Effect of FSH (Follicle - stimulating hormone) injection on the superovulation in Saanen goats

Abstract

A total of 12 Saanen goats were used to evaluate the effect of FSH on the superovulation. All goats were inserted CIRD for 14 days and divided into 2 groups: group A: each goat was received a total of 200 mg FSH through 6 equal injections (twice daily at 12 hours interval, 33.3 mg/injection); group B: each  goat was received a total of 200 mg FSH through in 6 decreasing in jections (twice daily at 12 hours interval, 50 mg/injection, 30 mg/injection, and 20 mg/injection). Ovarian response and embryos recovery were evaluated on day 7 after CIRD removal. All of the goats of groups A, B responded to the FSH. Total of follicles per goat; corpus luteum per goat of group A was significantly lower than those of group B (respectively 18.5 and 10.2 together vs 23 and 17.4, respectively, p<0.05). The total of anovulatory follicles per goat of group A was higher than that of group B (respectively 8.3 vs 5.6, p<0.05). The number of morular, blastocyst/goat embryos of group A was lower than that of group B (2.67 vs 4.25, p<0.05 respectively). Althought the number of morular, blastocyst per goat of group B were higher than those of group A, there were no significant differences between group A and B for morular per goat (p>0.05). The results showed that using FSH with decreasing dosages was more effective than equal dosages for superovulation in Saanen goats.