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首页> 外文期刊>BioTechnology: An Indian Journal >Effect of dietary ???￠-glucan on growth and immunity of Ancherythroculter nigrocauda
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Effect of dietary ???￠-glucan on growth and immunity of Ancherythroculter nigrocauda

机译：饮食中β-葡聚糖对黑gro鱼生长和免疫的影响

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The Ancherythroculter nigrocauda juveniles had been feeded with a- glucan from brewer???s yeast for 50 days in order to observe their growth performance and serumimmunoglobulin levels.With the addition level of a(1,3) -glucan from 0 to 1000 mg/kg, the weight gain rate (WGR), the specific growth rate (SGR) and protein efficiency ratio (PER) increased (< 500 mg/ kg) first, and then appeared to decline (> 500 mg/kg), while the feed conversion ratio (FCR) showed the opposite trend. Moreover, A2 group (500 mg/kg) presented the highest WER, SGR and PER, and the lowest FCR. There were significant differences (P <0.05) between the control and treatments in lysozyme (LZM) activity, superoxide dismutase (SOD) activity, acid phosphatase (ACP) activity, alkaline phosphatase (ALP) activity, plasma complement C3 and the phagocytic index (PI), and also the lowest immune parameters were found in the control. For LZM, SOD,ACP,ALP and PI, the highest values (P 0.05) appeared betweenA3 andA4. In conclusion, lower doses of a(1,3)-glucan addition to the diet could increase appetite, promote growth, improve the efficiency of feed utilization, and so reduce the feed conversion ratio.And Immune parameters indicated that a (1,3) -glucan could boost their immune systems and the immune enhancement was dose-dependent. Therefore a suitable addition of a(1,3)-glucan to the diet might be inferred: 500 mg/kg.
机译：为了观察黑增长Ancherythroculter nigrocauda幼鱼的生长性能和血清免疫球蛋白水平，用啤酒酵母中的α-葡聚糖喂养了50天。添加的α（1,3）-葡聚糖的含量为0至1000 mg / kg，体重增加率（WGR），比生长率（SGR）和蛋白质效率比（PER）先升高（<500 mg / kg），然后又下降（> 500 mg / kg），而饲料转化率（FCR）呈现相反的趋势。此外，A2组（500 mg / kg）的WER，SGR和PER最高，FCR最低。对照和处理之间的溶菌酶（LZM）活性，超氧化物歧化酶（SOD）活性，酸性磷酸酶（ACP）活性，碱性磷酸酶（ALP）活性，血浆补体C3和吞噬指数（P <0.05）有显着差异（P <0.05） PI），并且在对照中发现最低的免疫参数。对于LZM，SOD，ACP，ALP和PI，最高值（P 0.05）出现在A3和A4之间。总之，在日粮中添加较低剂量的a（1,3）-葡聚糖可以增加食欲，促进生长，提高饲料利用效率，从而降低饲料转化率。免疫参数表明a（1,3 -葡聚糖可以增强他们的免疫系统，并且免疫增强是剂量依赖性的。因此，可以推断在饮食中适当添加了a（1,3）-葡聚糖：500 mg / kg。

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