發(fā)布時間：2018-04-28 21:14

  本文選題：香菇多糖 + 斷奶大鼠��； 參考：《動物營養(yǎng)學(xué)報》2017年03期

【摘要】：本研究旨在探討飼糧中添加香菇多糖對斷奶大鼠生長性能、抗氧化能力和腸道健康的影響。試驗選取20只健康的斷奶Wistar大鼠,按照體重相近的原則分為2個組(每組10只),分別飼喂基礎(chǔ)飼糧和添加了84 mg/kg香菇多糖(香菇多糖有效含量為30%)的試驗飼糧。試驗期為21 d。結(jié)果表明:飼糧中添加84 mg/kg香菇多糖顯著提高了斷奶大鼠的平均日增重和平均日采食量(P0.05),顯著降低了料重比(P0.05);飼糧中添加84 mg/kg香菇多糖顯著提高了斷奶大鼠血清和空腸的總抗氧化能力(P0.05),不同程度降低了血清(P0.05)和空腸(P=0.08)丙二醛含量;飼糧中添加84 mg/kg香菇多糖顯著提高了斷奶大鼠空腸黏膜絨毛高度和絨毛高度/隱窩深度(P0.05);此外,飼糧添加84 mg/kg香菇多糖提高了斷奶大鼠盲腸食糜中乳酸菌的數(shù)量(P=0.07),顯著降低了盲腸食糜中大腸桿菌的數(shù)量(P0.05),并顯著提高了盲腸食糜中乙酸、丙酸、丁酸和總揮發(fā)性脂肪酸的含量(P0.05)。綜上所述,在斷奶大鼠飼糧中添加84 mg/kg香菇多糖(香菇多糖有效含量為30%)可以改善其抗氧化能力、空腸黏膜形態(tài)結(jié)構(gòu)和盲腸菌群結(jié)構(gòu),進(jìn)而提高生長性能。
[Abstract]:The purpose of this study was to investigate the effects of lentinan supplementation on growth performance, antioxidant capacity and intestinal health in weaned rats. Twenty healthy weaned Wistar rats were divided into 2 groups according to the principle of similar body weight (10 rats in each group) fed with basic diet and 84 mg/kg lentinan (effective content of Lentinus edodes polysaccharide 30). The experimental period is 21 days. The results showed that the dietary supplementation of 84 mg/kg lentinan significantly increased the average daily gain (ADG) and average daily intake (ADFI) of weaned rats, and significantly decreased the feed weight ratio (FW) of Lentinus edodes (Lentinus edodes) for 84 mg/kg, and the dietary supplementation of Lentinus edodes for 84 mg/kg significantly increased the serum level of weaning rats. The content of MDA in serum P0.05) and jejunum P0. 08) was decreased in different degree with the total antioxidant capacity (P0. 05) of the jejunum and the content of P0. 05) in the jejunum. Dietary supplementation of 84 mg/kg lentinan significantly increased the villus height and villus height / crypt depth of jejunum of weaned rats (P 0.05). Dietary supplementation of lentinan for 84 mg/kg increased the number of lactic acid bacteria in the caecum chyme of weaned rats, significantly decreased the number of Escherichia coli in the caecum chyme, and significantly increased the content of acetic acid and propionic acid in the caecum chyme. The content of butyric acid and total volatile fatty acid was 0.05%. In conclusion, 84 mg/kg lentinan (the effective content of Lentinus edodes polysaccharide is 30%) in weaning diet could improve the antioxidant ability, jejunal mucosal morphology and cecal flora structure, and then improve the growth performance of Lentinus edodes (Lentinus edodes).
【作者單位】： 四川農(nóng)業(yè)大學(xué)動物營養(yǎng)研究所動物抗病營養(yǎng)教育部重點實驗室;
【基金】：四川省科技支撐項目(2013NZ0056) 現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系(CARS-36)
【分類號】：S816

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