Dutta, L. J.Deori, Dipika2022-06-272022-06-272022-01https://krishikosh.egranth.ac.in/handle/1/5810184779Zinc is considered to be an essential element required for reproduction. Nanotechnology to produce nano size zinc with their novel properties as large surface area, higher bioavailability, better absorption has been an effective alteration for both organic and inorganic zinc sources. A study was conducted with a primary objectives of evaluating the efficiency of nano zinc (NZn) as feed supplementation on reproductive performance and to extrapolate fertility associated blood biochemical and hormonal profiles of Assam Hill Goat. Twenty-four numbers of 7 days post kidding doe maintained at Goat Research Station, Assam Agricultural University, Burnihat were randomly selected into 4 groups comprising 6 animals each where control group of animals were fed with basal diet without zinc supplementation, for treatment 1 group 25mg NZn, for treatment 2 group 35 mg NZn and for treatment 3 group 50 mg NZn/kg concentrate mixture with basal diet were fed for a period of three months. Blood was collected from each does upto 3 months before treatment, every fortnightly and on the day of oestrus. Does were bred naturally at 24 hours from the onset of oestrus and confirmed for pregnancy after two months. Results indicated that supplementation of different doses of nano zinc significantly (P0.05) among the groups. Supplementation of nano zinc had no effect (P>0.05) on haematological parameter viz. PCV (%), haemoglobin (g/dL), RBC (106/μl) and WBC (103/μl). However, among other biochemical parameter studied, serum zinc level varied significantly (P0.05) among the group. Hence, zinc supplementation in the form of nano zinc improved the reproductive performance by shortening the interval between kidding and first post partum oestrus and conception rate without much affecting the other reproductive parameter in Assam Hill goats.EnglishThesis