一种微生态制剂对芦花鸡生长性能及组织中FAS与ApoB基因表达的影响

发布时间：2018-04-04 03:17

  本文选题：微生态制剂　切入点：芦花鸡　出处：《湖南农业大学》2015年硕士论文

【摘要】：本文在芦花鸡日粮中添加微生态制剂探讨其对芦花鸡生长性能、常规养分表观代谢率、血清生化指标、脂类代谢相关基因表达量等指标的影响。试验选择1日龄健康芦花鸡320羽,随机分为2组,每组8个重复,每个重复20羽,试验日粮分为：基础日粮和添加0.2%的微生态制剂的试验日粮。饲养试验期分为两个阶段,每个阶段42天,共84天。试验结果如下：(1)微生态制剂对生长性能的影响：饲粮中添加0.2%微生态制剂,1-42日龄试验组末均重、ADG和ADFI分别较对照组提高了5.46%、6.25%和9.04%,但差异均不显著(P0.05)。43-84日龄,试验组末均重、ADG和ADFI分别较对照组提高了9.71%(P0.01)、10.37%(P0.01)和4.37%(P0.05)。试验结果表明,饲料中添加微生态制剂能够提高饲料转化率,提高生长性能。(2)对屠宰性能的影响：基础日粮中添加微生态制剂能够提高芦花鸡的屠宰性能。相比对照组,试验组屠宰率显著提高了4.25%(P0.05)；半净膛率、全净膛率、胸肌率、腿肌率分别提高了0.11%,1.01%,0.38%和7.38%；试验组鸡的腹脂率降低了41.43%。(3)对养分表观代谢率的影响：1-42日龄,日粮添加微生态制剂提高了试验组对粗蛋白的表观代谢率,相较对照组提高了4.17%,差异不显著(P0.05)；与对照组相比,粗脂肪表观代谢率降低19.23%(P0.01)、粗纤维提高了18.05%(P0.05)、粗灰分降低了26.09%(P0.05)。43-84日龄：粗蛋白的表观代谢率,相较对照组提高了14.38%,差异显著(P0.05)；与对照组相比,粗脂肪表观代谢率14.28%(P0.01)粗纤维提高了6.13%(P0.05),对粗灰分没有影响。结果表明,微生态制剂不同程度提高了芦花鸡饲养期间鸡对养分的表观代谢率。(4)对血清生化指标的影响：1-42日龄：试验组添加微生态制剂对试验组血清中Glu、HDL-C含量均有不同程度提高；且在不同程度降血清中TG、TC、LDL-C的含量,各组间差异不显著。43-84日龄,血清中Glu、TG、TC、LDL-C含量均有不同程度降低,各组间差异不显著；血清中HDL-C的含量得到提高,各组间差异不显著。(5)微生态制剂能降低肝脏、胸肌和回肠中FAS基因表达量,且回肠组差异显著；降低肝脏和回肠中ApoB基因表达量,提高胸肌ApoB基因的表达量,但组间差异不显著。综合结果表明,芦花鸡日粮中添加0.2%微生态制剂能够提高肉鸡的生长性能和部分养分表观代谢率,具有调节机体脂类代谢、提高胴体品质的作用。
[Abstract]:The effects of microecological preparations on growth performance, apparent metabolic rate of conventional nutrients, serum biochemical indexes and expression of genes related to lipid metabolism were investigated in the diet of LUHA-chicken.320 1-day-old healthy Luhua chickens were randomly divided into two groups, 8 replicates in each group and 20 in each group. The trial diet was divided into basic diet and experimental diet supplemented with 0.2% microecological agent.The feeding trial period was divided into two stages, each stage 42 days, a total of 84 days.The results were as follows: (1) the effect of microecological preparation on growth performance: ADG and ADFI in diet supplemented with 0.2% microecological agent at the end of 1-42 days of age increased by 5.46% 6.25% and 9.04%, respectively, compared with the control group, but the difference was not significant (P 0.05N. 43-84 d).Compared with the control group, the weight of ADG and ADFI in the test group were increased by 9.71% and 4.37% respectively.The results showed that the feed conversion rate and growth performance could be increased by adding microecological agent to feed, and the slaughter performance of Luhua chicken could be improved by adding microecological agent in basal diet.鐩告瘮瀵圭収缁，

本文编号：1708130