Czech J. Anim. Sci., 2005, 50(2):68-73 | DOI: 10.17221/3997-CJAS

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

J. Pintar1, M. Bujan2, B. Homen1, K. Gaziæ1, M. Sikiriæ1,3, T. Èerny1
1 Department of Animal Nutrition, Faculty of Agriculture, University of Zagreb, Croatia
2 Department of Chemistry, Faculty of Agriculture, University of Zagreb, Croatia
3 Laboratory of Radiochemistry, Ruðer Bo¹koviæ Institute, Zagreb, Croatia

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

Published: February 28, 2005  Show citation

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Pintar J, Bujan M, Homen B, Gaziæ K, Sikiriæ M, Èerny T. Effects of supplemental phytase on the mineral content in tibia of broilers fed different cereal based diets. Czech J. Anim. Sci. 2005;50(2):68-73. doi: 10.17221/3997-CJAS.
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