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The influence of dietary zinc content on mechanical properties of chicken tibiotarsal bone

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Author(s): Štofaníková Jana | Šály J. | Molnár L. | Sesztáková Edina | Bílek J.

Journal: Acta Veterinaria
ISSN 0567-8315

Volume: 61;
Issue: 5-6;
Start page: 531;
Date: 2011;
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Keywords: bone | broiler | mechanical properties | three point bending test | zinc

ABSTRACT
The authors evaluated the effect of diets with different Zn levels on mechanical properties of bones in 60 Ross 308 hybrid broilers, from 2 to 35 days of age, which were randomly divided in 2 groups, with 30 chickens each. The first group (Zn50) was fed a commercial basal diet with no Zn additives (zinc content - 50 mg/kg feed). The second group (Zn100) was fed the basal diet + 50 mg of Zn/kg feed. In this group the dietary Zn level was increased by adding 62.23 mg of zinc oxide (ZnO)/kg feed to starter and grower feeds. In group Zn100 compared to Zn50 the values of blood zinc level were significantly higher on days 7 and 35 (p
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