腐植酸钠对AA肉鸡屠宰性能及肌肉品质的影响  

Effects of Humic-acid Na on Slaughter Performance and Muscle Quality of AA Broilers

作　　者：龚争[1] 程郁昕[1] 张萌萌[1] 潘林林[1] 

机构地区：[1]安徽科技学院动物科学学院,安徽凤阳233100

出　　处：《安徽科技学院学报》2011年第2期5-8,共4页Journal of Anhui Science and Technology University

基　　金：安徽省科技厅年度重点项目(06023087C)

摘　　要：探讨腐植酸钠对AA肉鸡屠宰性能及肌肉品质的影响。方法:240只1日龄AA肉鸡,公母各半,随机等分4组,每组2个重复,每个重复30只。Ⅰ组为空白对照,饲喂基础日粮;Ⅱ、Ⅲ、Ⅳ组为试验处理,饲喂基础日粮并分别添加1.0g/kg、1.5 g/kg、2.5g/kg的腐植酸钠。42日龄每个重复随机抽取4只,测定屠宰率、半净膛率、全净膛率、胸肌率、腿肌率、腹脂率、瘦肉率及肌肉(胸肌、腿肌)色度、嫩度、失水率。结果:1)Ⅲ组的全净膛率显著(P<0.05)高于对照组,其余各指标各组间差异不显著(P>0.05)。2)Ⅱ组胸肌失水率显著大于对照组(P<0.05);各试验组腿肌失水率都极显著(P<0.01)大于对照组;其余各指标各组间无显著差异(P>0.05)。结论:1)AA肉鸡日粮中添加腐植酸钠可显著提高全净膛率(P<0.05),对屠宰率、半净膛率、胸肌率、腿肌率、腹脂率、瘦肉率均表现出一定的改善趋势。2)添加腐植酸钠对AA肉鸡肌肉品质有一定的负面影响。To probe the effects of Humic-acid Na（HANa） on the slaughter performance and the muscle quality of AA broilers.Methods：240 one-day-old AA broilers were randomly divided into 4 groups,there were 2 repetitions in every group and 30 AA broilers（15 cocks and 15 hens） in every repetition.Group Ⅰwas the control group,and AA broilers in it were fed the basal diet;groups Ⅱ,Ⅲ,and Ⅳ were experiment groups in which 1.0g/kg,1.5 g /kg,and 2.5g/kg HANa were added respectively beside the basal diet.At 42-day-old,4 broilers were randomly selected in every repetition,while dressing percentage,semi-besides the basal diet.eviscerated carcass weight rate,eviscerated carcass weight rate,breast muscle percentage,leg muscle percentage,belly fat percentage,and lean meat percentage were determined,and while chromaticity,tenderness,and losing water ratio of muscle（including breast muscle and leg muscle） were measured.Results：1） The eviscerated carcass weight rate of group Ⅲ was significantly high（P0.05） than that of the control group,as for other indexs,there were not significant differences（P0.05） among four groups.2） The losing water ratio of breast muscle of group Ⅱwas significantly high（P0.05） than that of the control group,the losing water ratios of leg muscles of groups Ⅱ,Ⅲ,and Ⅳ were very significantly high（P0.01） than that of the control group,and there were not significant differences（P0.05） among other groups.Conclusions：1） The eviscerated carcass weight rate of AA broilers was significantly increased（P0.05） by adding HANa in the basal diet,while the tendency to improve the dressing percentage,semi-eviscerated carcass weight rate,breast muscle percentage,leg muscle percentage,belly fat percentage,and lean meat percentage of AA broilers was showed.2） The effects of HANa on the muscle quality of AA broilers were negative.

关 键 词：腐植酸钠 AA肉鸡 屠宰性能 色度 嫩度 失水率 

分 类 号：S831.5[农业科学—畜牧学]