Vol. 9, Issue 1, Part G (2024)

Author(s): Garima Choudhary, U Pannu and GC Gahlot

Abstract: The study sampled 91 Tharparkar cattle reared at Buchwald Livestock Research Station in Bikaner over a period of 11years, i.e. from 2006 to 2016. The data was analyzed to evaluate the performance of reproductive traits of Tharparkar cattle and study the effect Genetic and non-genetic factors (e.g. season and period of calving). The total least squares average of age at first calving (AFC), first service period (FSP) and first calving interval (FCI) are 1510.88 ± 22.29 days, 149.66 ± 5.15 days and 423.60 ± 6.23, respectively. This study found that the sire has a significant impact on the traits of the first lactation. While calving period had a significant effect on AFC and FCI, calving season had no significant effect on first lactation reproductive traits.