Effect of Fiber Content in Practical Diet on Feed Utilization and Antioxidant Capacity of Loach, Misgurnus anguillicaudatus

Ying Sun, Xinglong Zhao, Haiyan Liu, Zhencai Yang
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引用次数: 3

Abstract

This study aimed to evaluate the effect of fiber content on feeding, growth performance, feed utilization and antioxidant ability of Taiwanese loach. The experimental feeds were divided into six groups, with crude fiber contents of 4.70%, 4.92%, 5.15%, 5.44%, 5.79% and 6.06%, respectively. A total of 576 loaches were randomly divided into 6 groups with 8 replicates of twelve fish each, and fed for 60 days. The results showed that crude fiber levels had significant effects on feeding rate (FR), feed conversion rate (FCR) and protein efficiency ratio (PER) in loaches, while specific growth rate (SGR) showed no significant difference (P>0.05). Crude fiber content had a significant effect on loach digestibility (P 0.05), while amylase activity decreased significantly (P<0.05). With increasing crude fiber content, MDA content in loach liver decreased significantly (P<0.05), while SOD activity did not change significantly. According to the current comprehensive evaluation, the appropriate crude fiber content in Taiwanese loach feed was 5.52% - 5.65%.
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实用饲料中纤维含量对泥鳅饲料利用及抗氧化能力的影响
本研究旨在探讨纤维含量对台湾泥鳅摄食、生长性能、饲料利用及抗氧化能力的影响。试验饲料分为6组,粗纤维含量分别为4.70%、4.92%、5.15%、5.44%、5.79%和6.06%。试验选取576尾泥鳅,随机分为6组,每组8个重复,每个重复12尾,饲喂60 d。结果表明:粗纤维水平对泥鳅的摄食率、饲料系数和蛋白质效率有显著影响,而特定生长率无显著差异(P>0.05)。粗纤维含量显著影响泥鳅消化率(P 0.05),淀粉酶活性显著降低(P<0.05)。随着粗纤维含量的增加,泥鳅肝脏中MDA含量显著降低(P<0.05), SOD活性变化不显著。根据目前的综合评价,台湾泥鳅饲料中粗纤维的适宜含量为5.52% ~ 5.65%。
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