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Detection of bovine milk adulteration in caprine milk with N-acetyl carbohydrate biomarkers by using 1H nuclear magnetic resonance spectroscopy.

L Rysova, V Legarova, Z Pacakova, O Hanus, I Nemeckova, M Klimesova, J Havlik,

In a return to tradition, the popularity of caprine milk is on the rise. However, particularly in countries with developed dairy industries based on bovine milk, there is the risk of adulteration with bovine milk, which is a cheaper alternative. Thus, a rapid, robust, and simple method for the detection ... Read more >>

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[2021, :]

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Invited review: Mechanisms of hypophagia during disease.

W E Brown, B J Bradford,

Suppression of appetite, or hypophagia, is among the most recognizable effects of disease in livestock, with the potential to impair growth, reproduction, and lactation. The continued evolution of the field of immunology has led to a greater understanding of the immune and endocrine signaling networks underlying this conserved response to ... Read more >>

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[2021, :]

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Effect of Lactobacillus hilgardii, Lactobacillus buchneri, or their combination on the fermentation and nutritive value of sorghum silage and corn silage.

Kathy G Arriola, Diwakar Vyas, Donghyeon Kim, Mariele C N Agarussi, Vanessa P Silva, Milton Flores, Yun Jiang, Xue Yanlin, Andres A Pech-Cervantes, Luiz F Ferraretto, Adegbola T Adesogan,

The objective of this study was to determine the effect of inoculation with Lactobacillus hilgardii with or without Lactobacillus buchneri on the fermentation, chemical composition, and aerobic stability of sorghum and corn silage after 2 ensiling durations. Sorghum forage was harvested at 27% dry matter (DM; experiment 1), and different ... Read more >>

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[2021, :]

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Genetic parameters of semen quality traits and genetic correlations with service sire nonreturn rate in Nordic Holstein bulls.

Grum Gebreyesus, Mogens S Lund, Kasia Kupisiewicz, Guosheng Su,

Despite the importance of the quality of semen used in artificial insemination to the reproductive success of dairy herds, few studies have estimated the extent of genetic variability in semen quality traits. Even fewer studies have quantified the correlation between semen quality traits and male fertility. In this study, records ... Read more >>

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[2021, :]

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The effect of pegbovigrastim on early-lactation disease, production, and reproduction in dairy cows.

Sabrina J Van Schyndel, Jocelyn Dubuc, Osvaldo Bogado Pascottini, Jérôme Carrier, David F Kelton, Todd F Duffield, Stephen J LeBlanc,

The objective of this randomized, double-blind, controlled trial was to evaluate the effect of pegbovigrastim (pegylated recombinant bovine granulocyte colony-stimulating factor) on early-lactation disease, milk yield, and reproduction on commercial dairy farms. A total of 1,607 Holstein cows from 6 farms in Ontario and Québec, Canada, were randomly assigned to ... Read more >>

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[2021, :]

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Effect of fumaric acid on the growth of Lactobacillus delbrueckii ssp. bulgaricus during yogurt fermentation.

Eri Yamamoto, Reiko Watanabe, Emi Tooyama, Katsunori Kimura,

Yogurt is traditionally fermented by a symbiotic starter culture of Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus. These bacteria exchange metabolites with each other to meet their nutritional demands during protocooperation, resulting in a shorter fermentation time. In this study, we investigated whether fumaric acid functions as a symbiotic agent ... Read more >>

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[2021, :]

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Assessing effects of dietary and milking frequency changes and injection of cabergoline during dry-off on hunger in dairy cows using 2 feed-thwarting tests.

G A Franchi, M S Herskin, C B Tucker, M Larsen, M B Jensen,

We investigated the single and combined effects of 2 feeding levels (normal lactation diet vs. energy-reduced diet, both fed for ad libitum intake) and 2 daily milking frequencies (twice vs. once) during 1 wk before the dry-off day (d 0), as well as an intramuscular injection of either a dopamine ... Read more >>

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Mechanisms of structure formation underlying the creaming reaction in a processed cheese model system as revealed by light and transmission electron microscopy.

Almut H Vollmer, Ingrun Kieferle, Nabil N Youssef, Ulrich Kulozik,

The "creaming reaction," a general thickening of the molten cheese mass during the manufacture of processed cheese, which is often seen to occur in a stepwise fashion, affects the viscosity and texture of the finished product. Thus, this phenomenon is of critical importance for the processed cheese industry, yet mechanisms ... Read more >>

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A survey of dairy goat kid-rearing practices on Canadian farms and their associations with self-reported farm performance.

