Effect of long-term treatment with recombinant bovine somatotropin
and estradiol on hormone concentrations and ovulatory response of superovulated cattle.
Recombinant bovine somatotropin
("rBST") is given to cows to help increase milk production.
Louis, to launch Posilac bovine somatotropin
for increased milk production, which experienced low consumer and producer acceptance when it was approved for market in 1994.
Milk processors also are major users of biotechnology, with approximately one-third of all dairy cattle in the United States are given bovine somatotropin
, a hormone created through biotechnology, to increase milk production per cow.
Drug companies have been working on synthetic BGH--also known as bovine somatotropin
, or BST--for decades.
Physiological responses to repeated endotoxin challenge are selectively affected by recombinant bovine somatotropin
administration to calves.
All varieties and sizes of its Publix branded milk, including whole, reduced fat, low fat, fat free, chocolate, and low-fat chocolate, will now be rbST (recombinant bovine somatotropin
) free, the chain said.
Key words: Heifers, bST, Bovine Somatotropin
, body weight, height
On December 8, the European Commission tabled a draft Regulation classifying bovine somatotropin
(BST), a protein hormone that increases milk yields, among the substances for which no maximum residue limits (MRL) are required.
Citing the debate over the safety of BST (bovine somatotropin
) Leahy said, "Scientists tell us BST is safe, but consumers should be able to decide for themselves what milk they want to drink."
A previous study in crossbred cattle containing 87.5% Holstein Friesian (HF) genes found that a short persistency of lactation accompanied decreases in plasma bovine somatotropin
level (bST) and blood flow to the mammary gland during the transition period from early to mid-lactation (Chaiyabutr et al., 2000).
Recombinant bovine growth hormone (rBGH), also known as rbST (recombinant bovine somatotropin
) is a genetically-engineered pharmaceutical marketed by the Monsanto Co.