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IJAVMS. 2015; 9(4): 164-176

Estrus Induction and Fertility Response in Postpartum Silent Oestrus Surti Buffaloes treated with Norgestomet Ear Implants alone and in Combination with PGF2α

Jignesh K. Chaudhary, C. T. Khasatiya, Sanjay C. Parmar, Rohit V. Patel and K. K. Tyagi.

The study was conducted on eighteen postpartum silent oestrus (> 45 days postpartum) Surti buffaloes, divided into three equal groups (6 in each) to evaluate the efficacy of Norgestomet ear implant alone (Gr.-I) and in combination with PGF2α (Gr.-II). The buffaloes in Group-I and Group-II were implanted with Crestar ear implant for 9 days with 2 ml i/m injection of Crestar solution (estradiol Valerate) on the day of implant insertion. In Group-II, additionally 500 μg Cloprostenol was given i/m on one day before implant removal. The buffaloes in Group-III served as untreated silent oestrus controls and were given 5 ml Normal Saline i/m as a placebo treatment on 0 and 8th day. The estrus was induced in cent per cent of buffaloes in the Gr-I and Gr-II with mean estrus induction intervals of 2.17 0.06 and 2.03 0.05 days, respectively. These intervals were significantly (P

Key words: Estrus, Fertility, Norgestomet ear implant, PGF2α, Postpartum Silent oestrus

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