Dose Titration of Sustained-Release Recombinant Bovine Somatotropin in Lactating Dairy Cows
نویسندگان
چکیده
منابع مشابه
Fertility of lactating dairy cows administered recombinant bovine somatotropin during heat stress.
Administration of recombinant bovine somatotropin (bST) to lactating dairy cows during heat stress increases milk yield, but it also can increase body temperature and may therefore compromise fertility. However, it is possible that bST treatment could increase fertility during heat stress because it has been reported to increase fertility in lactating cows. In addition, bST increases secretion ...
متن کاملPregnancy success of lactating Holstein cows after a single administration of a sustained-release formulation of recombinant bovine somatotropin
BACKGROUND Results regarding the use of bovine somatotropin for enhancing fertility in dairy cattle are variable. Here, the hypothesis was tested that a single injection of a sustained-release preparation of bovine somatotropin (bST) during the preovulatory period would improve pregnancy success of lactating dairy cows at first service. RESULTS The first experiment was conducted in a temperat...
متن کاملEffects of bovine somatotropin injection on serum concentrations of progesterone in non-lactating dairy cows
The objective of this experiment was to evaluate the effects of bovine somatotropin administration on serum concentrations of glucose, insulin, NEFA, IGF-I, and progesterone (P4) in ovariectomized non-lactating dairy cows receiving exogenous P4, as a model to estimate treatment effects on hepatic P4 degradation. Ten non-lactating, non-pregnant, and ovariectomized Gir Holstein cows were assigned...
متن کاملEffect of Bovine Somatotropin on the Lactational and Reproductive Performance of Lactating Dairy Cows - a Review
Bovine somatotropin (bST) increases milk production in dairy animals. The maximum increase in milk production has been observed up to 41%. Somatotropin did not change milk composition significantly. During short-term application of bST, cows mobilized their body-reserves to support the increased milk production. Although DM intake of cows was increased in the long-term applications, however, gr...
متن کاملEffects of recombinant bovine somatotropin administration to lactating goats
Eight multiparus lactating goats, matched for parity and days in milk were used to evaluate the effects of recombinant bovine somatotropin (rbST) administration on milk yield and composition, as well as on certain metabolic parameters. The experiment was a switch-back design, with three periods lasting 28 days each. Animals were divided into two groups (n 4) and treatments consisted of subcut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1993
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(93)77441-x