Vol. 11, Issue 10 (2022)

Author(s):
Nagaraj Gulagi, Ambika, Basawaraj Nitture, RG Bijurkar, MK Tandle, RB Dhabale, Surangi, S Kulkarni, Kartikesh, Venkanagouda Doddagoudar and Nancy Jasrotia

Abstract:
The study was conducted to know the efficacy of different synchronization protocols in postpartum anoestrous Kenguri ewes in non-breeding season. Thirty healthy ewes of 60 days postpartum were selected and divided in to 5 groups, each containing 6 animals (n=6). All the five groups were fed with maize grains (250 gm/ewe/day) for 15 days prior to synchronization protocol as flushing protocol. G-I served as control group with only maize feeding without treatments. After 15 days of Maize feeding, 4 treatment groups received CIDR intravaginal device (0.3 gm of progesterone) left intravaginal for 12 days. After 12 days, during the removal of CIDR, G-II and G-IV animals received I/M inj. PGF2 α @ 125 µg /ewe whereas G-III and G-V received I/M inj. PMSG @ 500 IU/ewe. Upon exhibition of estrus and natural mating, G-IV and G-V animals received I/M inj. hCG @ 500 IU/ewe. Estrus response (%) was 33.33, 33.33, 66.66, 50.00 and 66.66 and conception rate (%) was 50.00, 50.00, 50.00, 66.66 and 75.00 in G-I, G-II, G-III, G-IV and G-V respectively. In conclusion, hCG treated animals had better conception rate in postpartum anoestrous Kenguri ewes.