Iraqi Journal of Veterinary Sciences

Abstract

The current study was aimed to investigate the influence of Vitamin A- Palmitate injection and grazing on some physiological and biochemical characters, milk yield and its compositions. Twenty eight Meriz does (2 years aged) after parturition with average body weight 22.57 ± 0.47 Kg, and were randomly assigned into 4 groups (7 does/group) treated for 3 months as following: 1^st group does were reared on standard ration and injected with 0.05 ml of physiological saline i.m weekly, 2^nd and 4th groups, does were reared on standard ration and injected with vitamin A- Palmitate (50000 IU/doe weekly) as well as grazing for 6 hrs. daily for the does in 4^th group, 3rd group does were reared on standard ration with 6hrs grazing /daily. Results showed a significant increase in Hb and PCV in 4^th group at 1^st, 2^nd and 3^rd month of treatment. ESR significantly increased in 4^th group at 3^rd month of treatment, also serum glucose level increased significantly in 2^nd and 4^th groups at all months of the study, while serum cholesterol level decreased significantly in 4^th group at 2^nd and 3^rd months of treatment. Triglyceride increased at 3^rd month in all treatments as compared with control, total protein and albumin increased significantly in 2^nd, 3^rd and 4^th groups at 2^nd and 3^rd months of treatment. A significant increase in milk yield and fat% were recorded in 2^nd, 3^rd and 4^th treatments in most kidding weeks. Conclusion, results showed that vitamin A and grazing improved some of physiological, biochemical, body weight and milk yield in Meriz goats.