Bovine Somatotropin Increases Hepatic Phosphoenolpyruvate Carboxykinase mRNA in Lactating Dairy Cows,
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چکیده
منابع مشابه
Effects 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 کاملFertility 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 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 کاملInteractions of heat stress and bovine somatotropin affecting physiology and immunology of lactating cows.
During summer, 34 cows received daily injections of placebo or 25 mg of bST and were placed in a thermoregulated or a heat stress environment. Heat stress increased rectal temperatures, respiration rates, and plasma cortisol concentrations and decreased milk yield. Four of 9 bST-treated cows and none of 8 control cows became atactic on the 1st d of heat stress. When exposed to heat stress, cows...
متن کاملAnti-idiotypic responses of lactating cows immunized with monoclonal antibodies against bovine somatotropin.
The objective of this study was to produce anti-idiotypic antibodies with bovine somatotropin (bST)-like activity by active immunization of lactating cows and to determine their effects on milk yield. Several monoclonal antibodies against bST were evaluated for their interaction with bST in a rat growth bioassay. Two bST-agonist monoclonal antibodies (1 and 2), and two bST-antagonist monoclonal...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2004
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(04)73282-8