Application of growth promoters by means of implantation or supplementation to the diets
has been routine in the beef cattle industry of many countries for the better performance in …

Sixty-eight Holstein heifers were used to determine the effects of accelerated growth rates by
increased nutrient intake and estrogen implants on feed efficiency, structural growth, and …

Two hundred rainbow trout (Oncorhynchus mykiss, mean weight 301.5 g) were allotted to
four treatments with five replicates in a randomized block design to determine the dose …

Our objective was to examine the effects of bovine growth hormone (bGH) on growth,
carcass composition and meat quality of dairy heifers. Nine monozygotic twin pairs of …

Lactating, primiparous Holstein cows were continuously infused for 63 d with either
recombinant growth hormone-releasing factor or recombinant bST or were not infused …

Steers were made hyperthyroid or hypothyroid to study the effects of physiological
alterations in thyroid hormone status on plasma growth hormone (GH) profiles, plasma …

Introduction of animal growth‐enhancing technologies will have significant economic
impacts on the US livestock sector. Products analyzed include somatotropins and β …

Advances in biotechnology have resulted in the potential for use of growth promotants in
commercial livestock production. Somatotropins and beta-agonists are the two growth …

Growth hormone (GH or somatotropin, ST) is a nonglycosylated polypeptide of
approximately 22,000 molecular weight secreted by the anterior hypophysis. Primary actions …

Objetivando estudar o efeito da somatotropina bovina recombinante (rbST) sobre o
desempenho, as características de carcaça e as concentrações plasmáticas de IGF-I e …