Article
Agriculture, Dairy & Animal Science
Luca Cattaneo, Fiorenzo Piccioli-Cappelli, Andrea Minuti, Erminio Trevisi
Summary: Drying-off is a critical phase for dairy cows that affects their metabolism, inflammatory status, and immune system. Supplementation with Aloe arborescens Mill. during this period can improve liver function and alleviate inflammation.
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
(2023)
Article
Agriculture, Dairy & Animal Science
A. E. Fleming, K. Garrett, K. Froehlich, M. R. Beck, M. C. Mangwe, R. H. Bryant, G. Edwards, P. Gregorini
Summary: The results of the experiment show that supplementing grazing dairy cows with fodder beet can increase rumination and chewing intensity to counteract the reduced degradation of perennial ryegrass due to low ruminal pH.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Veterinary Sciences
Luisa Magrin, Giulio Cozzi, Isabella Lora, Paola Prevedello, Flaviana Gottardo
Summary: Claw disorders are a significant health problem in dairy herds, with potential impacts on cow behavior and milk production. This study found that cows affected by claw disorders showed decreased activity, lower milk yield, and a decreasing trend in rumination time. These patterns could be used to develop algorithms for early lameness detection.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Review
Agriculture, Dairy & Animal Science
Grzegorz Grodkowski, Marcin Golebiewski, Jan Slosarz, Kinga Grodkowska, Piotr Kostusiak, Tomasz Sakowski, Kamila Puppel
Summary: Consumers are increasingly choosing organic farming products because they believe that organic farms do not use pesticides or antibiotics and that animals are provided with the best living conditions. This review discusses the comparison between organic and conventional dairy cattle housing systems in terms of welfare assessment, breed selection, and product quality. It has been shown that cows kept in organic systems usually have better welfare compared to conventional breeding, but conventional farms can also provide better animal welfare through the use of pasture grazing. The taste of milk is affected by pasture feeding, but this depends on consumer preference.
Article
Veterinary Sciences
Vladimir I. Trukhachev, Nikolai P. Buryakov, Sergey O. Shapovalov, Aleksandr N. Shvydkov, Maria A. Buryakova, Irina V. Khardik, Mohamed M. Fathala, Oksana E. Komarova, Dmitrii E. Aleshin
Summary: This study evaluated the effect of adding a multicomponent synbiotic Kormomix (R) Rumin on lactating Holstein cows. The results showed that the inclusion of this synbiotic did not significantly affect milk production, but it improved rumen fermentation and enhanced feed utilization efficiency without causing any harmful effects on blood traits.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Yuhui Zheng, Tengfei He, Tian Xie, Jidong Wang, Zhantao Yang, Xiaoge Sun, Wei Wang, Shengli Li
Summary: This study found that supplementation with 0.6 mg/kg DM of hydroxy-selenomethionine can increase gas production, propionate, and total VFAs production in vitro by altering the relative abundance of specific bacterial species, serving as a potential rumen fermentation regulator in Holstein cows.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Microbiology
Jenna R. Williamson, Todd R. Callaway, Jeferson M. Lourenco, Valerie E. Ryman
Summary: This study aimed to characterize similarities between rumen, fecal, and milk microbiota simultaneously and investigate their associations with milk somatic cell count (SCC) and milk yield. The results demonstrated that rumen, fecal, and milk microbiota populations were distinct, with milk microbiota being the least diverse. Milk microbial populations from cows with low SCC showed a more evenly distributed microbiome compared to cows with high SCC values.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
R. Rearte, S. G. Corva, R. L. de la Sota, I. M. Lacau-Mengido, M. J. Giuliodori
Summary: Poor udder health status has a negative impact on milk yield and reproductive performance in dairy cows. This study found that somatic cell count (SCC) is negatively associated with daily milk yield and the odds for conception in grazing dairy cows.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Chunbo Wei, Tao He, Xuanchen Wan, Siwen Liu, Yibo Dong, Yongli Qu
Summary: This paper conducts a meta-analysis to evaluate the influence of rumen-protected methionine (RPM) on milk yield and milk compositions of dairy cows. The results indicate that adding RPM can improve milk fat and protein concentrations, but does not significantly affect milk yield and lactose concentration. The effects are more pronounced in high-protein feed.
