Data pertaining to 1091 lactation records of Surti buffaloes sired by 43 bulls were used for the present study. The effect of period of calving and sire were found significant on intrauterine development index (IUDI) while season of calving and parity was non-significant. The heritability estimates for IUDI was 0.157±0.06. The genetic and phenotypic association of IUDI with production traits were positive and low to moderate the phenotypic correlation among IUDI and MY/LL was positive and non-significant while genetic correlation of there traits was high and positive. The environmental correlations of IUDI with production and efficiency traits were low and negative.
Surti Buffaloes, Intrauterine development index, Production and efficiency traits, Prenatal growth, Gestation period, Birth weight
