延胡索酸替代饲用抗生素对黄羽肉鸡屠宰性能的影响

Effect of Substitution of Feed Additive Antibiotic with Fumaric Acid on Slaughter Performance of Yellow-feathered Broiler

[目的]在基础日粮中添加适量延胡索酸,对比其替代饲用抗生素对黄羽肉鸡屠宰性能的影响。[方法]将90只1日龄黄羽肉鸡,随机分成3个处理组,每组设3个重复。其中,阴性对照组试验鸡只饲喂基础日粮,不添加任何抗生素成分;阳性对照组在基础饲粮中添加饲用抗生素;试验组在基础饲粮中添加2 g/kg延胡索酸。试验鸡试验全程饲养管理条件相同。饲养至79 d时,每个重复中随机选取1只试验鸡,称重后屠宰,按常规屠宰率测定方法测定其屠宰率、半净膛率、全净膛率。[结果]试验组黄羽肉鸡在79日龄时屠宰率、半净膛率优于2个对照组(P>0.05);全净膛率显著(P<0.05)高于2个对照组。[结论]在该试验条件下,在基础饲粮中添加2 g/kg的延胡索酸替代饲用抗生素,对黄羽肉鸡的屠宰性能有较好的效果。

[Objective]To assess the effect of dietary supplementation of fumaric acid on slaughter performance of yellow-feathered broiler and to make a comparison with that of feed additive antibiotic. [Method]A total of 90 one-day-old yellow-feathered broilers were included in this study and were randomly assigned to one of three groups with 3 repeats for each group such that negative control group fed basal diet with no antibiotic, positive control group fed basal diet with antibiotic, experimental group fed basal diet containing 2 g/kg fumaric acid. The broilers were reared under the same breeding and management condition.At 79 days of age, one broiler was selected from each repeat. The chosen broilers were weighted and slaughtered, and the dressing percentage, half eviscerated rate and total eviscerated rate was determined. [Results]The experimental group had higher dressing percentage and half eviscerated rate（P〉0.05） as well as significantly higher total eviscerated rate（P〈0.05） than the two control groups. [Conclusion]Dietary supplementation of 2 g/kg fumaric acid improved the slaughter performance of yellow-feathered broiler and exhibited better performance than feed additive antibiotic.