Article
Agriculture, Dairy & Animal Science
M. F. Miguel, H. M. N. Ribeiro-Filho, R. Delagarde
Summary: The effects of corn silage supplementation on milk production of grazing dairy cows depend on the substitution rate between herbage and corn silage, which is influenced by grazing management. This study compared two grazing management strategies to measure the substitution rate, in interaction with grazing intensity. The results showed that supplementing cows with corn silage increased total dry matter intake and milk production for severe grazing, but had no effect for light grazing. The substitution rate between corn silage and grazed herbage was lower for severe grazing compared to light grazing. Overall, the study suggests that corn silage supplementation has limited effects on milk production in grazing dairy cows.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
H. T. Holdorf, S. J. Kendall, K. E. Ruh, M. J. Caputo, G. J. Combs, S. J. Henisz, W. E. Brown, T. Bresolin, R. E. P. Ferreira, J. R. R. Dorea, H. M. White
Summary: Peripartum rumen-protected choline (RPC) supplementation benefits cow health and production, but the optimal dose is unknown. Increasing the dose of prepartum RPC supplementation may increase postpartum milk yield, but there is no additional benefit from increasing the prepartum dose of choline ion on milk production.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Microbiology
Jinjia Zhu, Yicheng Wu, Aoyu Jiang, Bin Li, Tao Ran, Chuanshe Zhou, Dingfu Xiao, Zhiliang Tan
Summary: This study investigated the effects of N-carbamylglutamic acid (NCG) supplementation on rumen microbiota of Holstein dairy cows in the Himalayan region. The results showed that NCG supplementation can lower ruminal NH3-N concentration, increase the production of acetic acid and total volatile fatty acids, and enhance microbial diversity. These findings indicate that the use of NCG can improve the adaptability and production performance of dairy cows in the high-altitude hypoxia environment.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Yuko Kamiya, Tomoyuki Suzuki, Kohei Oikawa, Hisami Kobayashi, Masanori Tohno, Ryoh Nakakubo, Masaaki Matoba, Takahiro Nemoto, Kosuke Minami, Gaku Imamura, Genki Yoshikawa
Summary: We explored the impact of corn silage fermentation quality on various aspects of lactating cows. The study found that cows fed high-quality corn silage had slightly higher dry matter intake compared to those fed low-quality corn silage. The dietary treatment did not significantly affect milk yield or the composition of milk. However, the low-quality corn silage group had higher levels of ruminal acetic acid and tended to produce more methane per dry matter intake. Additionally, cows in the low-quality group showed higher plasma cholesterol levels and increased activity of certain enzymes.
ANIMAL SCIENCE JOURNAL
(2023)
Article
Agriculture, Dairy & Animal Science
M. J. Doran, F. J. Mulligan, M. B. Lynch, A. G. Fahey, N. J. Ryan, C. McDonnell, S. McCabe, K. M. Pierce
Summary: This study evaluated the effects of different cow genotypes and supplement crude protein concentration on milk production, finding that genotypes had a significant impact while the supplement CP concentration did not. Providing low CP concentration had no negative influence on milk production during the main grazing season, potentially offsetting any negative effects with increased pasture dry matter intake.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Yongjia Liu, Jing Zhang, Cong Wang, Gang Guo, Wenjie Huo, Chengqiang Xia, Lei Chen, Yawei Zhang, Caixia Pei, Qiang Liu
Summary: This study investigated the effects of different guanidinoacetic acid (GAA) supplementation levels on lactation performance, nutrient digestion, and ruminal fermentation in dairy cows. The results showed that supplementation of GAA improved milk performance and rumen fermentation in lactating dairy cows.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agriculture, Dairy & Animal Science
Sara Pacheco-Pappenheim, Sine Yener, Kelly Nichols, Jan Dijkstra, Kasper Hettinga, Hein J. F. van Valenberg
Summary: This study analyzed the effects of fat and protein supplementation on milk fat composition, structure, and solid fat content in dairy cattle. The results showed that fat supplementation had more significant changes on milk fat TAG composition and increased the solid fat content. These alterations may impact the absorption of fat and minerals in infant milk-based products and the processing of milk fat.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
L. A. Crompton, L. A. McKnight, C. K. Reynolds, J. L. Ellis, J. Dijkstra, J. France
Summary: This paper investigates two methods of solving the amino acid tracer model and contrasts their solutions. The study shows that solving the model as two four-pool submodels is preferable to the integrated eight-pool model. Experimental data indicate that high and low protein diets have an impact on the partitioning of amino acids in the mammary gland.
