Studies Of Superovulatory Technology In Buffaloes

There are about 22.745 million buffaloes in China at present. One possibility for enhancing buffaloes' reproductive efficiency and economic value are through genetic improvement of the exiting population. Synchronous estrus, superovulation and non-surgical collection of ova in buffaloes were studied in this dissertation.These results indicated that the estrus rates of synchronous estrus in buffaloes were higher with PMSG (i.m.) +PGc (uterus perfusion) than with PGc (uterus perfusion), but there was on significant difference (p>0.05); the time of estrous in buffaloes which received PMSG (i.m) + PGc (uterus perfusion) was 11h earlier than those which received PGc (uterus perfusion) during synchronization (p>0.05). The response of swamp buffaloes to superovulative treatments with FSH was batter than with PMSG; mean number of CL was higher in swamp buffaloes to superovulative treatments with native FSH (3.75) compare with those with Folltropin^?-V (1.0), and the difference was significant (P<0.05); however, number of unovulated follicles in Folltropin?-V Group (6.75) more than those in native FSH Group (0.5) (P<0.05); the ovulated rate of swamp buffaloes which were superovulated with native FSH was higher than those were treated with Folltropin^?-V (88.24% vs 12.90%), and there was significant difference (P<0.05). Mean number of CL and unovulated follicles were higher in multiparous and cross bred buffaloes to superovulative treatments with CIDR+EB+ native FSH+ Folltropin^?-V (3.6 & 3.0) compare with those with CIDR+EB+ native FSH (1.25 & 1.0), and the difference was significant...