Comparative study on the efficacy of prostaglandin F[2] and short-term norgestomet treatments as luteolytic agents in buffaloes

ABSTRACT

Induction of luteolysis in suboesterous buffaloes with palpable and functional cor pora lutea was applied. Different doses of prostaglandin F[2]alpha [lutalyse] were used through intramuscular [25 mg] and vaginal submucosa [12.5 and 7.5 mg] routes. Short-term [9-10 days] norgestomet [Synchro-Met-B] ear implants were also administered for comparison. The results showed that intramuscular injection of 25 mg PGF[2] alpha during summer inducd luteolysis in 70% of the treated animals, while injection of 12.5 mg PGF[2]alpha into vaginal submucosa of suboestrous buffaloes during summer also, resulted in luteolysis in 87.5%. Injection of 7.5 mg PGF[2] alpha into vaginal submucosa in suboestrus buffaloes during winter improved the rsponse [88.89%]. Application of Synchro-Met-B ear implants led to luteolysis in 90.90% of the treated buffaloes. In conclusion, injection of PGF[2] alpha into submucosa proved to be effective, economic and easily applied treatment of suboestrous and/or synchronization of oestrus in buffaloes