Author(s)

Wei Wang, Zhiyue Wang, Haiming Yang, Yujuan Cao, Xiaochun Zhu

College of Animal Science and Technology, Yangzhou University, Yangzhou, China;.

The objective of this study was to investigate the effects of phytase supplementation on growth performance, slaughter performance, growth of internal organs and small intestine, and serum biochemical indices of broilers. A total of 360 1-day-old Ross 308 broilers were randomly divided into 4 groups with 3 replicates and 30 broilers per replicate (15 male, 15 female). The treatments were fed with basal diet supplemented with 0%, 0.01%, 0.02% and 0.03% phytase. The results showed that: 1) Phytase supplementation increased the body weight gain and the body weight of Ross 308 broilers (P < 0.05); 2) Compared with the control group, the feed containing 0.02% phytase increased the eviscerated carcass ration (P < 0.05); 3) The feed supplemented phytase could improve the weight of liver (P < 0.05); 4) The phytase supplementation was good for the weight and the length of small intestine; 5) The phytase supplementation which improved the serum phosphorus (P) consistency and lowered serum calcium (Ca) consistency was 0.02%. According to the above analysis, the feasible supplementation of phytase (enzyme activity for 5000 u/g) in broiler dietary was 0.02%.

Phytase; Performance; Internal Organs; Small Intestine; Serum Biochemical Parameters

Wang, W. , Wang, Z. , Yang, H. , Cao, Y. and Zhu, X. (2013) Effects of phytase supplementation on growth performance, slaughter performance, growth of internal organs and small intestine, and serum biochemical parameters of broilers. Open Journal of Animal Sciences, 3, 236-241. doi: 10.4236/ojas.2013.33035.