The Application Study On Complex Amino Acid Chelated Iron, Copper, Manganese, Zinc In Broiler Production

Three hundred one-day-old avian broiler whose body weights were near consistent and healthy were selected, and were divided into 5 disposes randomly, 3 repeats in each dispose. Adopting single factor to compare the effect of complex amino acid trace element chelated (Fe, Cu, Mn, Zn) on production performance, death rate and disease occur rate in leg of broiler when it was added with high Cu (Cu 250 mg/kg) level, 1 times NRC level, 0. 5 times NRC level, 0 level (neither use chelated nor sulphated) and 1 times NRC level as sulphate. The results showed that:The complex amino acid trace element chelated added with 0. 5 times NRC level improve the production performance of broiler prominently. Compared with high Cu level dispose, the weight gain of broiler were increased 4. 72%(P<0.01) and feed intake of broiler were increased 8. 98%(P<0. 01). Compared with sulphate dispose, disease occur rate of the broiler leg was reduced 1.0 times and death rate of the broiler was reduced 2. 0 times. The complex amino acid trace element chelated was more propitious to the increase feed conversion of broiler than sulphate dispose or 0 level dispose, increasing feed conversion averaged more 4%(P<0.05). But the complex amino acid trace element chelated was adverse to advance growth of broiler when added with high Cu level, and its effect was lower than the two disposes.The results of the test showed that: The model of high Cu advance the growth of swine were not the same with broiler when added with complex amino acid trace element chelated. The low level (0.5 times NRC level) was more propitious to exert nutrition domino effect action.