JOURNAL OF AGRICULTURAL SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Sanne van Gastelen, Jan Dijkstra, Jeroen M. L. Heck, Maik Kindermann, Arie Klop, Rudi de Mol, Dennis Rijnders, Nicola Walker, Andre Bannink
Summary: The objective of this study was to investigate the potential of 3-Nitrooxypropanol (3-NOP) in reducing CH4 emissions in dairy cattle and whether it was affected by the composition of the basal diet. The results showed that supplementing 3-NOP in a corn silage-based diet was more effective in reducing CH4 emissions compared to a grass silage-based diet.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Multidisciplinary Sciences
Claudia Arndt, Alexander N. Hristov, William J. Price, Shelby C. McClelland, Amalia M. Pelaez, Sergio F. Cueva, Joonpyo Oh, Jan Dijkstra, Andre Bannink, Ali R. Bayat, Les A. Crompton, Maguy A. Eugene, Dolapo Enahoro, Ermias Kebreab, Michael Kreuzer, Mark McGee, Cecile Martin, Charles J. Newbold, Christopher K. Reynolds, Angela Schwarm, Kevin J. Shingfield, Jolien B. Veneman, David R. Yanez-Ruiz, Zhongtang Yu
Summary: To meet the 1.5 degrees C target, strategies to reduce methane emissions from ruminants must be implemented, including decreasing CH4 per unit meat or milk and decreasing absolute CH4 emissions. The adoption of the most effective strategies could achieve the goal by 2030, but not by 2050.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Agriculture, Dairy & Animal Science
B. Kuhla, R. J. Dewhurst, J. Dijkstra, H. J. Ferguson, D. Humphries, E. Kennedy, P. Lund, C. Martin, L. Munksgaard, M. O'Donovan, C. K. Reynolds, M. Terre, I. Veissier, R. Baumont
Article
Agriculture, Multidisciplinary
L. A. Crompton, L. L. McKnight, C. K. Reynolds, J. A. N. Mills, J. L. Ellis, M. D. Hanigan, J. Dijkstra, B. J. Bequette, A. Bannink, J. France
Summary: An isotope dilution model is constructed to partition the uptake of phenylalanine and tyrosine by the liver of lactating dairy cows. The model allows calculation of uptake rate, hydroxylation, synthesis, and degradation of protein. Measurement of plasma flow rate and amino acid concentrations, along with isotopic enrichments, are required for model solution.
JOURNAL OF AGRICULTURAL SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
A. Bougouin, A. Hristov, J. Dijkstra, M. J. Aguerre, S. Ahvenjarvi, C. Arndt, A. Bannink, A. R. Bayat, C. Benchaar, T. Boland, W. E. Brown, L. A. Crompton, F. Dehareng, I. Dufrasne, M. Eugene, E. Froidmont, S. van Gastelen, P. C. Garnsworthy, A. Halmemies-Beauchet-Filleau, S. Herremans, P. Huhtanen, M. Johansen, A. Kidane, M. Kreuzer, B. Kuhla, F. Lessire, P. Lund, E. M. K. Minnee, C. Munoz, M. Niu, P. Noziere, D. Pacheco, E. Prestlokken, C. K. Reynolds, A. Schwarm, J. W. Spek, M. Terranova, A. Vanhatalo, M. A. Wattiaux, M. R. Weisbjerg, D. R. Yanez-Ruiz, Z. Yu, E. Kebreab
Summary: This study aimed to predict nitrogen excretion in feces and urine of lactating dairy cows by collecting data from different continents. The study found that simple models based on dry matter intake or nitrogen intake performed well in predicting fecal nitrogen excretion, while simple models based on milk urea nitrogen and nitrogen intake performed better in predicting urinary nitrogen excretion. In the absence of intake data, complex equations using easily measured variables can be used to predict fecal, urinary, or total manure nitrogen excretion, but these equations have lower performance.
JOURNAL OF DAIRY SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Rainer Rauch, Kelly Nichols, Jean -Baptiste Daniel, Javier Martin-Tereso, Jan Dijkstra
Summary: This study aimed to compare the effects of static and oscillating dietary protein feeds on nitrogen use efficiency and milk production performance in lactating dairy cows. The results showed that oscillating feeds increased urinary nitrogen excretion in lactating dairy cows, but had no significant effect on milk production performance or nitrogen use efficiency.
