Thirty-seven pigs with an initial live weight of 60 kg were used to investigate the effects of daily exogenous porcine somatotropin (pST) administration at two dose levels (0 and 100 micrograms.kg-1.d-1) for a 31-d period on muscle fiber characteristics and meat tenderness of boars, gilts and barrows. Excipient boars and gilts had more alpha W and fewer alpha R fibers than did those receiving p...

General debility and loss of body weight is commonly associated with diabetes meIlitus. This seems to be related to the deficiency of insulin, responsible for the inhibition of oxidative phosphorylation (10) and decreased synthesis of proteins (17) which in turn reduces the elaboration of anterior pituitary trophic hormones (9). Moreover the growth stimulating and nitrogen retaining effects of ...

The protective effect of bovine somatotropin (bST) during experimental Streptococcus uberis mastitis in cows was studied. The left quarters of 10 cows were infected with 500 cfu of S. uberis O140J. Five cows were subcutaneously treated with 500 mg of recombinant bST 7 d before and after infection, and 5 control cows received the excipient. In the treated cows, total milk production significantl...

Forty-eight Yorkshire cross pigs of three stress susceptibility classes (stress positive, stress-carrier, and stress negative) were injected daily with porcine somatotropin (pST; 4 mg/d) or placebo. Each pig was injected in the neck once daily until taken off test, starting when the pigs weighed 59 kg. Porcine somatotropin treatment was terminated at weekly intervals as individual pigs reached ...

This manuscript presents the results of a review of the effects of recombinant bovine somatotropin (rBST) on milk production, milk composition, dry matter intake, and body condition score that was carried out by an expert panel established by the Canadian Veterinary Medical Association (CVMA). The panel was established by the CVMA in response to a request from Health Canada in 1998 and their re...

very little is known about lhr and fshr genes of domestic dromedary camels. the main objective of this study was to determine and analyze partial genomic regions of fshr and lhr genes in dromedary camels for the first time. to this end, a total of 50 dna samples belonging to dromedary camels raised in iran were sent for sequencing (25 samples of each gene). we compared the nucleotide sequences ...

Somatotropin (ST) markedly decreases lipogenesis, fatty acid synthase (FAS) enzyme activity and mRNA abundance in pig adipocytes. The present study was conducted to determine whether the decrease in FAS mRNA in 3T3-F442A adipocytes was the result of a decrease in transcription of the FAS gene and/or a change in FAS mRNA stability. Insulin increased the abundance of FAS mRNA 2-13-fold and fatty ...

Somatotropin (STH) administered to earth gravity birds (1 g) stimulated the mean growth in height of the articular cartilage layer of the distal tibial epiphyses (DTE) and of the resting and proliferating layers of the proximal epiphyses of os tarsometatarsus (PE-TMT). However, it inhibited growth in height of the calcified cartilage zone of both epiphyses. Hypergravity control animals (2 g) sh...

During the cultivation of Marsupenaeus japonicus, there are often obvious differences in growth within same family under food, water quality, and environment, which greatly affects efficiency. To explore molecular mechanism this difference, study used RNA-seq technology to compare transcriptomes M. japonicus individuals with significant from family. A total 1375 differentially expressed genes w...