Results 41 to 50 of about 4,714,251 (292)

Heat stress affects the milk yield, milk composition, serum oxidative status, and metabolites of Holstein cows during mid-lactation

, 2023
Seasonal heat stress and metabolic disorders during mid-lactation are the main factors limiting production in Holstein cows, and several proteins and molecules involved in metabolic pathways are altered in response to stress.
Yongqiang Li, Liang Xin, Jianan Dong, Wei Zhao, Tao Wang, Zhe Sun, Xuefeng Zhang, Zhiyi Han, Xue Chen, Yuguo Zhen, Jun Xiao, Guixin Qin   +11 more
core   +1 more source

Effect of suckler cow genotype on milk yield and pre-weaning calf performance [PDF]

, 2005
peer-reviewedMilk yield and pre-weaning calf performance of spring-calving Charolais (C) and Beef × Holstein-Friesian (BF) cows was compared over 3 experiments.
Caffrey, Patrick J., McGee, Mark, Drennan, Michael J   +2 more
core   +1 more source

Merging and characterising phenotypic data on conventional and rare traits from dairy cattle experimental resources in three countries [PDF]

, 2012
peer-reviewedThis study set out to demonstrate the feasibility of merging data from different experimental resource dairy populations for joint genetic analyses.
Coffey, M.P., Veerkamp, Roel F., Coffey, M. P., Veerkamp, RF, Berry, D.P., Berry, D. P., Berry, DP, Wall, E; id_orcid, Wall, E., Veerkamp, R.F., Coffey, Mike P., Veerkamp, R. F., Coffey, MP, Banos, G., Banos, G; id_orcid, Berry, Donagh   +15 more
core   +1 more source

Yields and Persistency of Lactation in Friesian and Jersey Cows Milked Once Daily [PDF]

Journal of Dairy Science, 2006
Effects of milking cows once daily throughout lactation at high stocking rates (17% more cows/ha than for those milked twice daily) were studied in 2 Friesian and 2 Jersey herds during 3 lactations. Cows were allocated to 2 herds within breed and were milked either once or twice daily, based on age, genetic merit, and previous performance.
R E, Hickson, N, Lopez-Villalobos, D E, Dalley, D A, Clark, C W, Holmes   +4 more
openaire   +2 more sources

Do Walking Distance and Time Away from the Paddock Influence Daily Behaviour Patterns and Milk Yield of Grazing Dairy Cows?

Animals, 2021
In pasture-based systems, cows may spend several hours away from the paddock and may also walk several kilometres to meet daily milking requirements; this could lead cows to experience time constraints for grazing, ruminating and lying time in the ...
Heather W. Neave, J. Paul Edwards, Helen Thoday, Katie Saunders, Gosia Zobel, James R. Webster   +5 more
doaj   +1 more source

Once-daily milking effects in high-yielding Alpine dairy goats [PDF]

Journal of Dairy Science, 2009
Two experiments were conducted to determine the milk loss of high-yielding Alpine goats resulting from once-daily milking (ODM) and its relationship to udder cisternal size. We investigated the effects of application of this management strategy on milk yield, composition, and technological parameters: lipolysis, fat globule size, and cheese yield. In a
Komara, M., Boutinaud, Marion, Ben Chedly, Hedi, Guinard-Flament, Jocelyne, Marnet, Pierre-Guy   +4 more
openaire   +3 more sources

Effects of stage of pregnancy on variance components, daily milk yields and 305-day milk yield in Holstein cows, as estimated by using a test-day model

Animal, 2016
Pregnancy and calving are elements indispensable for dairy production, but the daily milk yield of cows decline as pregnancy progresses, especially during the late stages.
T. Yamazaki, K. Hagiya, H. Takeda, T. Osawa, S. Yamaguchi, Y. Nagamine   +5 more
doaj   +1 more source

Genetic parameters of milk productivity for three lactations of Holstein cattle with different genotypes of LEP gene

BIO Web of Conferences, 2020
The research presents the findings of DNA testing of allelic polymorphism by the AC-PCR method of the LEP gene. The research was conducted among 172 Holstein cows at Integrated Agricultural Production Centre “Stud farm named after Lenin” in Atninsky ...
Akhmetov Tahir M., Safina Natalia Yu., Alimov Azat M., Varlamova Margarita I.   +3 more
doaj   +1 more source

The Effect of Age of Cows on Variability in Mastitis Prevalence Risk and its Concomitant Impacts on the Successive Daily Milk Yield

Contemporary Agriculture, 2023
The purpose of this study is to determine the effect of age of cows on variability in mastitis prevalence risk and its concomitant impacts on their successive daily milk yield by analyzing test-day records of dairy cows collected in the period 2005–2022.
Gantner Vesna, Jožef Ivana, Popović Vera, Solić Dragan, Popović Jovana, Potočnik Klemen   +5 more
doaj   +1 more source

Milking reactivity influences daily yield and electrical resistance of milk in Jaffarabadi buffaloes.

Iranian journal of veterinary research
Buffalo reactivity during milking affects milking procedures, milk yield, and quality.This study evaluated the influence of milking reactivity on the yield, composition, somatic cell count, pH, and electrical resistance of milk in Jaffarabadi buffaloes.A 1-4 point scale, based on leg movement, was used to assess the milking reactivity of buffaloes (n ...
Maurya, P., Patbandha, T. K., Odedra, M. D., Singh, V. K., Kalasava, S. K., Agravat, P. H.   +5 more
openaire   +2 more sources