Comparative Study of Concentration of Some Minerals in Milk and Blood Plasma of Sheep and Goats Native and Foreign During Post-Partum Period under Climatic Conditions of Upper Egypt

Abstract

The present study aimed to determine concentrations of sodium, potassium, copper and zinc in milk and blood plasma of Awassi, Baladi ewes and Boer, Baladi goats during the winter and summer seasons. Used in this experiment number of 180 ewes and goats. The blood and milk samples were taken after one month post partum. The samples were stored at-18 ºC till time of analysis. The minerals were determined by Atomic Absorption Spectrophotometer used to estimate copper and zinc and Flame Emission Photometry was used for estimation of sodium and potassium. The overall concentrations of (sodium, potassium, copper and zinc) in milk of Awassi and Baladi ewes were (