文章摘要
核黄素对齐口裂腹鱼生长性能、体组成、免疫及抗氧化能力的影响
Effects of riboflavin on growth performance, body composition, immunity and antioxidant capacity of Schizothorax prenanti
投稿时间:2019-05-07  修订日期:2019-10-11
DOI:
中文关键词: 齐口裂腹鱼  核黄素  生长性能  体组成  抗氧化能力
英文关键词: Schizothorax prenanti  riboflavin  growth performance  body composition  antioxidant capacity
基金项目:重庆市基础与前沿研究计划项目(cstc2013jcyjA80033);2015年西南大学青年基金项目
作者单位E-mail
杨理想 西南大学动物科学学院 1130577216@qq.com 
向枭 西南大学动物科学学院 xiangx@126.com 
周兴华 西南大学动物科学学院  
罗 莉 西南大学动物科技学院  
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中文摘要:
      摘要:研究了不同核黄素水平对齐口裂腹鱼生长性能、体组成及免疫指标的影响;以540尾健康的齐口裂腹鱼[体重(10.54±0.01)g]为实验对象,随机分为6组,每组3个重复,每个重复30尾实验鱼。分别投喂核黄素水平为0.67、2.96、5.83、9.05、11.58 和 23.42mg/kg的6种等氮等能的实验饲料,养殖时间56天;研究结果表明:齐口裂腹鱼的增重率(WGR)、特定生长率(SGR)以及蛋白质效率(PER)均随核黄素添加水平升高呈先升后降趋势,5.83mg/kg组达到最大且显著高于其余组(P<0.05);饲料系数(FCR)呈先降后升趋势,5.83mg/kg组达到最低且显著低于其余组(P<0.05);核黄素可显著影响试验鱼的成活率(SR)、肝体指数(HSI)和脏体指数(VSI) (P<0.05);核黄素可显著影响试验鱼全鱼粗脂肪含量,但对其粗蛋白质、水分和灰分含量无明显影响 (P>0.05)。肝脏核黄素沉积量随着饲料核黄素水平的增加而升高;肝脏D-α-氨基氧化酶(DAAO)活性在5.83mg/kg组时达到最高。血清溶菌酶(LYZ)及过氧化氢酶(CAT)活性均随核黄素添加水平的提高而呈先升高后趋于稳定的变化趋势。丙二醛(MDA)含量则随核黄素添加水平的提高而呈先降低后趋于稳定的变化趋势。说明核黄素可有效地提高齐口裂腹鱼随饲料的消化利用率,提高免疫及抗氧化能力,促进其生长。综合考虑齐口裂腹鱼生长性能和免疫能力最佳时核黄素添加水平为5.32-5.89mg/kg。
英文摘要:
      Abstract: A feeding trial was carried out to estimate the effects of riboflavin on growth performance, body composition, immunity and antioxidant capacity of Schizothorax prenanti. Six purified diets were formulated to contain 0.67、2.96、5.83、9.05、11.58 and 23.42mg/kg riboflavin,respectively. Schizothorax prenanti with an average initial body weight of ( 11.21±0.16) g were fed the diets for 8 weeks and each diet had 3 replicates with 30 fish per replicate.The results showed as follows: The weight gain rate (WGR), specific growth rate (SGR) and protein efficiency (PER) of the fish were increased first and then decreased with the increase of riboflavin level, and reached the maximum and significantly higher in the 5.83mg/kg group and the other groups (P<0.05); the feed coefficient (FCR) decreased first and then increased, the lowest in the 5.83mg/kg group and significantly lower than the other groups (P<0.05); riboflavin significantly affected the survival rate of the test fish (SR), liver index (HSI) and visceral index (VSI) (P<0.05); riboflavin significantly affected the crude fat content of whole fish, but had no significant effect on crude protein, water and ash content. (P>0.05). The amount of riboflavin in the liver increased with the increase of the riboflavin level; the liver D-α-amino oxidase (DAAO) activity reached the highest in the 5.83 mg/kg group. The activities of serum lysozyme (LYZ) and catalase (CAT) increased first and then stabilized with the increase of riboflavin. The content of malondialdehyde (MDA) decreased first and then stabilized with the increase of riboflavin level. It is indicated that riboflavin can effectively improve the digestibility of feed with the feed, improve the immunity and antioxidant capacity, and promote its growth. Considering the best growth performance and immune ability of Schizothorax prenanti, 5.32-5.89mg/kg of riboflavin would be enough.gh.
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