تاثیر پپتیدهای استخراج شده از کازئین بر عملکرد، ویژگی های لاشه و خاصیت آنتی اکسیدانی گوشت سینه جوجه های گوشتی

This research was conducted in order to investigate the effect of peptides extracted from casein on performance, carcass characteristics and antioxidant properties of breast meat on ۳۵۰ male broiler chicks in a completely randomized design with ۷ treatments, ۵ replications and ۱۰ birds in each replicate. Treatments included: ۱) basic diet without additives (control), ۲) basic diet + Avilamycin antibiotic and basic diet + levels of ۲۰۰ to ۱۰۰۰ mg/kg peptide. The results showed that the use of peptides period had not significant effect on feed intake in any periods of the experiment. Effect of peptides on body weight gain and feed conversion ratio in starter period was not significant. In grower, treatments containing ۶۰۰, ۸۰۰ and ۱۰۰۰ and in finisher and whole periods use of ۸۰۰ and ۱۰۰۰ mg peptides increased body weight gain in compared to control treatment (P<۰.۰۵). Adding peptides also improved feed conversion ratio in grower, finisher and whole periods of the experiment. Use of ۶۰۰, ۸۰۰ and ۱۰۰۰ mg peptides decreased abdominal fat and increased heart percentage (P<۰.۰۵). Small intestine, duodenum, jejunum and ileum percentage in treatments supplemented with peptides significantly reduced (P<۰.۰۵). Use of peptides derived from casein improved the antioxidant properties of chicken breast meat (P<۰.۰۵). In conclusion, the results of the present study showed that use of  peptides derived from casein improved performance, decreased abdominal fat, small intestine percentages and increased breast meat stability in broiler chicks.

Keywords:

افزایش وزن , پپتید زیستفعال , پرنده , فعالیت آنتیاکسیدانی , مصرف خوراک