Pathak, M. M.Tiwari, Shailendra R.2018-07-052018-07-051989http://krishikosh.egranth.ac.in/handle/1/5810057201After calving, 12 primiparous Surti buffaloes were equally divided into two groups; SJCkled and non suckled to study the effect of suckling on post-partum reproductive performance along with blood profile, Post-partum performance included placental expulsion time, weight of placenta, regression of pregnancy corpus luteum, initiation of follicular activity, uterine involution, first heat post-partum postpartum breeding, number of services per conception and senrice period. For blood profile, blood saraplinir was done by tapping . the jugular vein every alternate day from calving to first heat post-partum in addition to first three collections; immediately after calving, immediately after first milking/ suckling and immediately after placental expulsion. Totally 293 samples were analused for blood serum characteristics. The characteristics studied for blood serum were progesterone, estradiol-l7 B, testosterone, triiodothyronine and thyroxine as hortnoncs and total protein, cholesterol (total, free and ester) , alkaline phosphatase, calciuns, phosphorus and copper as biochemical parameters.enREPRODUCTIVE BIOLOGYA STUDYThesis