不同形态微量元素对肉鸡生产、屠宰性能和血清酶活性的影响

试验探讨肉仔鸡日粮中添加不同形态的微量元素对其生产性能、屠宰性能、血清酶活性的影响.试验分为全无机、全有机、有机和无机各半3个试验组.试验结果表明,在肉仔鸡生长前期（1～21日龄）,全有机组生产性能优于全无机组（P＞0.05）,从后期和全期来看,全有机组生产性能优于无机组（P＞0.05）;有机组腹脂率和腹脂厚度分别比无机组降低7.55％和11.64％ （P＞0.05）.与无机组相比,有机组腿肌率显著提高22.07％ （P＜0.05）;有机组有提高胫骨长度和宽度的趋势（P＞0.05）,有机组有提高血清碱性磷酸酶和5＇-核苷酸酶活性,并有降低血清尿素氮的趋势（P＞0.05）.由此可见,有机微量元素可以提高肉鸡的生产性能,对肉鸡屠宰性能、血清酶活和尿素氮方面有一定影响.

Effect of Different Forms of Trace Elements on Production Performance,Slaughtering Performance and Serum Enzyme Activity in Broilers

The experiment studied the comparison of different composition of trace element forms on productiv- ity, slaughter performance, serum enzyme activity in broilers. The experiment was designed with three treatments, in- cluding inorganic trace mineral group（ITM）, chelated trace mineral group（CTM） and one-half of inorganic and che- lated trace mineral group（ITM＋CTM） individually. The results showed that the growth performance of broilers with CTM was better than ITM slightly（P〉0.05）. The broilers in CTM group was decreased by 7.55% and 11.64% than ITM group on the abdominal fat and subcutaneous fat respectively （P〉0.05）, and could increase 22.07% of leg mus- cle significantly（P〈0.05）. The length and width of the tibia tended to increase in the broilers fed CTM（P〉0.05）. Com- pared with ITM treatment, the CTM group can increase serum alkaline phosphatase and 5＇-nucleotidase activity, and also had a tendency of decreasing the content of serum urea nitrogen（P〉0.05）. Consequently, using the composition of CTM can improve the production performance, effect slaughter performance, blood urea nitrogen and serum en- zyme activity in broilers.