Effect of some hormones on reproductive performance and some serum biochemical changes in synchronized black goats

K T Mahmood,F T Juma,N N Maroff

doi:10.33899/ijvs.2009.5742

Abstract

In randomized block design, 58 indigenous black mountain goats were examined for the effect of different hormonal treatments in inducing oestrus on selected biochemical characteristics of blood serum that were (aspartate transaminase, AST. Alanine transaminase ALT, Akaline phosphatase, ALP, total protein, albumin and total cholesterol). The animals were randomly assigned into four groups according to their treatment. The control group (C) consisted of 10 females whereas the rest of the groups, each consisted of 12 females. The treatments included a double PGF2α (Dinoprost tromethamine) intramuscular injection (5 mg) at a time interval of 11 days plus an intramuscular injection of pregnant mare serum (PMSG) (400I. Uand 600I. U.) two days before second injection for (treatments, TI, T2) respectively. Treatment (T3) was as that of T1 except PMSG was not injected. T4 was treated as T3 plus an intramuscular injection of gonadotropin releasing hormone (GnRH) (12. 5µg) after 24 hours of second injection of PGF2α was added. The results indicated that oestrus was higher (P

Highlights

Kurdistan native goats breeding are carried out extensively for meat and milk production
There were no significant effects of hormones used in this study on fertilization and fertility, but there was existence of significant effect (P
There was significantly increases (P

Summary

Introduction

Kurdistan native goats breeding are carried out extensively for meat and milk production. The boosting goats production are by using synchronization of estrus conjunction with either natural or artificial insemination. Synchronization of estrus remains a tool with great potential in controlled breeding of sheep and goats has involved the artificial manipulation of ovaries varies in goat when estrus period are synchronized during breeding season [1]. The Prostaglandin (PGF2α) or their analogues are used to synchronize estrus in cattle [2], Sheep [3] and goats [4]. Prostaglandin has been shown to induce luteolysis in the cycling doe during the breeding season. The effectiveness of double injection regime of PGF2α for synchronization of estrus by natural mating in goats was reported [5] conception rate was high with no adverse effective fertility [6]

Methods

Results

Conclusion