NUTRITIONAL AND METABOLIC PARAMETERS IN LAYING HENS FED WITH DIFFERENT LEVELS OF CALCIUM, PHOSPHORUS AND PHYTASES

Published in Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3
Written by Roşu M., Sărăndan H., Violeta Turcuș, Sarandan M.

The experiment was made on a Lohmann Brown classic hybrid from 32 to 42 weeks of age. There were used feeds containing various levels of Ca, P or phytase: NC1 and NC2 were commercial recipes, NC3 was supplemented with Phyzyme (500 TFU/kg), NC4 was supplemented with monosodium phosphate and NC5 with dicalcium phosphate according to nutrient requirements (NRC 1998). There was tested the possibility to use the phytase included at a level of 0.12%nPP to make available enough phytic phosphorous to satisfy the birds requirements. (0.25% nPP). When included at a level of 500 FTU/kg feed, Phyzyme hydrolyzed 75% of the phytic phosphorous contributing to a 0.30% aP in the feed. The biological value of the phosphorous in NC3 was of 91.19% and it did not influence either the eggs production or the eggs’ quality.

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Roşu M., Sărăndan H., Turcuș V., Sarandan M. 2012, NUTRITIONAL AND METABOLIC PARAMETERS IN LAYING HENS FED WITH DIFFERENT LEVELS OF CALCIUM, PHOSPHORUS AND PHYTASES. Scientific Works. C Series. Veterinary Medicine, Vol. LVIII ISSUE 3, PRINT ISSN 1222-5304, 158-167.


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