Zobrazeno 1 - 8
of 8
pro vyhledávání: '"M. E. Van Amburgh"'
Publikováno v:
Journal of dairy science. 102(4)
To optimize first lactation and lifetime milk yield, growth benchmarks were established to help meet the appropriate growth objectives of breeding weight and age at an economically viable time and to achieve the optimum body size and composition at f
Autor:
M. E. Van Amburgh
Publikováno v:
Large Dairy Herd Management
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::601761b1433faf3280157b9fec716c1d
https://doi.org/10.3168/ldhm.0630
https://doi.org/10.3168/ldhm.0630
Autor:
F, Soberon, M E, Van Amburgh
Publikováno v:
Journal of animal science. 91(2)
Data from calf studies conducted over the past 20 yr has shown that preweaning nutrient intake, from milk or milk replacer, can have profound effects on development of the calf that enhance first lactation and lifetime productivity. Many of the studi
Publikováno v:
Journal of animal science. 82(4)
Urea recycling in ruminants has been studied extensively in the past, but the mechanisms regulating the amount of urea recycled or excreted remain obscure. To elucidate the role of urea transporters (UT) in N recycling, nine Dorset-Finn ewe lambs (20
Autor:
J C, Marini, M E, Van Amburgh
Publikováno v:
Journal of animal science. 81(2)
To study the effect of dietary N level on urea kinetics and recycling, four Holstein heifers (267 +/- 3.6 kg) were used in a Youden square design. Isocaloric diets with a N content of 1.44, 1.89, 2.50, 2.97, and 3.40% were fed at approximately 1.8 ti
Publikováno v:
Journal of animal science. 80(6)
We investigated the effect of increasing nutrient intake on the responsiveness of the GH/IGF-I system in calves fed a high-protein milk replacer. Fifty-four Holstein bull calves were fed one of three levels (low, medium, and high; n = 18 per treatmen