VEENA, M. P2019-07-052019-07-052007http://krishikosh.egranth.ac.in/handle/1/5810112619Reproductive efficiency of a female is assessed by its ability to produce a viable offspring at the expected intervals. The postpartum period is a vulnerable period for diseases in the reproductive life of the female (Swanson, 1989). In farm animals, the postpartum period terminates with the exhibition of first postpartum estrus at which the pregnancy can be established. By this time the hypothalamo hypophysial-gonadal axis is expected to assume normal function so as to permit estrus, ovulation, conception, corpus luteum (CL) maintenance and pregnancy.Thesis