摘要
本试验旨在研究不同饲料添加剂对肉牛血清生化指标、免疫功能和生长激素的影响。选用体况良好、平均体重为(326.57±11.01)kg、年龄约为15月龄的西门塔尔杂交肉牛42头,采用完全区组试验设计,随机分为7组(对照组、试验Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组),每组6个重复,对照组饲喂基础日粮,试验组在基础日粮基础上分别添加益生菌1、益生菌2、复合酶制剂1、复合酶制剂2、莫能菌素和中草药复合添加剂,正式期60 d。结果表明:(1)与对照组相比,各参试添加剂均具有降低总胆固醇(TC)、肌肝(CREA)、甘油三脂(TG)含量和天门冬氨酸氨基转移酶(AST)、丙氨酸氨基转移酶(ALT)活性,提高高密度胆固醇(HDL-C)、磷(P)、钙(Ca)、葡萄糖(GLU)含量和酸性磷酸酶(ALP)活性的作用,中草药添加剂组TC含量显著高于益生菌2组46.53%(P<0.05),CREA含量显著高于酶制剂1组16.52%(P<0.05)。(2)各参试添加剂均对肉牛血清中总胆白(TP)、白蛋白(ALB)、免疫球蛋白(Ig A、Ig M、Ig G)、C4、白细胞介素-2(IL-2)和IL-4的含量有提高的趋势,但各试验组间无显著差异(P>0.05);益生菌1组的C3含量显著高于莫能菌素组27.66%(P<0.05)。(3)各参试添加剂对肉牛甲状腺素(T4)、三碘甲状腺原氨酸(T3)、生长激素(GH)和胰岛素样生长因子(IGF-1)的含量均可起到提高作用,但各试验组间无显著差异(P>0.05)。可见,在本试验条件下,肉牛饲粮中添加各参试饲料添加剂,均可以提高肉牛免疫力,同时对肉牛血清生化指标和相关生长激素有一定影响,但影响程度不一。
This experiment was conducted to study the influence of the different feed additives on the serum biochemi-cal indicators,the immune system function parameters and the related growth hormone of beef cattle.A total of 42 15 month old simental crossing-breed cattles with the average weight of（326.57±11.01 ）kg in good body condition were randomly divid-ed into 7 groups（control group,tested group Ⅰ ,tested group Ⅱ ,tested group Ⅲ , tested group Ⅳ , tested group Ⅴ ,tested group Ⅵ）.With 6 replicates,which contained a cow for each.The control group was fed with basal fodder and the tested groups were fed with probiotics 1, probiotics 2, multi-enzyme preparations 1, multi-enzyme preparations 2,monensin and compound Chi-nese herbal medicine additives based on control group feed in 60 days formal triaLThe results showed that： （1）Compared with the control group, the contents of total cholestero（TC）, creatinine （CREA） and triglyceride （TG） and the activity of aspartate aminotransferase （AST）,alanine aminotransferase （ALT） reduced and the contents of high-density lipoprotein cholesterol （HDL-C）,phosphorus （P） , calcium （Ca）,glucose （GLU） and the activity of alkaline phosphatase （ALP） increased in each adding group.TC levels of Chinese herbal medicine additive group were 46.53% higher （P 〈 0.05） than that of probiotics 2 group,CREA levels were 16.52% higher enzyme preparation 1 group （P 〈 0.05）.（2）The contents of total protein（TP）,albu- min（ALB）, immunoglobulin A （IgA）, immunoglobulin M （IgM）, immunoglobulin G（IgG）, complement 4 （C4）, interleukin-2 （IL-2） and IL-4 in serum all rised in each adding group with no significant difference（P 〉 0.05）.Complement 3（C3） levels of probiotics 1 group were 27.66% higher than cephalosporins group （P 〈 0.05）.（3）Each additive in this study could enhance the contents of tetraiodothyronine（T4） ,3,5,35-triiodothyronine （T3）, growth hormone （GH） and insulin-like growth factors （IGF-1） ,but there was no significant difference among groups.As a result,each additive in this study could improve immunity of the beef cattle and had an effect on serum biochemical indexes and the related growth hormone with different influence degrees.
出处
《中国饲料》
北大核心
2016年第18期24-28,共5页
China Feed
基金
甘肃省农业科学院农业科技创新专项"牛羊健康养殖及粪便废弃物资源循环利用技术研究与示范"(2013GAAS04)
关键词
饲料添加剂
肉牛
血清生化指标
免疫功能
生长激素
feed additives
beef cattle
the serum biochemical indicators
immunity
growth hormone
