Martins, Flávio Augusto Pereira Alvarenga, José André Junior, Luciana Freitas Guedes, Leonardo de Rago Nery Alves, Joana Palhares Campolina, Gilberto de Lima Macedo Júnior, Iran Borges
This study was performed to determine the effects of crude glycerin (CG) supplementation in drinking water on DM and nutrient intake, milk production, milk composition, and serum glucose. Twenty multiparous Lacaune × East Friesian ewes were randomly distributed into four dietary treatments throughout the lactation cycle. Treatments consisted of doses of CG supplementation via drinking water as follows:
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The prevalence of coagulase-negative staphylococcus associated with bovine mastitis in China and its antimicrobial resistance rate: a meta-analysis J. Dairy Res. (IF 2.1) Pub Date : 2023-06-29 Jianming Deng, Kai Liu, Kuan Wang, Bowen Yang, Hui Xu, Juyu Wang, Feiyan Dai, Xiao Xiao, Xiaolong Gu, Limei Zhang, Weijie Qu
To contribute to the treatment decision and optimize coagulase-negative staphylococcus (CNS) control programs, we conducted a meta-analysis to investigate the epidemiology and antimicrobial resistance rates of coagulase-negative staphylococcus associated with bovine mastitis in China. Three databases (PubMed, Google scholar and China National Knowledge Infrastructure database) were utilized to obtain
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Detection of lytic phage infecting flavour-producing strain of Lacticaseibacillus paracasei in the dairy effluents of Kerala J. Dairy Res. (IF 2.1) Pub Date : 2023-06-21 Archana Chandran, Athrayil Kalathil Beena, Murugadas Vaiyapuri, Lijo John, S. N. Rajakumar, Sudheer Babu, Ligimol James, Mundakka Paramban Rahila
The performance of the starter culture is a critical factor that decides the quality of fermented milk. Dahi is a fermented milk product popular in India made using a mixed starter culture of lactic acid bacteria comprising acid and flavour producers. The prevalence of bacteriophages in the dairy environment can critically affect the activity of these starter cultures resulting in starter failure.
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Effects of calcium chloride substitution on the physicochemical properties of Minas Frescal cheese J. Dairy Res. (IF 2.1) Pub Date : 2023-06-20 Fernanda Lopes da Silva, Andressa Fusieger, Maria Tereza Cratiú Moreira, Isabelle Carolina Oliveira, Ítalo Tuler Perrone, Naaman Francisco Nogueira Silva, Rodrigo Stephani, Antônio Fernandes de Carvalho
The aim in this research paper was to investigate the effect of using calcium monophosphate (MCP) and MCP mixed with commercial phosphates salts, in total or partial replacement of calcium chloride (CaCl2) in the manufacture of Minas Frescal cheese. Initially, model cheeses were made to perform the rheological analysis during the coagulation process. Of these, the five best treatments were chosen to
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Flagella are an important virulence factor in the subclinical persistence of Escherichia coli in bovine mammary gland J. Dairy Res. (IF 2.1) Pub Date : 2023-06-16 Maysa Serpa Gonçalves, Jamila PJ Faria, Juliana R Silva, Dircéia AC Custódio, João B Ribeiro, Alessandro de S Guimarães, Elaine MS Dorneles, Geraldo M Costa
We compared the virulence profile and REP-PCR genotypes of Escherichia coli strains isolated from subclinical and clinical mastitis cases and dairy farm environments in Minas Gerais State, Brazil, to determine virulence factors and genotypes potentially associated with subclinical persistence in the udder. The virulence profile was obtained by the search for three virulence genes: lpfA (long polar
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Effects of time and temperature of storage on chemical and nutritional characteristics of raw milk for Provolone Valpadana PDO cheesemaking: a multivariate approach J. Dairy Res. (IF 2.1) Pub Date : 2023-06-16 Federico Paggio, Mena Ritota, Maria Gabriella Di Costanzo, Stefania Barzaghi, Lucia Monti, Alessandro Ulrici, Pamela Manzi
