Zobrazeno 1 - 10
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pro vyhledávání: '"35"'
Autor:
G Hibbard, Niels Bastian Kristensen, Kyle R. McLeod, David L. Harmon, S. E. Kitts, D. E. Axe, Eric S. Vanzant, C. C. Taylor-Edwards
Publikováno v:
Taylor-Edwards, C C, Hibbard, G, Kitts, S E, McLeod, K R, Axe, D E, Vanzant, E S, Kristensen, N B & Harmon, D L 2009, ' Effects of slow-release urea on ruminal digesta characteristics and growth performance in beef steers ', Journal of Animal Science, vol. 87, pp. 200-208 . https://doi.org/10.2527/jas.2008-0912
Two experiments were conducted to evaluate the effects of slow-release urea (SRU) versus feed-grade urea on ruminal metabolite characteristics in steers and DMI, gain, and G:F in growing beef steers. Experiment 1 used 12 ruminally cannulated steers (
Autor:
Marta M. Kohmann, Martin Ruiz-Moreno, Nicolas DiLorenzo, Francine M Ciriaco, Vitor R G Mercadante, G. C. Lamb, Darren D Henry
Publikováno v:
Journal of Animal Science. 93:3539-3550
Chitosan was evaluated as a feed additive to mitigate in vivo CH4 emissions in beef cattle. Twenty-four crossbred heifers (BW = 318 ± 35 kg) were used in a randomized block design replicated in 2 periods. The design included a 2 × 3 factorial arran
Publikováno v:
Journal of Animal Science. 92:5275-5284
Subcutaneous fat and marbling both increase in beef cattle during the feeding phase but are antagonistic in regard to their contribution to beef carcass value. The objective of this study was to determine whether cellular factors associated with marb
Autor:
P. J. Defoor, Michael L. Galyean, C. H. Parsons, G. B. Salyer, J. T. Vasconcelos, F. R. Valdez, G. A. Nunnery
Publikováno v:
Journal of Animal Science. 85:2304-2313
Two experiments were conducted to evaluate receiving-period performance, morbidity, and humoral immune response, as well as finishing performance and carcass characteristics of heifers fed different sources of supplemental Zn. In Exp. 1, 97 crossbred
Publikováno v:
Journal of Animal Science. 81:1281-1293
To determine the effects of burdizzo castration alone or in combination with ketoprofen (K), local anesthesia (LA), or caudal epidural anesthesia (EPI) on plasma cortisol, acute-phase proteins, interferon-gamma production, growth, and behavior of bee
Publikováno v:
Journal of Animal Science. 81:1253-1264
To determine the effect of repeated ketoprofen (K) administration to surgically castrated bulls on cortisol, acute-phase proteins, immune function, feed intake, growth and behavior, 50 Holstein x Friesian bulls (11 mo old; 300 +/- 3.3 kg) were assign
Autor:
F. N. Kojima, E. G. M. Bergfeld, M. E. Wehrman, B.R. Lindsey, J.A. Quintal, E J Melvin, E. L. Zanella, J. E. Kinder, K.E. Fike
Publikováno v:
Journal of animal science. 77(3)
Our hypothesis was that estrus synchronization in beef cattle using melengestrol acetate (MGA) and an injection of progesterone (P4) and 17beta-estradiol (E2) to regress dominant ovarian follicles would improve pregnancy rate (number conceived/number
Autor:
N. A. Cole
Publikováno v:
Journal of animal science. 77(1)
Nitrogen excreted by beef cattle can be retained in manure or lost by volatilization to the atmosphere or by runoff and percolation into surface or ground water. Increasing the retention of dietary N should decrease environmental losses. To this end,
Publikováno v:
Journal of Animal Science. 76:1767
Primiparous beef cows (n = 35 Bos taurus, average initial BW of 498 kg) were allotted to treatments in a split-plot designed experiment to determine the effects of supplemental ruminally protected amino acids on cow and calf productivity and metaboli
Publikováno v:
Journal of Animal Science. 68:3300
Beef cattle were treated to synchronize estrus using one of three procedures, and effects on subsequent endocrine responses and fertility were studied. Procedures were 1) feeding .5 mg.head-1.d-1 of melengestrol acetate (MGA) for 21 d (M), 2) feeding