Effect of Different Lys Level Diet on Growth Performance and Blood Biochemical Indexes of 0~6 Weeks Wuding Chicken

In order to study the effect of diet with different Lys levels on growth performance and blood biochemical indexes on 0~6 weeks Wuding chicken,5 groups whose Lys level 0.6%, 0.8%, 1.0%, 1.2% and 1.4% were set based on single factor design and randomly assortment. Each group 3 repeats and each repeat 6 birds, energy and protein level were set 12.6 MJ/kg and 19.35%. The results showed that: different Lys levels had significant impact on daily gain, daily feed intake, gain rate and the final weight(P0.05); a quadratic curve of which correlation coefficient was 0.99 and 0.96 respectively, was matched by Lys level with weight and gain rate; there were no significant effect between Lys and ALT/GPT, AST/GOT and blood urea nitrogen(P0.05), but a remarkable effect on blood uric acid (P0.05) was found. Over all, measured with total gain and gain rate, the Lys levels were 1.03% and 1.02% when 0~6 weeks Wuding chicken got the best growth performance.