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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2013 > Volume 12 Number 8 > Y.P. Chen, W.G. Duan, L.L. Wang, S.L. Zhang and Y.M. Zhou

Effects of Thermostable Phytase Supplementation on the Growth Performance and Nutrient Digestibility of Broilers

Y.P. Chen, W.G. Duan, L.L. Wang, S.L. Zhang and Y.M. Zhou
College of Animal Science and Technology, Nanjing Agricultural University, 1 Nanjing, Jiangsu, People’s of Republic China Animal Metabolism Laboratory of KDN Biotech Group, Qingdao, Shandong, People’s of Republic China
Abstract :

A study was conducted to investigate the effects of thermostable phytase supplementation on the growth performance and nutrient digestibility of broilers for 42 d. 1-day-old Arbor Acres chicks with similar initial body weight were randomly divided into 3 treatments consisting 6 pens of 20 chicks per pen. The control group was given maize-soybean meal basal diet and the other two groups were fed the basal diet including either 500 U ordinary phytase/kg diet or 500 U thermostable phytase/kg diet. The results indicated that broilers given diets supplemented with thermostable phytase have increased body weight, body weight gain and feed intake than these fed basal diet (p<0.05). However, the same effect was only noted for body weight in ordinary phytase-supplemented group (p<0.05). Birds fed diet supplemented with thermostable phytase had enhanced crude protein utilization when compared with these given basal diet (p<0.05) but the same effect was not observed for broilers fed ordinary phytase-supplemented diet. As expected, dietary phytase supplementation significantly enhanced nitrogen-corrected apparent metabolizable energy of broilers (p<0.05) and this effect was more pronounced in the thermostable phytase-supplemented group. The results suggested that phytase supplementation, especially thermostable phytase supplementation, can improve the growth performance and nutrient utilization of broilers.

Keywords :
Thermostable phytase, growth performance, nutrient digestibility, broilers

Date Deposited : 18 Mar 2015 12:03

Last Modified : 18 Mar 2015 12:03

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Volume 12, Number 8, - 2013 , ISSN 1682-8356

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