黄花蒿乙醇提取物对奶牛生产性能和乳中CLA含量的影响

发布时间：2018-04-16 12:03

本文选题：黄花蒿乙醇提取物 + 奶牛　；参考：《内蒙古农业大学》2017年硕士论文

【摘要】：本试验以泌乳奶牛为研究对象,探讨了菊科植物黄花蒿乙醇提取物对奶牛瘤胃内环境指标、生产性能的影响,并对奶牛乳中CLA含量及乳脂脂肪组成的影响也进行了初步分析。选取体重(600±29kg)、胎次(2～3)、泌乳期(158±3d)及泌乳量(22.8±1.8kg/d)相似的15头泌乳荷斯坦奶牛,采用完全随机区组试验设计,试验分为对照组和2个试验组,对照组饲喂基础日粮,试验1组和试验2组的奶牛基础日粮中分别添加96g/d.头和160g/d.头黄花蒿乙醇提取物,每组5头奶牛。进行为期40d的饲养试验,其中前9d为预饲期,10～40d为正式期。试验结果表明:与对照组相比,添加黄花蒿乙醇提取物对2个试验组奶牛的瘤胃pH值和乙酸浓度均无显著影响(P0.05);2个试验组奶牛瘤胃液丁酸浓度和丙酸浓度均显著低于对照组(P0.05),试验1组和试验2组之间没有显著变化(P0.05);与对照组相比,各试验组的异戊酸浓度均有下降的趋势,其中试验2组的异戊酸浓度显著低于对照组,试验2组异戊酸浓度也显著低于试验1组(P0.05);2个试验组的戊酸浓度低于对照组,其中试验2组的戊酸浓度显著低于对照组(P0.05),2个试验组之间差异不显著(P0.05);添加黄花蒿乙醇提取物对奶牛产量奶、乳脂率、乳蛋白率、总固体含量、非脂乳固体、乳糖率均无显著影响(P0.05);添加黄花蒿乙醇提取物增加了 2个试验组奶牛乳中CLA含量,试验1组和试验2组奶牛乳中CLA含量分别提高了 30.7%和38.6%,其中试验2组乳脂中CLA的含量显著高于对照组(P0.05),2个试验组之间无显著变化(P0.05);对照组和2个试验组乳脂中的饱和脂肪酸、不饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸、短链脂肪酸、中链脂肪酸、长链脂肪酸均无显著差异(P0.05)。
[Abstract]:In the experiment of lactating dairy cows as the research object, discusses the Compositae Artemisia ethanol extract on environmental indicators in rumen, affect the production performance, and the influence of CLA content and milk fatty milk composition was also studied in this paper. Select the weight (600 + 29kg), parity, lactation ((2~3) 158 + 3D) and lactation (22.8 + 1.8kg/d) similar to 15 lactating Holstein cows, using completely randomized trial design experiment was divided into control group and 2 experimental groups, the control group was fed basal diet, 96g/d. and 160g/d. head of Artemisia ethanol extract were added to the test group 1 and group 2 the dairy based diet, each group of 5 cows. The breeding experiments were conducted for 40d, the 9D for the pre feeding period of 10 ~ 40d for formal period. The results showed that compared with the control group, adding ethanol extract of Artemisia annua in 2 test groups of cow rumen pH and There was no significant effect of acetic acid concentration (P0.05); 2 were cow rumen fluid butyric acid and propionic acid concentrations were significantly lower than the control group (P0.05), the test group 1 and did not change significantly between the 2 groups (P0.05); compared with the control group, each group of isovaleric acid concentration were decreased, ISO 2 groups of the experimental concentration of acid was significantly lower than the control group, the test group 2 was significantly lower than that of isovaleric acid concentration test group 1 (P0.05); acid concentrations of 2 test group than the control group, 2 groups of the experimental acid concentration was significantly lower than the control group (P0.05), there was no significant difference between the 2 groups (P0.05); adding ethanol extract of Artemisia annua on milk fat percentage, milk production, milk protein content, total solid content, non fat milk solids, lactose rate had no significant effect (P0.05); the content of CLA 2 test groups in milk of cows was adding ethanol extract of Artemisia annua, experiment group 1 and group 2 The content of CLA in milk of cows were increased by 30.7% and 38.6%, the content of CLA in milk fat test group 2 was significantly higher than the control group (P0.05), no significant changes between the 2 groups (P0.05); the control group and 2 experimental groups of unsaturated fatty acids in milk fat, unsaturated fatty acids, monounsaturated fat acids, polyunsaturated fatty acids and short chain fatty acids, medium chain fatty acids, there were no significant differences between the long chain fatty acids (P0.05).

【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S823

【参考文献】