S Bélanger-Naud, D Cinq-Mars, C Julien, J Arsenault, S Buczinski, J Lévesque, E Vasseur,

Although future production of dairy goats is influenced by kid-rearing practices, little is known regarding which practices maximize kid growth, welfare, and future production success. The objectives of this survey study were to (1) identify common rearing practices of Canadian commercial dairy goat farms and evaluate their associations with 6 ... Read more >>

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[2021, :]

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Effect of treatment of pneumonia and otitis media with tildipirosin or florfenicol + flunixin meglumine on health and upper respiratory tract microbiota of preweaned Holstein dairy heifers.

L Bringhenti, M Pallu, J C Silva, T Tomazi, A C C H Tomazi, M X Rodrigues, M Cruzado-Bravo, Todd R Bilby, R C Bicalho,

The objective of this randomized clinical study was to compare the effect of 2 antimicrobial interventions, tildipirosin or florfenicol + flunixin meglumine, used for treatment of pneumonia and extralabel treatment for otitis on health parameters and upper respiratory tract (URT) microbiota of preweaned Holstein calves. Housed preweaned Holstein heifers diagnosed ... Read more >>

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Modifiable management practices to improve udder health in dairy cattle during the dry period and early lactation: A scoping review.

Carrie K McMullen, Jan M Sargeant, David F Kelton, Katheryn J Churchill, Kineta S Cousins, Charlotte B Winder,

The objective of this scoping review was to characterize all available literature on modifiable management practices used during the dry period that have been evaluated for their effects on udder health in dairy cattle during the dry period and the subsequent lactation. Five databases and two conference proceedings were searched ... Read more >>

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[2021, :]

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Histidine dose-response effects on lactational performance and plasma amino acid concentrations in lactating dairy cows: 1. Metabolizable protein-adequate diet.

S E Räisänen, C F A Lage, J Oh, A Melgar, K Nedelkov, X Chen, M Miura, A N Hristov,

The objective of this experiment was to determine the effect of increasing digestible His (dHis) doses on milk production, milk composition, and plasma AA concentrations in lactating dairy cows fed diets that meet or exceed their energy and metabolizable protein (MP) requirements. In a companion paper (Räisänen et al., 2021) ... Read more >>

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[2021, :]

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Genome-wide association study and functional analyses for clinical and subclinical ketosis in Holstein cattle.

R A N Soares, G Vargas, T Duffield, F Schenkel, E J Squires,

Ketosis is one of the most frequent metabolic diseases in high-yielding dairy cows and is characterized by high concentrations of ketone bodies in blood, urine, and milk, causing high economic losses. The search for polymorphic genes, whose alleles have different effects on resistance to developing the disease, is of extreme ... Read more >>

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[2021, :]

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Roles of tolC on tolerance to bile salts and biofilm formation in Cronobacter malonaticus.

Xin Wang, Yaping Wang, Na Ling, Yizhong Shen, Danfeng Zhang, Dengyu Liu, Dexin Ou, Qingping Wu, Yingwang Ye,

Bile salts is one of essential components of bile secreted into the intestine to confer antibacterial protection. Cronobacter species are associated with necrotizing enterocolitis in newborns and show a strong tolerance to bile salts. However, little attempt has been made to focus on the molecular basis of the tolerance to ... Read more >>

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[2021, :]

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Histidine dose-response effects on lactational performance and plasma amino acid concentrations in lactating dairy cows: 2. Metabolizable protein-deficient diet.

S E Räisänen, C F A Lage, M E Fetter, A Melgar, A M Pelaez, H A Stefenoni, D E Wasson, S F Cueva, X Zhu, M Miura, A N Hristov,

The objective of this experiment was to determine the effect of increasing digestible His (dHis) levels with a rumen-protected (RP) His product on milk production, milk composition, and plasma AA concentrations in lactating dairy cows fed a metabolizable protein (MP)-deficient diet, according to the National Research Council dairy model from ... Read more >>

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[2021, :]

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Genotype by heat stress interactions for production and functional traits in dairy cows from an across-generation perspective.

C Kipp, K Brügemann, T Yin, K Halli, S König,

The aim of this study was to analyze time-lagged heat stress (HS) effects during late gestation on genetic co(variance) components in dairy cattle across generations for production, female fertility, and health traits. The data set for production and female fertility traits considered 162,492 Holstein Friesian cows from calving years 2003 ... Read more >>

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[2021, :]

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Effect of protein concentrate mixtures and dietary addition of exogenous phytase on major milk minerals and proteins, including casein phosphorylation.