Article
Green & Sustainable Science & Technology
Alejandro Belanche, Alexander N. Hristov, Henk J. van Lingen, Stuart E. Denman, Ermias Kebreab, Angela Schwarm, Michael Kreuzer, Mutian Niu, Maguy Eugene, Vincent Niderkorn, Cecile Martin, Harry Archimede, Mark McGee, Christopher K. Reynolds, Les A. Crompton, Ali Reza Bayat, Zhongtang Yu, Andre Bannink, Jan Dijkstra, Alex Chaves, Harry Clark, Stefan Muetzel, Vibeke Lind, Jon M. Moorby, John A. Rooke, Aurelie Aubry, Walter Antezana, Min Wang, Roger Hegarty, V Hutton Oddy, Julian Hill, Philip E. Vercoe, Jean Victor Savian, Adibe Luiz Abdalla, Yosra A. Soltan, Alda Lucia Gomes Monteiro, Juan Carlos Ku-Vera, Gustavo Jaurena, Carlos A. Gomez-Bravo, Olga L. Mayorga, Guilhermo F. S. Congio, David R. Yanez-Ruiz
Summary: This study developed empirical models to predict enteric methane emissions from sheep using a global database. The models showed that including variables such as body weight and organic matter digestibility improved prediction accuracy. Age-specific equations were also found to enhance prediction performance. The study concluded that predicting sheep methane production requires considering variables such as dry matter intake, body weight, and rumen propionate proportion, and appropriate universal equations can be used across different diets and climatic conditions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Agriculture, Dairy & Animal Science
Ermias Kebreab, Andre Bannink, Eleanor May Pressman, Nicola Walker, Alexios Karagiannis, Sanne van Gastelen, Jan Dijkstra
Summary: This study aimed to explain the variability in the mitigating effect of 3-NOP and investigate the interaction between diet composition and 3-NOP dose using meta-analytical approaches. The results showed that models including only the 3-NOP dose had a significant reduction effect on methane production, yield, and intensity. However, the reduction efficiency was lower for diets with higher neutral detergent fiber content. Updating meta-analyses with new data improved model performance.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Chemistry, Applied
N. Arita-Merino, S. Yener, H. J. F. van Valenberg, J. Dijkstra, S. van Gastelen, E. Scholten, D. A. Tzompa-Sosa
Summary: This study aimed to investigate the effects of dietary linseed oil (LSO) supplementation and DGAT1 K232A (DGAT1) polymorphism on the composition and crystallization of bovine milk fat. The results showed that LSO supplementation increased unsaturated triacylglycerols and reduced saturated triacylglycerols in the milk fat. The DGAT1 KK genotype was associated with higher levels of odd-chain saturated triacylglycerols and increased high-melting fraction.
Article
Agriculture, Dairy & Animal Science
Henk J. van Lingen, James G. Fadel, Ermias Kebreab, Andre Bannink, Jan Dijkstra, Sanne van Gastelen
Summary: This study evaluated the impact of different sampling schemes on the estimated daily H2 and CH4 emissions from dairy cattle. Sampling every 0.5 hours was needed for accurate estimation of daily H2 emissions, while less frequent sampling intervals were sufficient for CH4 emissions. The study highlights the importance of accurate sampling schemes for reliable estimation of emissions from cattle.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
S. van Gastelen, J. Dijkstra, W. J. J. Gerrits, M. S. Gilbert, A. Bannink
Summary: Previous research has shown that fermentation plays a significant role in the disappearance of carbohydrates in the small intestine. The low energy efficiency of starch fermentation compared to enzymatic digestion highlights the importance of quantifying postruminal starch fermentation in dairy cows.
Article
Agriculture, Dairy & Animal Science
W. Muizelaar, G. van Duinkerken, Z. Khan, J. Dijkstra
Summary: This study aimed to determine the effect of Chondrus crispus, Saccharina latissima, and Fucus serratus on lactational performance and enteric methane production in dairy cattle. The results showed that Saccharina latissima increased milk yield and lactose content, but did not affect methane emissions.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Fang Wang, Jurgen van Baal, Lu Ma, Xuejun Gao, Jan Dijkstra, Dengpan Bu
Summary: This study investigated the role of MRCK alpha in milk protein and fat production in dairy cows and found a positive correlation between MRCK alpha expression and beta-casein levels in the mammary gland. Silencing MRCK alpha in bovine mammary epithelial cells led to a decrease in basal beta-casein and cell growth, while overexpression had the opposite effect. These findings suggest that MRCK alpha plays an important role in mammary tissue development.