Effects of long-term growth hormone-releasing factor administration on plasma growth hormone, luteinizing hormone and progesterone profiles in growing female buffaloes (Bubalus bubalis)

Reproduction in Domestic Animals = Zuchthygiene
M Mondal, B S Prakash

Abstract

To investigate the effects of long-term growth hormone-releasing factor (GRF) administration on plasma growth hormone (GH), LH and progesterone and body weight gain in growing buffalo calves, 12 female Murrah buffaloes within the age group of 6-8 months of age were divided into two groups (treatment and control groups) of six each in such a way so that average body weights between the groups did not differ (p > 0.05). Control buffaloes were not given any hormonal treatment and treatment group buffaloes were treated with synthetic bovine GRF [bGRF (1-44)-NH(2)] at the rate of 10 microg/100 kg body weight intravenously at an interval of 15 days from week 6 (5-week pre-treatment period) till 18 injections were completed (week 6-42 treatment period) and thereafter, effect of exogenous GRF were observed for 10-week post-treatment period. Jugular blood samples were drawn twice a week at 3-4-day intervals for plasma GH, LH and progesterone quantification. Body weight of all animals was recorded twice a week. During pre-treatment period, mean plasma GH, LH and progesterone did not differ (p > 0.05) between the groups. But during treatment as well as post-treatment period, mean plasma GH levels were found to be significantly (p < 0.01) ...Continue Reading

References

Jan 1, 1986·Annual Review of Physiology·M C Gelato, G R Merriam
Mar 1, 1988·Journal of Reproduction and Fertility·S E DodsonG E Lamming
Aug 1, 1984·Journal of Animal Science·T D Etherton, R S Kensinger
Nov 1, 1994·Journal of Reproduction and Fertility·A C EvansN C Rawlings
Dec 18, 2003·Journal of Immunoassay & Immunochemistry·B S PrakashN Anandlaxmi
Apr 2, 2004·Reproduction : the Official Journal of the Society for the Study of Fertility·M Mondal, B S Prakash

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