EFFECT OF BREEDING METHOD ON CALF SEX AND POSTPARTUM REPRODUCTIVE PERFORMANCE OF CATTLE AND BUFFALOES

摘要: Successful farmers produce almost one calf per animal annually through n atural and artificial mating in Pakistan. The Present study investigate dthe effect of method on sex postpartum re productive performance (PPRP) incross bred cattle buffalo. Data on1591animals including795 crossbred 796 buffaloes were analyzed SPSS 11. results revealed overall 55 % male births the buffalo population. Among reprod uctive traits had significantly (P <0.01) higher incidence assisted (24 vs 14 %), service periods (40.89 38.75 days) number services conception (1.42 1.21). Breeding significant ratio. Male b irths as a result insemination (59 51 %) compared to natural (NS).Among PPRP indicators was (23 15 AI N S. Similarly retained fetal membrane also resulted from (10 5 %). Service period (44.25 35.40 days)and (1.43 1.14)were animals serv ed AI. Calf affected it prolonged which gave birth calves. Number positive correlation with possibility RFM (r 0.094) se rvice 0.088). suggested that weremore prone reproductive problems andAI high frequency Post partum lower asa mating.