Method for improving hybridization efficiency of water buffaloes

Abstract

The invention relates to the technical field of water buffalo breeding, and particularly relates to a method for improving the hybridization efficiency of water buffaloes. According to the invention,an artificial luteal phase is made by injecting a gonadotropin releasing hormone analogue into muscle, so that follicle maturation is inhibited; then chloroprostolis injected for dissolving functionalcorpus luteum, and the gonadotropin releasing hormone analogue is repeatedly injected into the muscle, so that female water buffaloes are oestrous after the injection; timely semen delivery and hybridization are carried out; an early-stage pregnancy test is carried out on the female water buffaloes in the 28th day after the hybridization, so that pregnant female water buffaloes and nonpregnant water buffaloes can be rapidly distinguished; and grouping management is carried out on the female water buffaloes. According to the method, two-time synchronization treatment and two-time hybridizationare continuously carried out on the same group of female water buffaloes, so that the conception rate of the group can be improved; and the early-stage pregnancy detection technology in the 28th dayis used for replacing a B-type ultrasonic pregnancy diagnosis technology in the 35th day, so that the hybridization waiting time of the female water buffaloes can be shortened, and the feeding cost ofthe female water buffaloes is reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of buffalo breeding, in particular to a method for improving breeding efficiency of buffaloes. 【Background technique】 [0002] Buffalo is a seasonal breeding animal, mainly distributed in tropical and subtropical regions. Its reproductive performance is easily affected by the environment and climate. Moreover, the female buffalo has a long estrus period and no obvious estrus symptoms. It is difficult for unskilled artificial insemination breeders to master timely insemination. The timing of semen results in a low fertilization rate. In the case of buffaloes in natural estrus, the fertilization rate of most artificial inseminations is about 30%-35%. In order to improve the breeding efficiency of buffaloes, at present, technicians in the industry use the simultaneous estrus technology for breeding. The application of the simultaneous estrus technology can reduce the consumption of manpower and material resou...

AI Technical Summary

Problems solved by technology

[0002] Buffalo is a seasonal breeding animal, mainly distributed in tropical and subtropical regions. Its reproductive performance is easily affected by the environment and climate. Moreover, the female buffalo has a long estrus period and no obvious estrus symptoms. It is difficult for unskilled artificial insemination breeders to master timely insemination. The timing of semen results in a lower conception rate of breeding. In the case of natural estrus of buffaloes, the conception rate of most artificial insemination breedings is about 30%-35%.

In order to improve the breeding efficiency of buffaloes, at present, technicians in the industry use the simultaneous estrus technology for breeding. The application of the simultaneous estrus technology can reduce the consumption of manpower and material resources, facilitate timely insemination, shorten the estrus and breeding time, and help improve artificial insemination. However, the current application of this technology still cannot maximize the efficiency of buffalo breeding. Conventional buffalo breeding can only pass the B-ultrasound pregnancy test 35 days to 60 days after breeding. On the 28th day, the early pregnancy test was carried out, and then the empty pregnant buffaloes were observed and mated, but there was no grouping of the pregnant buffaloes on the 28th day after mating, and the second estrus treatment and mating were performed on the empty pregnant buffaloes on the same day, which could not effectively shorten the mating of the empty pregnant buffaloes waiting time