Department of Animal Reproduction, Gynaecology and Obstetrics College of Veterinary Sciences and Animal Husbandry M.P.P.C.V.V., Jabalpur, (Madhya Pradesh), India
Present study was conducted on 28 true anoestrus buffaloes to observe the efficacy of CIDR implant alone and in combination with PMSG for induction of estrus and fertility response. All experimental animals were randomly divided into 4 groups (G1,G2,G3 and G4) each of seven animals. Animals of group G1 served as control whereas animals of G2, G3 and G4 were implanted with CIDR. Animals of G3 and G4 were also administered with oxytetracycline @ 20 ml I/U. In addition to CIDR and oxytetracycline, animals of G4 were also injected PMSG @ 500 I.U on the day of CIDR withdrawal. On removal of implant all the animals of G4 exhibited estrus within 65.14 ± 11.39 hrs with 85.7% conception rate. However, in the animals of G2 and G3 estrus induction rate was 71.4 and 85.7% within 72.00 ± 10.76 and 40.08 ± 2.09 hrs of CIDR withdrawal with 0.00% and 66.6% conception rate, respectively. None expressed estrus in control group. Our results indicated that addition of PMSG to CIDR implant substantially improved ovulation rate and fertility in noncyclic buffaloes.
Buffalo, Anoestrus, CIDR, PMSG
