SHORT COMMUNICATION
Degree of phytate conversion and type of phytase A modify production parameters and egg shell quality in laying hens
K. Żyła 1  
,   M. Mika 1,   J. Koreleski 2,   S. Świątkiewicz 2
 
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1
Agricultural University of Cracow, Department of Food Biotechnology, Al. 29-Listopada 46,31-425 Kraków, Poland
2
National Research Institute of Animal Production, Department of Animal Nutrition and Feed Science, 32-083 Balice, Poland
CORRESPONDING AUTHOR
K. Żyła   

Agricultural University of Cracow, Department of Food Biotechnology, Al. 29-Listopada 46,31-425 Kraków, Poland
Publication date: 2005-06-26
 
J. Anim. Feed Sci. 2005;14(Suppl. 1):515–518
 
KEYWORDS
ABSTRACT
At low levels of dietary calcium and phosphorus (2.8 and 0.36%, respectively), the degree of phytate conversion raised by adding phytase B to feeds that had already been supplemented with 3- or 6-phytase A, modulated production parameters, and egg shell quality of Hy Line Brown laying hens fed maize-soyabean meal from week 40 to 54. Feed consumption, laying rate, mean egg weight and shell breaking strength depended on the type of phytase A added to feeds only at a low phytate conversion degree. Egg production and feed per egg conversion ratio did not depend on the dietary supplements studied.
 
CITATIONS (1):
1.
Effects of inositol, inositol-generating phytase B applied alone, and in combination with 6-phytase A to phosphorus-deficient diets on laying performance, eggshell quality, yolk cholesterol, and fatty acid deposition in laying hens
K. Żyła, M. Mika, R. Duliński, S. Świątkiewicz, J. Koreleski, H. Pustkowiak, J. Piironen
Poultry Science
 
ISSN:1230-1388