كليدواژه :
dietary electrolyte balance , Ideal protein , Performance , Broiler , پروتيين ايده آل , تعادل الكتروليت ها , عملكرد جوجه هاي گوشتي
چكيده لاتين :
The effects of 2 levels of crude protein (CP) on ideal protein basis (19.00, 23.00%) in starter, and (17.65, 20.65%) in grower period and 3 levels of dietary electrolyte balance (DEB) (210, 255, 300 meqlkg diet) on performance, body composition, and blood serum electrolyte (Na, K, Cl) were investigated on 1800 male and female broiler chicks. Diets were fed to chicks in 2 phases (0-21 and 21-35 days). The effects of diets on weight gain, feed consumption, gain to feed ratio, mortality percentage, breast meat yield and percentage, body composition (dry matter, carcass protein, fat, and ash), tibia ash, blood serum electrolyte and serum PH were measured. The results indicated that with increasing CP level, body weight gain, feed consumption, gain to feed ratio in starter, grower and total period of experiment significantly improved (P<0.05). It also increased breast meat yield and percentage (P<0.05). With increasing CP level carcass fat percentage decreased and carcass protein increased (P<0.05). Male bic iler had better performance and breast meat yield and percentage than female (P<0.05). Increasing DEB increased weight gain in starter and feed consumption in grower period (P<0.05), but hadnʹt any effect on performance and litter quality in total period. It also decreased serum potassium significantly (P<0.05). There werenʹt significant difference among treatments for tibia ash percentage.