N A Poulsen, G Giagnoni, M Johansen, P Lund, L B Larsen,

Variations in major milk minerals, proteins, and their posttranslational modifications are largely under genetic influence, whereas the effect of nongenetic factors is less studied. Through a controlled feeding experiment (incomplete balanced Latin square design), the effect of concentrate mixtures, based on fava beans, rapeseed meal, or soybean meal as main ... Read more >>

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[2021, :]

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A study on the use of thermal imaging as a diagnostic tool for the detection of digital dermatitis in dairy cattle.

A Anagnostopoulos, M Barden, J Tulloch, K Williams, B Griffiths, C Bedford, M Rudd, A Psifidi, G Banos, G Oikonomou,

Our aims were to (1) determine how interdigital skin temperature (IST), measured using infrared thermography, was associated with different stages of digital dermatitis (DD) lesions and (2) develop and validate models that can use IST measurements to identify cows with an active DD lesion. Between March 2019 and March 2020, ... Read more >>

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Efficiency of removal of whey protein from sweet whey using polymeric microfiltration membranes.

Brandon Carter, Larissa DiMarzo, Joice Pranata, David M Barbano, MaryAnne Drake,

Our objective was to measure whey protein removal percentage from separated sweet whey using spiral-wound (SW) polymeric microfiltration (MF) membranes using a 3-stage, 3× process at 50°C and to compare the performance of polymeric membranes with ceramic membranes. Pasteurized, separated Cheddar cheese whey (1,080 kg) was microfiltered using a polymeric ... Read more >>

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[2021, :]

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Practical implementation of genetic groups in single-step genomic evaluations with Woodbury matrix identity-based genomic relationship inverse.

M Koivula, I Strandén, G P Aamand, E A Mäntysaari,

The growing amount of genomic information in dairy cattle has increased computational and modeling challenges in the single-step evaluations. The computational challenges are due to the dense inverses of genomic (G) and pedigree (A<sub>22</sub>) relationship matrices of genotyped animals in the single-step mixed model equations. An equivalent mixed model equation ... Read more >>

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[2021, :]

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Associations between feeding behaviors collected from an automated milk feeder and disease in group-housed dairy calves in Ontario: A cross-sectional study.

M H Conboy, C B Winder, C Medrano-Galarza, S J LeBlanc, D B Haley, J H C Costa, M A Steele, D L Renaud,

The adoption of automated milk feeders and group housing of preweaning dairy calves has become more common in Canada; however, disease detection in group-housed calves remains a challenge. The aim of this cross-sectional study was to assess whether feeding behavior data collected from a single point in time could be ... Read more >>

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[2021, :]

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Economic and environmental effects of revised metabolizable protein and amino acid recommendations on Canadian dairy farms.

S Binggeli, H Lapierre, E Charbonneau, D R Ouellet, D Pellerin,

The objective of this research was to evaluate the potential economic and environmental effects of the formulation model used to balance dairy rations for metabolizable protein (MP) or 3 essential AA (EAA: His, Lys, and Met) in 3 regions of Canada with different farming systems. The Maritimes, Central Canada, and ... Read more >>

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Corrigendum to "Immunization with a novel recombinant protein (YidR) reduced the risk of clinical mastitis caused by Klebsiella spp. and decreased milk losses and culling risk after Escherichia coli infections" (J. Dairy Sci. 104:4787-4802).

T Tomazi, A C C H Tomazi, J C C Silva, L Bringhenti, M L M C Bravo, M X Rodrigues, R C Bicalho,

J Dairy Sci (Journal of dairy science)
[2021, 104(6):7342]

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Corrigendum to "Addition of straw to the early-lactation diet: Effects on feed intake, milk yield, and subclinical ketosis in Holstein cows" (J. Dairy Sci. 104:3008-3017).

Hesam A Seifi, Julianna M Huzzey, M A Khan, Daniel M Weary, Marina A G von Keyserlingk,

J Dairy Sci (Journal of dairy science)
[2021, 104(6):7343]

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Corrigendum to "Milk production responses to dietary stearic acid vary by production level in dairy cattle" (J. Dairy Sci. 98:1938-1949).

P Piantoni, A L Lock, M S Allen,

J Dairy Sci (Journal of dairy science)
[2021, 104(6):7344]

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