中药添加剂对断奶仔猪小肠黏膜形态和养分消化率的影响

摘要

选取28日龄体质量相近的杜长大断奶仔猪72头,随机分成4个组.试验共设对照组、中药Ⅰ组、中药Ⅱ组和抗生素组4个处理组,研究了中药添加剂对断奶仔猪小肠黏膜形态和养分消化率的影响.结果表明,各试验组肠壁厚度、黏膜厚度和隐窝深度(CD)与对照组相比,均无显著差异(P＞0.05)；中药Ⅱ组显著提高了各肠段绒毛高度(VH)(P＜0.05),尤其是空肠和回肠(P＜0.01),极显著地提高了各肠段VH/CD值(P＜0.01)；中药Ⅰ组显著提高了空肠段的绒毛高度和VH/CD值(P＜0.05)；抗生素组各肠段绒毛高度和VH/CD也有一定提高(P＞0.05).各试验组磷(P)的消化率有极显著提高(P＜0.01)；中药Ⅰ组极显著地提高了粗纤维(CF)的消化率(P＜0.01),显著提高了钙(Ca)的消化率(P＜0.05)；中药Ⅱ组极显著地提高了粗蛋白(CP),CF,Ca的消化率(P＜0.01),显著提高了粗脂肪(EE)的消化率(P＜0.05)；抗生素组对Ca和CF的消化率有显著影响(P＜0.05).%Seventy-two 28 day old Duroc x Landrace-Yorkshire weaned piglets were randomly assigned into four treatments as control group, Chinese medicine group I, Chinese medicine group II and antibiotic group. The results as follows: intestinal wall thickness, mucosal thickness and crypt depth of each experimental group showed no obviously difference (P>0.05). Chinese medicine group II obviously improved the various bowel villis length (P<0.05), especially in the jejunum and ileum (P<0.01), significantly improved VH/CD value of each segment of the bowel (P < 0.01); Chinese medicine group I obviously improved villus length and VH/CD values in jejunum (P< 0.05); Antibiotic group also had improvement (P> 0.05). Each experimental group on the digestion of crude protein (CP), phosphorus (P) were highly significant increased (P<0.0l); Chinese medicine group I significantly increased the crude fiber (CF) digestibility (P<0.01), calcium (Ca) digestibility were obviously increased (P< 0.05); Chinese medicine group II significantly improved the digestibility of CF and Ca (P <0.0l), obviously increased the digestibility of EE (P < 0.05); antibiotic obviously effected the digestibility of Ca and CF (P < 0.05).