INFLUENCE OF IRON AND COPPER ON BIOLOGICAL RESPONSE TO EXCESS DIETARY ZINC IN CHICK
- VernacularTitle:铁、铜对过量锌饲养小鸡生物效应的影响
- Author:
Jinsong LI
;
Xunxian WU
- Publication Type:Journal Article
- Keywords:
iron copper zinc chick
- From:
Acta Nutrimenta Sinica
1956;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
A biological study was made to estimate the influence of excess dietary zinc, in vivo, on iron and copper status and their antagonism. Chicks were randomly divided into four groups (n= 22 each) according to body weight and were fed on experimental diet with different amounts of zinc, iron and copper for 28 days. The results were as follows; 1. Excess dietary zinc (400ppm) caused retardation of growth rate in experimental chicks, hypochromic anemia, elevation of blood and tissues (liver, kidney) zinc levels and lowering iron, copper and ceruloplasmin content,and eryth-rocyte Cu-Zn-superoxide dismutase activity; 2. Copper alone supplemented up to 40ppm to the excess zinc diet was able to improve the growth rate, body copper status and Cu-Za-superoxide dismutase activity, but no effect on anemia and body iron status; 3. Iron and copper were supplemented up to 400ppm and 40ppm respectively to excess zinc diet at same time, all the parameters were similar to the chicks fed basal diet. These data suggested that supplement of iron and copper at proper proportion to excess zinc diet can prevent the adverse effects of excess zinc on chicks.
