Superovulatory response and embryo production potential of Jakhrana goats treated with porcine follicle stimulating hormone

Abstract

Six regularly cycling adult Jakhrana goats were superovulated during mid to late luteal phase of oestrous cycle by
administering 16 mg FSH-P (Sigma Laboratories , USA) 1/M in reducing dose schedule over a period of 3 days at 12 hours interval.
Oestrus was synchronized by using Lutalyse (Dinoprost trometharnine, Upjohn, USA) @7.5 mg 1/M per goat or½ Crestar implant
(Norgestomet +Oestradiol V alerate Intervet, Holland). Goats exhibiting oestrus after treatment were naturally bred at the onset of
oestrus and 12 hours later. Each responded goat received hCG (Chorulon, Intervet, Holland) @ 500 IU IN 10-12 hours after the
onset of synchronized oestrus to enhance ovulatory rate. Five of six (83.33%) goats responded to oestrus synchronizing treatments
within 24-36 hours (average 31.20±2.62 hrs.) of treatment withdrawal and stayed in oestrus for 24 - 48 hours (average 31.20±4.29
hrs). Responders were subjected to mid-ventral laparotomy after 74-84 hours of oestrus onset to flush embryos from oviducts.
Average ovarian response and transferable embryo recovery were 9.40±2.53 and 5.20±2.71, respectively. One donor showed
exceptionally good embryo recovery of 17 embryos. Unruptured follicles averaged 5.40±1.34. Recovered embryos were transferred
in 5 recipients and remaining were used for freezing. Study revealed the feasibility of using this technique to enhance kidding rate in
this unexplored goat breed.