Zobrazeno 1 - 10
of 262
pro vyhledávání: '"35"'
Publikováno v:
Journal of Dairy Science. 53:1693-1696
Cows were inseminated with 12, 24, or 35 million sperm extended to 0.5 or 0.9ml in egg-yolk citrate or Plus-EX and frozen in 1.0ml ampules. The average 60- to 90-day nonreturn rate of 73.2% for 9,696 cows inseminated with 0.9ml semen was significantl
Autor:
C.V.C. Phyn, T.M. Grala, O.M. Jordan, John R Roche, Chris R. Burke, B. Kuhn-Sherlock, Susanne Meier
Publikováno v:
Journal of Dairy Science. 105:1754-1767
Peripartum metabolism and subsequent reproductive performance of dairy cows are linked, with maladaptation over the transition period associated with poor reproductive success. A herd of seasonal calving, grazing dairy cows was established that diffe
Autor:
G.E. Granados, E.M. Sitko, Michael E. Van Amburgh, M. Masello, Martin M. Perez, Milo C. Wiltbank, Alexandre B. Prata, Mateus Z. Toledo, Caio A Gamarra, Julio O. Giordano, M.L. Stangaferro, Randy D. Shaver, D. Luchini, Rodrigo S. Gennari, Pedro L.J. Monteiro
Publikováno v:
Journal of Dairy Science. 104:11210-11225
Our primary objective was to evaluate the effect of feeding rumen-protected Met (RPM) in the pre- and postpartum total mixed ration (TMR) on pregnancy per artificial insemination (AI) and pregnancy loss in multiparous Holstein cows. We also evaluated
Autor:
F.X. Suarez-Mena, K.M. Aragona, J.D. Quigley, T.M. Hill, T.S. Dennis, R.L. Schlotterbeck, W. Hu
Publikováno v:
Journal of Dairy Science. 103:2217-2232
Our objective was to evaluate effects of feeding milk replacer (MR) at 2 feeding rates on digestion, intake, and growth of young dairy calves, via a meta-analytical approach using individual data. A database was developed from 10 published studies fr
Autor:
Anderson Veronese, Odinei Marques, Ky G Pohler, T.R. Bilby, Ricardo C. Chebel, Francisco Peñagaricano, Rafael Bisinotto
Publikováno v:
Journal of Dairy Science. 102:6639-6648
Fertility traits were recently added to the evaluation of genetic merit, allowing for the selection of Holstein cattle with improved reproductive performance. In the current study, we investigated the associations among genomic merit for daughter pre
Publikováno v:
Journal of Dairy Science. 102:3439-3451
The objective of this study was to evaluate the effect of pegbovigrastim (PEG) treatment of peripartum Holstein cows on the microbiome found in the vagina postpartum using sequencing of the 16S rRNA gene. A subset of cows was randomly sampled from a
Publikováno v:
Journal of Dairy Science. 101:10505-10525
The objective of this experiment was to determine the effect of high versus low progesterone (P4) during the pre-dominance or dominance phase (or both) of ovulatory follicle development on follicular dynamics and fertility of lactating dairy cows. Pr
Autor:
Michael Ballou, T. L. Harris, Y. Liang, Jeffery A. Carroll, M. F. Scott, K. P. Sharon, I. Yoon, Matthew Sellers
Publikováno v:
Journal of Dairy Science. 100:7154-7164
This study was designed to investigate the effects of supplementing SmartCare (SC; Diamond V, Cedar Rapids, IA) in milk replacer and Original XPC (XPC; Diamond V) in calf starter on performance and health of preweaned calves following an oral challen
Publikováno v:
Journal of Dairy Science. 100:6389-6399
Chromium (Cr) has been reported to enhance immune function and improve insulin sensitivity and performance in beef and dairy cattle. However, its effect on bovine macrophage inflammatory and metabolic response is unknown. The objective of this study
Publikováno v:
Journal of Dairy Science. 100:4953-4960
We tested the hypothesis that the uterus of virgin heifers and pregnant cows possessed a resident microbiome by 16S rRNA gene sequencing of the virgin and pregnant bovine uterus. The endometrium of 10 virgin heifers in estrus and the amniotic fluid,