Paper Title:
Interaction of Dietary Zinc and Vitamin A Influences the Zinc Deposition and some Enzymes` Activity in Broilers
  Abstract

576 broilers are experimented on with 6 × 2 (Zn × vitamin A) repetitive experiment in attempt to study the influence of different dietary zinc levels (40,80 ,120 ,160 ,200 and 320 mg/ kg) and dietary vitamin A levels (2700 and 8800 IU/ kg) on vitamin A metabolism, zinc concentration in liver and tibia, zinc apparent deposition rate, serum ALK activity, CuZn-SOD activity in liver and serum, and serum insulin concentration. Results showed that vitamin A concentration in serum increased with the increasing of zinc level in the diet, and that in livers decreased accordingly, which means that zinc can mobilize vitamin A of liver into serum. When dietary zinc level was 320 mg/kg, vitamin A concentration in serum, liver and kidney increased at the same time, perhaps higher dietary zinc level promoted vitamin A absorption except for mobilizing it into serum. Higher dietary vitamin A level (8800 IU/kg) increased zinc concentration in liver and tibia slightly. Zinc apparent deposition rate increased with the increasing of dietary zinc level within certain range and then decreased.;dietary Zinc level has a prominent influence on CuZn – SOD in serum when P < 0. 01; and the result also shows that dietary zinc level, vitamin A level and their interaction has a respectively prominent influence on ALK, serum insulin concentration is also apparently affected.

  Info
Periodical
Advanced Materials Research (Volumes 343-344)
Chapter
Session 3: Biology-Related Materials Research in Environmental Protection
Edited by
David Wang
Pages
1126-1132
DOI
10.4028/www.scientific.net/AMR.343-344.1126
Citation
X. M. Guan, F. L. Bian, W. J. Zhu, B. Wang, C. S. Zhang, "Interaction of Dietary Zinc and Vitamin A Influences the Zinc Deposition and some Enzymes` Activity in Broilers", Advanced Materials Research, Vols. 343-344, pp. 1126-1132, 2012
Online since
September 2011
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Price
$32.00
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