جايگزيني اسيدآمينه گوگرددار (ميتونين ) با سولفات سديم در جيره حاوي چربي جوجه هاي گوشتي

Replacement of sulfur amino acid (Methionine) by sodium sulfate in fat containing diet of broiler chickens

Four hundred and eighty, day-old male and female broiler chickens (Arian breed) were obtained from a local commercial hatchery. Chicks were fed with eight different diets either with a standard or low methionone, five or zero percentage of fat and 0.1 or zero percentage of sodium sulfate content. Fat containing diets significantly (P<0.05) increased body weight gain and viability, in contrast it did not significantly affect cumulative feed conversion ratio. Sulfate containing diets, significantly (P<0.05) reduced feed conversion ratio and viability while did not significantly affect body weight gain. Cumulative body weight gain significantly (P<0.05) decreased, where total carcass protein and viability significantly (P<0.05) increased in chickens fed low methionine diet. Plasma sodium and triglyceride levels did not differ among treatments. The results of this experiment indicate that 18% of recommended methionine can be replaced with 0.1% of sodium sulfate. Finally, the recommended replaced methionine by the sulfate in combination with fat resulted higher body weight gain, better feed conversion ratio with no adverse effect on broiler performance.