We evaluated the possibility of increasing the storage temperature of raw milk for Provolone Valpadana cheesemaking, to identify the most suitable conditions of time and temperature for a pre-maturation process. We used Principal Component Analysis (PCA) to analyze the overall effects of different storage conditions on chemical, nutritional and technological characteristics of the raw milk. Four different
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Sonication as a pre-processing step to alter acid whey generation during Greek yoghurt manufacture J. Dairy Res. (IF 2.1) Pub Date : 2023-06-09 Kai Xu, Mayumi Silva, Jayani Chandrapala
We investigated sonication as a pre-processing step to reduce acid whey generation during Greek yoghurt manufacture. The generation of a large amount of acid whey during the production of Greek yoghurt is an ongoing problem in the dairy industry and many studies are currently focusing on reducing it. We focused on the use of ultrasonication as a novel approach to minimize the casein fraction in the
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Eggnog: process optimization and characterization of a dairy-based beverage J. Dairy Res. (IF 2.1) Pub Date : 2023-06-02 Kamini Sharma, Ashish Kumar Singh, Dharani Kumar Maddipatla, Gaurav Kr Deshwal, Priyanka Singh Rao, Heena Sharma
Eggnog, a dairy-based beverage, comprises both milk and egg proteins. We aimed at optimizing the eggnog formulation using Box–Behnken design of response surface methodology. The combined effects of milk (60–75), cream (25–35) and eggnog base (6–8, all three as g 100/ml) were investigated on heat coagulation time, viscosity and thermal gelation temperature. ANOVA indicated that experimental data were
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Effect of different production methods on quality parameters of Hatay Künefe cheese J. Dairy Res. (IF 2.1) Pub Date : 2023-05-29 Nuray Güzeler, Ahmet Refik Çay, Firuza Koboyeva, Mustafa Kadir Esen
We investigated four different production methods of Künefe cheese, emphasizing their industrial importance. The four methods used fresh Künefe cheese (FKC), salted Künefe cheese (SKC), Boru type Künefe cheese (BKC) and culture-added processed Künefe cheese (CPKC), all used in the production of Künefe, a syrupy dessert unique to the Middle East. FKC was produced as a result of curd formation from raw
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Investigation of conceptus stimulated gene expression in buffalo peripheral blood mononuclear cells as potential diagnostic markers of early pregnancy J. Dairy Res. (IF 2.1) Pub Date : 2023-05-29 Paramjeet Sharma, Ratan Kumar Choudhary, Navdeep Singh Ratta, Sikh Tejinder Singh
Exploration of novel strategies for early pregnancy diagnosis is pivotal in enhancing the reproductive potential and monetary gains from dairy herds. In buffalo, the trophectoderm cells of the elongating conceptus secrete interferon-tau that stimulates the transcription of various genes in peripheral blood mononuclear cells (PBMC) during the peri-implantation period. We explored the differential expression
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Pathogens in milk of goats and their relationship with somatic cell count J. Dairy Res. (IF 2.1) Pub Date : 2023-05-25 Kristína Tvarožková, Vladimír Tančin, Michal Uhrinčať, Marta Oravcová, Lukáš Hleba, Barbora Gancárová, Lucia Mačuhová, Martin Ptáček, Pierre-Guy Marnet
We evaluated the presence of bacterial pathogens in the milk of goats and their relationship with somatic cell count (SCC) and milk composition. The study was performed on a dairy farm in northern Slovakia. Half udder milk samples were collected from goats in June and July. The samples were divided on the basis of SCC into 4 bands (SCC1 lowest to SCC4 highest). Bacterial pathogens were only detected
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Effect of postruminal supply of linseed oil in dairy cows: 2. Milk fatty acid profile and oxidative stability J. Dairy Res. (IF 2.1) Pub Date : 2023-05-08 Daniel E. Rico, Rachel Gervais, Sara M. Peňa-Cotrino, Yolaine Lebeuf, P. Yvan Chouinard
