Effects of mannan oligosaccharide supplementation on growth, some immune responses and gut lactic acid bacteria of common carp (Cyprinus Carpio) fingerlings
Effects of mannan oligosaccharide supplementation on growth, some immune responses and gut lactic acid bacteria of common carp (Cyprinus Carpio) fingerlings
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发表时间：
2015-09
影响因子：
1
通讯作者：
Parvin Momeni-Moghaddam;S. Keyvanshokooh;S. Ziaei-nejad;Amir Parviz Salati;Hossein Pasha-Zanoosi
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作者：
Parvin Momeni-Moghaddam;S. Keyvanshokooh;S. Ziaei-nejad;Amir Parviz Salati;Hossein Pasha-Zanoosi
本试验旨在研究甘露寡糖（MOS）对鲤鱼生长、部分免疫反应和肠道乳酸菌的影响。分别配制0、0.05%、0.10%和0.20% MOS含量的4种试验饲粮。每种饲料随机分配给初始平均体重约为14 g的三组鱼。8周后，各治疗组的存活率均较高，但差异无统计学意义（p < 0.05）。生长性能包括末重、增重（WG）和特定生长率（SGR），各处理间无显著差异。饲料系数（FCR）在0.05 ~ 0.20%的MOS饲料中较好。MOS饲料显著提高了替代补体活性、溶菌酶活性和血清总Ig (p < 0.05)，显著提高了乳酸菌水平（p < 0.05）。由此可见，0.20%的MOS可提高鲤鱼的免疫应答，改善饲料转化率，调节肠道菌群。
This study was conducted to determine the effects of mannan oligosaccharide (MOS) on growth, some immune responses and gut lactic acid bacteria of common carp. Four experimental diets containing 0%, 0.05%, 0.10% and 0.20% MOS were prepared. Each diet was randomly allocated to triplicate groups of fish with initial average weight of approximately 14 g. After eight weeks, survival rate was high in all treatments with no significant difference (p > 0.05). Growth performance including final weight, weight gain (WG) and specific growth rate (SGR) did not differ among the treatments. Feed conversion ratio (FCR) was better when the fish were fed 0.05 to 0.20% MOS diets. The alternative complement activity, lysozyme activity and serum total Ig were found to be significantly (p 0.05), the lactic acid bacteria levels were significantly elevated in fish fed MOS diets (p < 0.05). These results indicated that oral administration of MOS at 0.20% elevated the immune response, improved FCR and modulated intestinal microbiota of common carp.