Efficacy of an evolved Escherichia coli phytase in diets of broiler chicks
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Date
2005Author
Adeola, O
Bedford, MR,
Onyango, EM,
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
An evolved Escherichia coli-derived phytase was evaluated for its efficacy in improving growth performance and nutrient utilization of broiler chicks. One hundred forty-four 7-d-old male broiler chicks were grouped by weight into 6 blocks of 6 cages with 4 birds per cage. Six corn-soybean meal-based mash diets were randomly assigned to cages within each block. The 6 diets were adequate P (7.7 g of P/kg of diet), low P (3.9 g of P/kg of diet), low P diet plus 0.75 or 1.5 g of inorganic P from monosodium phosphate, and low P diet plus the evolved Escherichia coli phytase at 500 or 1,000 units/kg of diet. The chicks were fed the experimental diets from 8 to 22 d of age. The evolved Escherichia coli phytase improved weight gain (P < 0.05), feed intake (P < 0.01), percentage tibia ash (P < 0.01), and retention of P (P < 0.001), Ca (P < 0.01), N (P < 0.05), and a number of amino acids (P < 0.05). The evolved Escherichia coli phytase was, therefore, efficacious in improving broiler growth performance, bone characteristics, and retention of P, Ca, N, and a number of amino acids.
URI
http://www.ncbi.nlm.nih.gov/pubmed/15742961http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/32809
Citation
Poult Sci. 2005 Feb;84(2):248-5Publisher
Department of Animal Sciences, Purdue University, West Lafayette, Indiana 47907, USA.
Collections
- Faculty of Health Sciences (FHS) [10377]