Our objective was to study the effect of increasing postruminal supply of linseed oil (L-oil), as a source of cis-9, cis-12, cis-15 18:3, on milk fatty acid profile and to assess the resulting impact on the development of volatile degradation products during the storage of homogenized milk. Five Holstein dairy cows fitted with a rumen cannula were randomly distributed in a 5 × 5 Latin square design
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Effect of postruminal supply of linseed oil in dairy cows: 1. Production performance and fate of postruminally available α-linolenic acid J. Dairy Res. (IF 2.1) Pub Date : 2023-05-04 Rachel Gervais, Daniel E. Rico, Sara M. Peňa-Cotrino, Yolaine Lebeuf, P. Yvan Chouinard
Triacylglycerols (TAG) are the primary sources of preformed fatty acids (FA) for lipid synthesis in the mammary gland. However, polyunsaturated FA escaping ruminal biohydrogenation are selectively incorporated into cholesterol esters (CE) and phospholipids (PL). The aim of the current experiment was to study the effects of abomasal infusion of increasing amount of linseed oil (L-oil) on plasma distribution
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Predicting live weight using body volume formula in lactating water buffalo J. Dairy Res. (IF 2.1) Pub Date : 2023-05-04 Remedio Ramos-Zapata, Camila Dominguez-Madrigal, Ricardo-A. García-Herrera, Enrique Camacho-Perez, Jesús Manuel Lugo-Quintal, Thobela Louis Tyasi, Antonio Leandro Chaves Gurgel, Luís Carlos Vinhas Ítavo, Alfonso Juventino Chay-Canul
Live weight (LW) is an important piece of information within production systems, as it is related to several other economic characteristics. However, in the main buffalo-producing regions in the world, it is not common to periodically weigh the animals. We develop and evaluate linear, quadratic, and allometric mathematical models to predict LW using the body volume (BV) formula in lactating water buffalo
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Virulence factors, antimicrobial resistance and phylogeny of bovine mastitis-associated Streptococcus dysgalactiae J. Dairy Res. (IF 2.1) Pub Date : 2023-04-12 Bruna Lourenço Crippa, Marjory Xavier Rodrigues, Tiago Tomazi, Yongqiang Yang, Liliana de Oliveira Rocha, Rodrigo Carvalho Bicalho, Nathália Cristina Cirone Silva
We carried out a thorough genetic evaluation of Streptococcus dysgalactiae isolated from clinical bovine mastitis cases and performed a phylogenetic analysis to represent the evolutionary relationship between S. dysgalactiae sequences. A total of 35 S. dysgalactiae strains were isolated from cases of clinical mastitis identified at a large commercial dairy farm located near Ithaca, New York. Whole-genome
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Full-fat corn germ in diets for dairy cows as an alternative to ground corn J. Dairy Res. (IF 2.1) Pub Date : 2023-04-11 Antônio J. Netto, Marco A. S. da Gama, Sebastião I. Guido, Jonas G. Inácio, Juana C. C. Chagas, Mohammad Ramin, Milena N. Rabelo, Silas B. Félix, Camila S. da Silva, Marcelo de A. Ferreira
The experiments reported in this research paper address the effects of replacing ground corn (GC) with full-fat corn germ (FFCG) on nutrient intake and digestibility, nitrogen utilization efficiency, performance, and predicted methane production in dairy cows fed cactus cladodes and sugarcane. We hypothesized that the inclusion of FFCG in the diet would not alter the performance of lactating cows but
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Antimicrobial susceptibility and biofilm forming ability of staphylococci from subclinical buffalo mastitis J. Dairy Res. (IF 2.1) Pub Date : 2023-03-13 Ece Koldaş Ürer, Özkan Aslantaş, Erhan Tek, Mehmet Ali Yılmaz, Yaşar Ergün
The starting objective of this research communication was to determine the prevalence of subclinical mastitis in buffalo in Turkey. We also seeked to isolate and identify staphylococci, determine their antimicrobial susceptibilities and biofilm-forming abilities as well as investigating the presence of biofilm-related genes and microbial surface components recognizing adhesive matrix molecules. A total