doi:10.3168/jds.S0022-0302(56)94899-8NortonH.W.Elsevier Inc.Journal of Dairy ScienceNorton HW 1956. Gestation period for Holstein-Friesian cows. Journal of Dairy Science 39, 1619-1621.
Jerseyand Sahiwaldairy cows of differentgenotype.The leastsquaresmeansfor numberof servicesper conception,age at first serviceand gestationperiod were 1.07卤... KC Mudgal,CM Taylor,A Singh 被引量: 3发表: 1985年 Deciphering the immune responses in late gestation Sahiwal cows under different microclima...
Lactation and gestation in dairy cows: flexibility avoids nutritional extremes. Proccedings of the Nutrition Society 60, 527-537.Knight CH (2001) Lactation and gestation in dairy cows: flexibility avoids nutritional extremes. Proc ... CH Knight - 《Proceedings of the Nutrition Society》 被引量:...
All cows were individually fed the same ration after calving. Samples of silages and TMR were obtained twice weekly, frozen, and composited monthly for subsequent compositional analysis by a commercial laboratory (Dairy One, Ithaca, NY) as described previously for a separate trial conducted ...
The objectives were to measure the effects of transition and supplemental barley or rumen-protected protein on visceral tissue mass in dairy cows and the effects of transition and barley on rumen volume and liquid turnover. Cows were individually fed a grass silage-based gestation ration to meet ...
This study evaluated sire type, calf sex and caving number in 15 farms of Okinawa prefecture from 2001 to 2010 to clarify the reasons for transitional changes of gestation length of Japanese Black breeding cows. This study showed that average gestation length was 287.7±5.5 days, and first gesta...
Article: Side of gestation in dairy heifers affects subsequent sperm transport and pregnancy rates after deep insemination into one uterine horn
Effect of late-gestation maternal heat stress on growth and immune function of dairy calvesheat stressgrowthimmune functionHeat stress during the dry period affects the cow's mammary gland development, metabolism, and immunity during the transition period. However, the effect of late-gestation heat ...
Plasma concentrations of pregnancy-associated glycoprotein-1 (PAG-1) in high producing dairy cows suffering early fetal loss during the warm season The present study was designed to establish whether plasma pregnancy-associated glycoprotein-1 (PAG-1) measurements during the early fetal period can be ...
In the period around parturition, cows experience an increased susceptibility for the development of Escherichia coli mastitis. This increased susceptibility has been correlated with a decreased functionality of neutrophils. In the current study, it is suggested that the decreased neutrophil functionality ma...