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The experiment was carried out in milk shed areas of Panchamrut dairy on 23 postpartum buffaloes, 16 true anoestrus and 7 normal cyclic under field condition with to evaluate their response to CIDR and Ovsynch protocol by monitoring estrus induction rate, conception rate and plasma progesterone profile following time interval post-treatment/AI. CIDR protocol was found to be better in improving conception rate (66.66 vs. 57.14%) in true anoestrus buffaloes. In general, both the protocols improve conception rates and plasma progesterone level in anoestrus buffaloes, though there was no significant infiuence on plasma protein and cholesterol profile. [ABSTRACT FROM AUTHOR]

This study was carried out on 24 pubertal anestrus Gir heifers of an organized farm during breeding season. The animals were divided into four groups (six in each group) and. were put under Ovsynch, CIDR, Ovsynch-CIDR combination protocol and control group. All the animals (100%) in each treatment protocol exhibited estrus between 10 and 20 hrs after second hormone (GnRH or estradiol valerate) injection and were inseminated twice with frozen semen at fixed time. The pregnancy rates at induced estrus with the three protocols were 16.66, 33.33 and 50.00 per cent, respectively and the corresponding overall pregnancy rates (2 cycles) were 50.00, 66.66 and 66.66 per cent. Plasma progesterone levels on day 7 of treatment and on day 20 post-Al were significantly higher (P < 0.5) than the levels at pretreatment and on the day of induced estrus, which were at par, in all the three protocols. In anestrus control group, all the six animals remained anestrus with plasma progesterone levels < 1.20 ng/ml throughout the study period. These results suggest that different hormone protocols, particularly CIDR and Ovsynch-CIDR, may serve as an excellent tool for induction of estrus, ovulation and conception in pubertal anestrus Gir heifers. [ABSTRACT FROM AUTHOR]

A study was carried out on 24 postpartum (> 4 months) anestrous Mehsana buffaloes during breeding season at a private dairy farm. The animals were randomly divided into four groups (six in each), one group served as control. The study included administration of three hormone protocols: i) Ovsynch ii) CIDR and iii) Ovsynch-CIDR combination with fixed-time artificial insemination (FTAI). Examination per rectum on day 60 post-insemination revealed pregnancy rates of 50.00, 50.00 and 83.33 per cent, respectively, in three protocols. Plasma progesterone levels on day 7 of treatment and day 20 post-AI were significantly (P<0.01) higher than the levels at pre-treatment and on the day of induced estrous, which were at par, in all the three protocols and even in control group. In control group, all the six buffaloes remained in anestrum with plasma progesterone level <0.80 ng/ml throughout the study period. These results suggest that estrous synchronization in postpartum anestrous Mehsana buffaloes using above protocols, and Ovsynch-CIDR combination in particular, is beneficial to improve their reproductive efficiency. [ABSTRACT FROM AUTHOR]