ESTRUAL CHARACTERISTICS OF WEST AFRICAN DWARF GOAT DOES UNDER THREE ESTRUS INDUCTION PROTOCOLS
LEIGH, O.O & MUOMA U.N
Date : 2016-04-07 Volume : 8

Estrual characteristics of three estrus induction protocols were investigated using thirty multiparous West African dwarf goats with average weight 16.2±3.14 kg. Three aproned bucks were used to determine estrus. Does were assigned equally and randomly to protocols: Chloprostenol (PGG), Ovsynch (OvG), and Estradiol (EG). Goats were fed elephant grass ad libitum, concentrate and clean fresh water. Goats in: PGG received 125 mcg chloprostenol (double injection, i/m ), ten days interval; OvG received 50 mcg Gonadorelin® on day 0, 125 mcg Chloprostenol on day 7, 50 mcg Gonadorelin® on day 9; EG received 1 mg Super Estradiol® (double injections), two days interval. Onset of estrus (OE), proportion of does in estrus (PDE), duration of estrus (DE), reproductive hormones, vaginal cytology, and vulva diameters were studied. The OE, PDE, DE for PGG, OvG and EG were 48 hour, 90%, 2.32±3.84; 0 hour, 100%, 1.62±0.28; 0 hour, 100%, 5.00±0.00, respectively. Across protocols, differences in titers for LH, FSH, and Estradiol were significant (P<0.05) while progesterone was not (P>0.05); SEC (%) for the period 24-96 hours were significant (P<0.05); vertical and horizontal vulva diameters (VDs) were not significant (P>0.05); ratios vertical:horizontal VDs i.e. 1.29:1 (PGG), 1.53:1 (OvG) and 1.37:1 (EG) differed. In conclusion, the protocols synchronized estrus in WAD does; OvG and EG had shortest OE and highest PDE; OvG had least DE; hormone titers (except progesterone) and SEC varied; changes in VDs were similar but, vertical:horizontal VDs was highest in OvG. 1457184876.php