The Effect of Saccharomyces cerevisiae Yeast Enriched with Selenium and Zinc on Some Physiological Traits and Milk Production of Female Shami Goats

Background: Milk production is one of the most important goals pursued by breeders milk-producing farm animals World Wide. Goats are these animals. This study sought to compare effect Saccharomyces cerevisiae yeast (SCY) with or without Selenium and zinc on milk yield nutritional composition hormones related. Methods: Twenty four female Shami goats distributed into 4 equal groups (6 /group) control group (C) fed standard concentrated diet adding, T2(SCY) animal dosed S.Cerevisiae at a concentration 0.2 g/kg body weight, T3 (Se + Zn) was 0.3 respectively, T4 (SCY+Sc +Zn) represented dosing their an 0.2g/kg weight selenium added ratio same as T3. Result: there significant increase (P≤0.05) in in-milk production, solid-to-fat ratio, density protein level (SCY+ Sc+Zn) among transactions, also Sc+ highlighted prolactin, thyroxine cortisol accompanied decrease estrogen triiodothyronine levels compared all treated groups.