Journal of Food, Agriculture and Environment

Vol 9, Issue 1,2011
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Effects of KDN phytase on the performance and Ca and P metabolism of broilers fed low phosphorus diets


Peng Ying 1, 2#, Wence Wang 1#*, Weigang Duan 3*, Francois Blachier 6, Shu Xu-gang 4, Yunchao Wang 3, Mingzhe Fan 5, Jie Pan 3

Recieved Date: 2010-10-20, Accepted Date: 2011-01-12


An experiment was carried out to study the effects of phytase on the performance and calcium (Ca) and phosphorus (P) metabolism of AA broilers by supplementing phytase in low P diets. The basal diet (A) contained 0.41% of available P and diets B, C and D contained 0.26, 0.34 and 0.34, respectively. Phytase (U/kg) was supplemented to Diets B, C and D at 500, 500 and 250, respectively. Each diet was allocated to 6 replicates of 24 birds each. Two phases of feeding program were applied and the broilers were fed with different treatment diets at 0-21 d and 22-42 d. No significant difference was observed on average daily gain (ADG), feed/gain ratio (F/G) and daily feed intake (DFI) (P>0.05) of the treatment groups and on the occurrence of leg diseases. Phosphate excretion of broilers in groups B, C and D decreased by 26.7% (P<0.05), 24.0% (P<0.05) and 20.6% (P>0.05), respectively. No significant difference (P>0.05) was observed on length of tibia, ash content and Ca and P content in ash, but there was a significant reduction in tibia weight and strength in group B. There was no significant difference (P>0.05) in serum Ca, P and alkaline phosphatase among all the treatment groups.


Phytase, broiler, performance, Ca and P metabolism

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 1
Category: Agriculture
Pages: 348-352

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