Effects of supplemental phytase on the mineral content in tibia of broilers fed different cereal based diets

J. Pintar, M. Bujan, B. Homen, K. Gazić, M. Sikirić and T. Černy
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J. Pintar: Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia
M. Bujan: Department of Chemistry, Faculty of Agriculture, University of Zagreb, Croatia
B. Homen: Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia
K. Gazić: Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia
M. Sikirić: Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia
T. Černy: Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia

Czech Journal of Animal Science, 2005, vol. 50, issue 2, 68-73

Abstract: A 21-day experiment with day-old broilers was conducted in order to assess the effect of phytase supplementation to cereal-soybean meal based diets on the mineral content in tibia (Ca, P, Fe, Mg, Cd, Zn). Diets were formulated to contain 4 different cereals (maize, wheat, triticale and barley), 2 levels of dietary calcium (0.6 and 1.0%) and 3 levels of supplemental phytase (0, 500 and 1 000 PU/kg). Supplemental phytase increased the mineral levels in tibia. A statistically significant increase was observed for Fe (P < 0.024) and Mg (P < 0.024), but not for Ca, P, Cd and Zn contents in tibia. In the case of Fe and Mg contents significant cereal × phytase interactions were also observed (P < 0.036 and 0.002, respectively). Cereals influenced the contents of Fe (P < 0.0001), Mg (P < 0.0001), Cd (P < 0.0001) and Zn (P < 0.003) while dietary calcium levels affected only calcium content (P < 0.008).

Keywords: maize; wheat; triticale; barley; phytase; mineral content in tibia; calcium; phosphorus; iron; magnesium; cadmium; zinc (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:50:y:2005:i:2:id:3997-cjas

DOI: 10.17221/3997-CJAS

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