发酵木薯渣替代部分玉米对湖羊生长性能、血清生化指标、屠宰性能和肉品质的影响

发布时间：2018-05-13 23:40

本文选题：湖羊 + 发酵木薯渣　；参考：《草业学报》2017年03期

【摘要】：本研究旨在探索发酵木薯渣在湖羊日粮中替代部分能量饲料(玉米)的可行性,并确定最佳替代比例。选择48只体重为(18.35±1.39)kg的湖羊公羔,随机分成4组,每组4个重复,每个重复3只羊,分别用发酵木薯渣替代0%(对照组)、20%(A组)、40%(B组)、60%(C组)玉米的日粮进行饲喂,试验期60d。在试验开始和结束时测定羔羊生长性能,并采集血液样品进行分析,同时在试验结束时进行屠宰试验,测定屠宰性能以及肉品质。研究结果表明,A组湖羊的平均采食量(ADFI)显著高于对照组和B组(P0.05),日增重(ADG)的变化趋势为A组B组对照组(P0.05),A组和B组的料重比(F/G)有低于对照组的趋势(P0.05)。而C组湖羊由于腹泻严重,于试验开始2周后将其淘汰。A组的宰前活重、胴体重、肝、瓣胃和肾的重量显著大于对照组和B组(P0.05),而各组其他内脏器官无显著差异(P0.05)。各组湖羊的血液生化指标和肉品质均无显著差异(P0.05)。B组的肉豆蔻酸、棕榈酸等饱和脂肪酸的含量显著低于A组(P0.05),而B组的十七烷酸和花生酸的含量显著高于A组和对照组(P0.05),其他种类的脂肪酸无显著差异(P0.05)。由此可见,利用发酵木薯渣替代20%玉米对湖羊公羔的生长发育和健康无不良影响,且能降低饲料成本,育肥效果最好。因此,将发酵木薯渣作为湖羊的饲料来源是完全可行的。
[Abstract]:The purpose of this study was to explore the feasibility of fermenting cassava dregs in Hu sheep diet to replace part of the energy feed (maize) and to determine the best substitution ratio. A total of 48 male lambs with weight of 18.35 卤1.39)kg were randomly divided into 4 groups, 4 replicates in each group and 3 sheep in each replica. Fermenting cassava dregs were used to substitute for the corn diet of the control group (control group 20) and the control group (group A) and the control group (group B). The diet was fed for 60 days. At the beginning and end of the experiment, the growth performance of lamb was measured, and blood samples were collected for analysis. At the end of the experiment, slaughter tests were carried out to determine the slaughter performance and meat quality. The results showed that the average feed intake (ADFI) of group A was significantly higher than that of control group and group B, and the trend of ADGG was that the ratio of feed to weight of group A and group B was lower than that of control group. In group C, due to severe diarrhea, the weight of premortem, carcass, liver, valve stomach and kidney in group A was significantly higher than that in group B and control group (P 0.05), but there was no significant difference in other viscera organs in each group (P 0.05). There was no significant difference in blood biochemical indexes and meat quality among the three groups. The content of saturated fatty acids such as palmitic acid was significantly lower than that of group A, while the contents of heptadecanoic acid and arachidic acid in group B were significantly higher than those in group A and control group (P 0.05), but there was no significant difference in other fatty acids. It can be seen that using fermenting cassava residue instead of 20% corn has no adverse effect on the growth and health of the male lambs of Hu sheep and can reduce the feed cost and fattening effect is the best. Therefore, it is feasible to use fermenting cassava dregs as feed source for Hu sheep.
【作者单位】：南京农业大学动物科技学院江苏省肉羊产业工程技术研究中心;泰州市海伦羊业有限公司;
【基金】：公益性行业(农业)科研专项南方地区肉羊育肥与高品质肉生产技术研究(201303144) 国家现代肉羊产业技术体系项目(CARS-39) 江苏省农业科技支撑计划项目湖羊规模化精细饲养技术的集成与创新(BE2014330)资助
【分类号】：S826.5

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