EFFECT OF SUPPLEMENTING SODIUM AND POTASSIUM BICARBONATE ON MILK YIELD AND COMPOSITION AND SOME BLOOD PARAMETERS OF DAMASCUS GOATS UNDER HEAT STRESS

Abstract

Thirty tow Damascus goats were used in this study and carried out at the Ruminants researches station, State Board for Agricultural Researches, during the period from 1/6 to 12/7/2012 to study the effect of sodium and potassium bicarbonate on milk production, major milk composition and some blood parameters in Damascus goats under heat stress. The does were divided into four equal groups (8 does for each group), to receive one of four levels of NaHco3 and KHco3, namely 0 (T1), 1% NaHco3 (T2), 1% KHco3 (T3), and 1% NaHco3 + 1% KHco3 (T4). The experimental period was divided to tow stages, the first 2 weeks was adaptation stage and the last 3 weeks as experimental stage. Daily milk yield were recorded and milk samples for each does were taken every tow days for chemical analysis. Blood samples were taken in the last day of the experiment. A significant increases (P< 0.05) in milk yield and fat corrected milk (FCM) in T4 and T2 . No significant different in the fat, lactose, protein and solid not fat (SNF). No significant different in blood parameters. Indicate that the effect of sodium bicarbonate is beast than potassium bicarbonate on milk production. So, we suggest using 2% sodium bicarbonate instead of potassium bicarbonate as a source of bicarbonate.