壳聚糖对断奶仔猪生长性能、粪便评分及血清激素和T淋巴细胞亚群的影响

发布时间：2019-05-03 18:47

【摘要】：本试验旨在研究壳聚糖对断奶仔猪生长性能、粪便评分及血清激素和T淋巴细胞亚群的影响。选取28日龄断奶的杜×大×长三元杂交仔猪60头,随机分为5组(每组12头):对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加250、500、1 000和2 000 mg/kg壳聚糖的试验饲粮。试验期14 d。结果表明:1)饲粮添加250~2 000 mg/kg壳聚糖显著提高断奶仔猪的平均日增重(ADG)(P0.05),显著降低料重比(F/G)(P0.05);2)饲粮添加250~2 000 mg/kg壳聚糖显著降低试验第11天断奶仔猪的粪便评分(P0.05);3)饲粮添加适宜剂量的壳聚糖显著提高断奶仔猪的血清促生长激素释放激素(GHRH)(250~2 000 mg/kg)、生长激素(GH)(500~1 000 mg/kg)和瘦素(LP)(2 000 mg/kg)的浓度(P0.05),显著降低血清促肾上腺皮质激素释放激素(CRH)(250~2 000 mg/kg)、促肾上腺皮质激素(ACTH)(500~1 000 mg/kg)、皮质醇(COR)(250~2 000 mg/kg)和可溶性CD8(sCD8)(500~2 000 mg/kg)的浓度(P0.05)。由此可见,饲粮中添加适宜剂量的壳聚糖能够促进断奶仔猪的生长,降低腹泻,缓解断奶应激。
[Abstract]:The purpose of this study was to study the effects of chitosan on growth performance, fecal score, serum hormone and T lymphocyte subsets in weaned piglets. Sixty 28-day-old crossbred piglets were randomly divided into 5 groups: control group (n = 12) and control group (n = 12), fed with 250, 500, 1 000 and 2 000 mg/kg chitosan in the basal diet, the control group was fed with basic diet, and the control group was fed with 250, 500, 1 000 and 2 000 min chitosan, respectively. The experimental period is 14 d. The results were as follows: 1) the average daily gain (ADG) () of weanling piglets was significantly increased and the feed-to-weight ratio (F / G) was significantly decreased (P0.05) with the addition of 250 ~ 2 000 mg/kg chitosan (P 0.05). 2) the fecal score of weaned piglets on the 11th day of the experiment was significantly decreased by the addition of 250 ~ 2 000 mg/kg chitosan (P0.05). 3) the serum (GHRH) (250 / 2 000 mg/kg of weanling piglets was significantly increased by dietary addition of chitosan at the appropriate dose, and the growth hormone-releasing hormone (mg/kg) of weanling piglets was significantly increased. The concentrations of growth hormone (GH) (500 / 1 000 mg/kg and leptin (LP) (2 000 mg/kg (P0.05) significantly decreased the serum corticotropin releasing hormone (CRH) (250 / 2 000 mg/kg). The concentrations of corticotropin (ACTH) (500 / 1 000 mg/kg), cortisol (COR) (250 / 2 000 mg/kg) and soluble CD8 (sCD8) (500 渭 2 000 mg/kg) were measured (P0.05). It can be seen that the addition of chitosan in diet can promote the growth of weanling piglets, reduce diarrhea and relieve weaning stress.
【作者单位】：内蒙古农业大学动物科学学院;
【基金】：国家自然科学基金(31460605)
【分类号】：S828.5

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