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饲料中添加β-葡聚糖对福瑞鲤生长指标、非特异性免疫相关酶活力及抗病力的影响
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Abstract:
本实验研究了饲料中添加β-葡聚糖对福瑞鲤(Cyprinus carpio)生长性能、免疫性能及抗病力的影响。以基础饲料和含有2‰ β-葡聚糖的基础饲料分别作为对照组和实验组投喂初始体重为251.5 g ± 3.2 g福瑞鲤240 d。实验结果表明：实验组终末体质量(FBW)、绝对增重率(AGR)和体重增长率(IR)较对照组升高；实验组实验鱼血浆超氧化物歧化酶(SOD)、溶菌酶(LZM)、酸性磷酸酶(ACP)、过氧化氢酶(CAT)活力较对照组显著升高(P < 0.05)；实验组血清总蛋白、球蛋白含量较对照组显著升高(P < 0.05)，实验组血清白蛋白(ALB)较对照组差异不显著(P > 0.05)。攻毒实验结果显示，免疫组在爱德华氏菌攻毒后的相对免疫保护率为25%。本实验结果显示：饲料中添加2‰ β-葡聚糖能提高福瑞鲤生长性能、非特异免疫性能，增强福瑞鲤抗病力。
This study explored the effects of β-glucan on the growth performance, serum immune parameters, and disease resistance of juvenile carp. In this experiment, one group diet containing 2‰ β-glucan was designed to juvenile carp (251.5 g ± 3.2 g) for 240 days. The results showed, in experimental group the final body weight (FBW), absolute growth rate (AGR) and increasing rate of body weight (IR) of fish were significantly increased compared with fish of control group; compared with control group, serum superoxide dismutase (SOD), lysozyme (LZM), acid phosphatase (ACP), and catalase (CAT) of fish in all experimental groups were significantly increased (P < 0.05), the serum total protein content, globulin content of fish in experiment group increased significantly (P < 0.05), the difference on the content of albumin was not significant (P > 0.05); The relative percentage of survival rate was 25% after Edwardsiella spp. challenge. The experiment included that dietary β-glucan could improve the growth performance, immune performance, and disease resistance.
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