Using enzyme supplemented, reduced protein diets to decrease nitrogen and phosphorus excretion of White Leghorn hens
- Authors
- Jacob, JP; Ibrahim, S; Blair, R; Namkung, H; Paik, IK
- Issue Date
- Dec-2000
- Publisher
- ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOCIETIES
- Keywords
- layer; enzymes; phytase; beta-glucanase; dietary protein; egg; nitrogen; phosphorus
- Citation
- ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, v.13, no.12, pp 1743 - 1749
- Pages
- 7
- Journal Title
- ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
- Volume
- 13
- Number
- 12
- Start Page
- 1743
- End Page
- 1749
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47339
- DOI
- 10.5713/ajas.2000.1743
- ISSN
- 1011-2367
1976-5517
- Abstract
- An experiment was conducted to investigate the effect of supplementation of commercial phytase and beta -glucanase to wheat-soybean meal based layer diets. Control (17% CP) and reduced protein (13.5% CP) diets were compared with and without phytase and/or beta -glucanase. Reducing dietary crude protein levels reduced the amount of N excreted by laying hens with no adverse affect an egg production or overall feed conversion ratio. There was, however, a slight reduction in average egg weight. When phytase was added to the control protein diets it was possible to reduce the level of dicalcium phosphate in the diet without a loss in performance and daily P output was reduced significantly. When phytase was added to the reduced protein diets, however, there was a dramatic loss in performance in the last four weeks of the study. Supplementation of beta -glucanase to wheat based layer diet did not appear to have beneficial affects in terms of laying performance and reducing nitrogen or phosphorus excretion. Combination of phytase and beta -glucanase had no positive effects on laying performance or reduction of DM, N and P.
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