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International Journal of Poultry Science
  Year: 2003 | Volume: 2 | Issue: 6 | Page No.: 417-420
DOI: 10.3923/ijps.2003.417.420
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Calcium Requirements of Bovanes Hens

Hafiz Anwar Ahmad, S.S. Yadalam and D.A. Roland Sr.

Calcium requirements of laying hens have been widely studied yet keep challenging nutritionists as a result of new genetic make-ups of commercial strains, farm management techniques, environmental concerns, and economics considerations. The present research was conducted to determine the calcium requirement of "Bovines" hens that represent about 17% of US layer industry. Increasing dietary level of calcium from 2.5 to 5.0% in hens` diets in increments of 0.5% had a significant positive linear effect on egg production and egg specific gravity. Increasing dietary calcium level from 2.5 to 5.0% increased egg production from 75.3 to 82.4% and egg specific gravity from 1.078 to 1.083 units. Calcium level had no effect on feed consumption or egg weight. "Bovines" hens required 5.57 g calcium/h/d for a maximum egg specific gravity index of 1.083 units (high shell quality). The decision to feed this level of calcium to achieve maximum shell quality however depends upon the nature and cost-benefits analysis of the layer operation.
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  •    The Effects of Microbial Phytase and Dietary Calcium Level on the Performance and Eggshell Quality in Laying Hens Fed Marginal Phosphorus Diets
How to cite this article:

Hafiz Anwar Ahmad, S.S. Yadalam and D.A. Roland Sr., 2003. Calcium Requirements of Bovanes Hens. International Journal of Poultry Science, 2: 417-420.

DOI: 10.3923/ijps.2003.417.420






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