Results 11 to 20 of about 2,048,354 (300)

COMPARISON OF DIFFERENT PROCEDURES FOR LACTATION LENGTH ADJUSTMENT OF MILK YIELD IN SAHIWAL CATTLE [PDF]

Pakistan Veterinary Journal, 2004
The purpose of the present study was to compare three procedures for lactation length adjustment of milk yield. For this purpose, weekly milk yield records (n = 2039) of Sahiwal cows were used. Multiplicative adjustments using simple linear regression of
I. R. Bajwa, M. S. Khan, M. A. Khan1 and K. Z. Gondal2
doaj   +2 more sources

ELF5-Mediated Enhancer-Promoter Interaction Regulates LALBA Expression in Ovine Mammary Gland. [PDF]

Adv Sci (Weinh)
In the study, we systematically investigate the epigenetic mechanisms underlying lactation traits in sheep by integrating transcriptomic, chromatin accessibility, histone modification, and functional analyses. We identify a super‐enhancer at the LALBA locus and demonstrate that enhancer E4 functions as its core regulatory element.
Wu X, Wang J, Hao Z, Li M, Zhen H, Liu Y, Zhao G, Ren C, Zhou X, Hu H, Li M, Shi N.   +11 more
europepmc   +2 more sources

Phenotypic effects of calving ease on the subsequent fertility and milk production of dam and calf in UK Holstein-Friesian heifers [PDF]

, 2011
The effect of calving ease on the fertility and production performance of both dam and calf was studied in approximately 50,000 and 10,000 UK Holstein-Friesian heifers and heifer calves, respectively. The first objective of this study was to estimate the
Coffey, M.P., Mrode, R; id_orcid, S.A.E. Eaglen, J.A. Woolliams, R. Mrode, Mrode, R., Wall, E; id_orcid, Wall, E., Woolliams, JA, Woolliams, J.A., Coffey, MP, E. Wall, Eaglen, SAE, M.P. Coffey, Eaglen, Sophie   +14 more
core   +1 more source

Modelling temperature effects on milk production : a study on Holstein cows at a Japanese farm [PDF]

, 2014
Milk yield and its composition vary according to individual cows as well as to a variety of different environment conditions, such as temperature.
Machiko Yano, Shimadzu, Hideyasu, Hideyasu Shimadzu, Endo, Toshiki, Toshiki Endo, Yano, Machiko   +5 more
core   +1 more source

The effect of lactation number, stage, length, and milking frequency on milk yield in Korean Holstein dairy cows using automatic milking system [PDF]

Asian-Australasian Journal of Animal Sciences, 2017
Objective The aim of the current study was to describe the relationship between milk yield and lactation number, stage, length and milking frequency in Korean Holstein dairy cows using an automatic milking system (AMS).
Mayakrishnan Vijayakumar, Ji Hoo Park, Kwang Seok Ki, Dong Hyun Lim, Sang Bum Kim, Seong Min Park, Ha Yeon Jeong, Beom Young Park, Tae Il Kim   +8 more
doaj   +1 more source

Body condition score and live-weight effects on milk production in Irish Holstein-Friesian dairy cows [PDF]

, 2007
peer-reviewedThe objective of the present study was to quantify the relationships among body condition score (BCS; scale 1 to 5), live weight (WT) and milk production in Irish Holstein-Friesian spring calving dairy cows.
Buckley, Frank, Dillon, Pat, Berry, Donagh   +2 more
core   +1 more source

Prenatal maternal effects on body condition score, female fertility, and milk yield of dairy cows [PDF]

, 2007
In this study, maternal effects were described as age of dam at first and second calving, first-lactation body condition score (BCS) of the dam during gestation, and milk yield of the dam.
Brotherstone, S., Coffey, M. P., Coffey, MP, Banos, G., Banos, G; id_orcid, Brotherstone, S   +5 more
core   +1 more source

Evaluation of reference lactation length in Chios dairy sheep

Animal, 2019
Definition and establishment of a fixed reference lactation length could provide useful tools for on-farm comparison of ewes and flock management as well as genetic evaluations for the breeding programme. The objectives of this study were to (i) evaluate
Z. Basdagianni, E. Sinapis, G. Banos
doaj   +1 more source

Effects of Premilking Stimulation on Complete Lactation Milk Yield and Milking Performance

Journal of Dairy Science, 1987
Effects of premilking preparation on complete lactation performance were measured with two groups of multiparous Holstein cows; 1) 17 cows received full stimulation, a 60-s routine, and 2) 16 cows received minimum stimulation, a 15-s routine, before machine attachment.
W G, Merrill, R, Sagi, L G, Petersson, T V, Bui, H N, Erb, D M, Galton, R, Gates   +6 more
openaire   +2 more sources

Selecting for Lactation Curve and Milk Yield in Dairy Cattle

Journal of Dairy Science, 1985
Knowledge of genetic relationships between characteristics of lactation curves and lactation yields is essential for joint selection for both. An equation, yt = atbexp(-ct), was chosen to depict individual lactation curves for 5,927 first lactations by Holsteins in 557 herds in Michigan Dairy Herd Improvement where yt is daily milk yield at day t in ...
T A, Ferris, I L, Mao, C R, Anderson
openaire   +2 more sources