中药复方对保育阶段仔猪血清中胆固醇与脂蛋白的影响

目的]在基础日粮的水平上添加中药复方,纯中药全程饲喂,对保育阶段仔猪血清中胆固醇和脂蛋白含量进行测定,为该中药复方对保育阶段仔猪增强机体抵抗力,降低抗生素在畜牧业的应用,形成质量可靠的“无抗”猪肉提供帮助。方法]试验选用80头（28±2）日龄、体重相近的“杜×长×大”三元杂交断奶仔猪,随机分为4个处理,每个处理2个重复,每个重复10头仔猪。第1组为对照组,饲喂基础日粮,第2、3、4组在饲喂基础日粮的基础上分别添加1.5%、1.0%和0.5%的中药复方,试验期4周。试验结束第2天上午9：00空腹,前腔静脉采血,进行全血血常规指标测定。结果]与对照组相比,饲料中添加中药复方组保育仔猪血清中脂蛋白脂肪酶含量均有升高,其中,添加0.5%中药复方组与对照组相比差异显著（P<0.05）;与对照组相比,饲料中添加中药复方组保育仔猪血清中高密度脂蛋白含量均有升高,其含量随中药复方添加量的减少而逐渐降低,各中药复方添加组与对照组相比差异均不显著（P>0.05）;与对照组相比,饲料中添加中药复方组保育仔猪血清中低密度脂蛋白含量均有所下降,其含量随中药复方添加量的减少而逐渐降低,其中,添加0.5%中药复方组与对照组相比差异极显著（P<0.01）;与对照组相比,饲料中添加中药复方组保育仔猪血清中三酰甘油含量均有下降,其含量随中药复方添加量的减少而逐渐降低,各中药复方添加组与对照组相比差异均不显著（P>0.05）。结论]在基础日粮中添加中药复方组保育仔猪血清中脂蛋白脂肪酶含量、高密度脂蛋白含量均有升高;保育仔猪血清中低密度脂蛋白含量、三酰甘油含量均有降低。

Effects of Dietary Supplementation of Compound Traditional Chinese Medicine on Serum Cholesterol and Lipoprotein in Nursery Piglets

Objective] To assess the effects of dietary supplementation of compound traditional Chinese medicine(CTCM) on serum level of cholesterol and lipoprotein of piglets in nursery stage, and to provide references for the development of traditional Chinese medicine that can enhance the immunological functions of nursery piglets, for the reduction of antibiotics uses in livestock breeding industry, and for the antibiotics-free pork production. Method] A total of 80(28 ±2)-day-old ′ Duroc ×Landrace×Yorkshire′ three-way crossbred piglets with similar weight were randomly divided into 4 treatments(groups) with 2 replicates in each treatment(group) and 10 piglets in each replicate. The first group was served as a control group which fed a basal diet. The second, third and fourth groups were fed with the basal diet supplemented with 1.5%, 1.0% and 0.5% CTCM, respectively. The experimental period lasted for 4 weeks. On the second day after the end of the experiment,the blood samples were collected from anterior vena cava at 9:00 am before feeding, and the routine indicators of the whole blood were measured. Result] Compared to the control group, the serum content of lipoprotein lipase in the nursery piglets with dietary supplementation of CTCM were all increased, and significant(P<0.05) difference was observed between the 0.5% CTCM addition group and control group. While the elevated serum level of high-density lipoprotein was observed in all of the CTCM addition groups compared to control group,no significant difference was observed(P>0.05);the serum level of high-density lipoprotein of the nursery piglets was reduced with the decreasement of addition ration of the CTCM. Compared with the control group, the serum content of low-density lipoprotein of the CTCM addition groups were all reduced, and it was decreased with the reduction of addition ration of the CTCM;extremely significant(P <0.01) difference was found between the 0.5% CTCM addition group and control group. The serum content of triacylglycerol had the same changing feature with low-density lipoprotein, but no significant difference was observed between the CTCM addition groups and control group(P>0.05). Conclusion] Dietary supplementation of CTCM elevated the serum content of lipoprotein lipase and high-density lipoprotein of the crossbred nursery piglets, and reduced the serum level of low-density lipoprotein and triacylglycerol.