There is a significant importance that the dietary additive Rumen-Protected Choline has on productive and reproductive performance and physiological body functions in male and female goats. Dietary RPC is required at the rate of 20 g daily for optimal growth of growing Zaraibi goats, especially, under heat stress conditions of summer season in Egypt and showed the best results concerning the growth, feed conversion, blood metabolites and economic efficiency. RPC supplementation at the rate of 20 g daily in the diets of female goats give the maximum productive and reproductive performance and at the same time, give the best growth performance and viability rate of their suckling kids during suckling period.