摘要
试验选择健康、体重相近1日龄AA肉仔鸡384羽(公母各半),公母分开饲养,公母各设4个处理,每个处理4个重复,每重复12羽。处理Ⅰ为对照组,饲喂基础日粮,处理Ⅱ、Ⅲ、Ⅳ组为β-甘露聚糖酶添加组,在基础日粮的基础上分别添加0.03%、0.06%、0.1%的β-甘露聚糖酶。试验期为6周,测定肉鸡免疫机能指标。结果表明,日粮中添加不同水平的β-甘露聚糖酶对肉鸡免疫器官指数没有显著影响,性别因素对其也无影响。而日粮中添加不同水平的β-甘露聚糖酶可以提高肉鸡血清中IgA、IgG的含量,而性别因素对其无影响。与对照组相比,Ⅱ、Ⅲ、Ⅳ组IgA含量分别提高了17.14%(P<0.05)、51.43%(P<0.01)和34.28%(P<0.01);IgG含量分别提高了23.96%(P<0.05)、36.28%(P<0.01)和28.99%(P<0.01),但对血清IgM含量没有显著影响。综合考虑,在本试验设计的添加范围内,添加水平为0.06%时,血清IgA、IgG含量最高。
This test regarded AA broilers as the test animals,studied the effect of β-mannanase adding into the basal diets at different levels and the sex factor on its immunity function. 384 1-day-old AA broilers were divided from 192 female and 192 male broilers, male and female was assigned randomly into 4 groups with 4 replicate set with 12 broilers per replicate for a 42-day trail respectively. Group Ⅰ was fed with basal diet without β-mannanase, Group Ⅱ, Ⅲ, Ⅳ were fed with basal diets adding 0.03%, 0.06% ,0.1% β-mannanase. The parameter of immune function were determined. The results were showed as follows： The β-mannanase adding into basal diets at different levels has no remarkably influence to the immunity organ index, and the sex factor has no influence to the immunity organ index. The β-mannanase adding into basal diets at different levels can enhance the serum IgA, IgG content, but the sex factor has no influence. Compared with the control group, Ⅱ, Ⅲ, Ⅳ group＇s IgA content increased by 17.14%（P〈0.05）, 51.43%（P〈0.01） and 34.28%（P〈0.01）; IgG content increased by 23.96% （P〈0.05）, 36.28%（P〈0.01） and 28.99%（P〈0.01）, but has no significant effects on serum IgM content. Considering all the above, the serum IgA, IgG content with 0.06% β-mannanase are the best.
出处
《饲料工业》
2008年第14期37-40,共4页
Feed Industry
