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Pakistan Journal of Biological Sciences
  Year: 2008 | Volume: 11 | Issue: 18 | Page No.: 2286-2288
DOI: 10.3923/pjbs.2008.2286.2288
 
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Performance and Egg Quality of Laying Hens Affected by Different Sources of Phytase

A. Ahmadi, M.M. Tabatabaei, H. Aliarabi, A.A. Saki and S.A. Hosseini Siyar

Abstract:
Ninety hens were divided into six groups as a 2x3 factorial design and fed diets containing Wheat Bran (WB) at two levels of 0 and 5% and the enzyme phytase at three levels of 0, 150 and 300 FTU kg-1. Egg weight, egg production, feed intake and Feed Conversion Ratio (FCR) were determined. Eggs were collected on two consecutive days at fortnightly intervals to measure egg size and egg component weights. Shell thickness was measured. Egg production, egg weight, FCR and feed intake were not affected by WB. Egg production, egg weight and feed intake were significantly higher in phytase-supplemented groups than unsupplemented groups. FCR differed significantly between dietary treatments as phytase supplementation significantly decreased FCR. Inclusion of WB to the diets had no effect on egg size and albumen weight. Phytase supplementation did not affect yolk weight, although albumen and shell weight were significantly affected.
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  •    Performance, Egg Quality and Mineral Utilization of Dokki-4 Laying Hens Fed Diets Containing Three Levels of Nonphytate Phosphorus in Absence or Presence of Microbial Phytase, Citric Acid or Both
How to cite this article:

A. Ahmadi, M.M. Tabatabaei, H. Aliarabi, A.A. Saki and S.A. Hosseini Siyar, 2008. Performance and Egg Quality of Laying Hens Affected by Different Sources of Phytase. Pakistan Journal of Biological Sciences, 11: 2286-2288.

DOI: 10.3923/pjbs.2008.2286.2288

URL: https://scialert.net/abstract/?doi=pjbs.2008.2286.2288

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