饲料铜水平对赤眼鳟幼鱼生长性能、体组成和成活率的影响

doi:10.14088/j.cnki.issn0439-8114.2021.12.021

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (12): 107-112.doi: 10.14088/j.cnki.issn0439-8114.2021.12.021

饲料铜水平对赤眼鳟幼鱼生长性能、体组成和成活率的影响

杨凯¹, 王岳松², 高银爱¹, 杨慧君², 袁勇超², 成为为¹, 魏辉杰¹, 王青云¹

1.武汉市农业科学院,武汉 430070;
2.华中农业大学水产学院农业动物遗传育种与繁殖教育部重点实验室/农业农村部淡水动物养殖重点实验室,武汉 430070

收稿日期:2020-10-30 出版日期:2021-06-25 发布日期:2021-07-19
通讯作者: 杨慧君（1984-）,女,湖北京山人,硕士研究生,主要从事高校公共平台大型仪器设备管理工作及渔业资源与环境,（电话）15827516928（电子信箱）yanghj@mail.hzau.edu.cn。
作者简介:杨凯（1982-）,男,山西五台人,高级工程师,主要从事水产养殖和遗传育种工作,（电话）18062012653（电子信箱）yangkaihappy@163.com。
基金资助:
湖北省科技支撑计划项目（2015BBA230）; 现代农业产业技术体系专项（CARS-46）

Effects of dietary copper on survival,growth and body composition of juvenile Squaliobarbus curriculus

YANG Kai¹, WANG Yue-song², GAO Yin-ai¹, YANG Hui-jun², YUAN Yong-chao², CHENG Wei-wei², WEI Hui-jie¹, WANG Qing-yun¹

1. Fisheries Research institute,Wuhan Academy of Agricultural Sciences,Wuhan 430070,China;
2. College of Fisheries,Key Lab of Agricultural Animal Genetics,Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding,Ministry of Agriculture and Rural Affairs,Huazhong Agricultural University,Wuhan 430070,China

Received:2020-10-30 Online:2021-06-25 Published:2021-07-19

摘要/Abstract

摘要： 以CuSO₄·5H₂O为铜源,在饲粮中分别添加0、1、2、3、4、6、8、10和12 mg/kg的铜,制得实测铜含量分别为0.29、1.31、2.28、3.43、4.57、6.61、8.77、10.73和12.89 mg/kg的9种饲粮,选取810尾初始体重为（6.22±0.11） g的赤眼鳟（Squaliobarbus curriculus）幼鱼,置于27个300 L的圆柱形水族箱中饲喂56 d,每个水箱放30尾鱼,每个处理设置3个重复。结果表明,①饲粮中未添加铜（0.29 mg/kg饲料铜组）时试验鱼会出现典型的饲粮铜缺乏症状,如生长不良和骨骼畸形。②饲粮中添加4 mg/kg的铜时（4.57 mg/kg饲料铜组）,试验鱼的特定生长率、蛋白质效率、肝体比、脏体比和存活率均达到最大,饲料系数达到最小（P<0.05）。③饲粮中添加12 mg/kg的铜时（12.89 mg/kg饲料铜组）,试验鱼肝体比、脏体比最低（P<0.05）。④饲粮铜水平对试验鱼肥满度无显著性影响（P>0.05）;饲粮铜水平对试验鱼体组成有显著影响（P<0.05）;随着饲粮铜水平的升高,试验鱼肝脏和全鱼铜含量均显著升高（P<0.05）,肝脏硫代巴比妥酸反应物（TBARS）先降低后升高（P<0.05）,在3.43 mg/kg饲料铜组达到最低值。在饲料中添加适量铜可以提高赤眼鳟幼鱼的生长性能和免疫力,对试验鱼增重率和饲料系数进行折线回归分析以及全体铜蓄积量的二次曲线回归分析表明,赤眼鳟幼鱼饲料中铜的适宜量为3.94~4.92 mg/kg。

关键词: 赤眼鳟（Squaliobarbus curriculus）, 铜需求量, 生长性能

Abstract: Treatments consisted of nine semi-purified diets containing graded levels of dietary copper （CuSO₄·5H₂O was added to a basal diet at 0, 1, 2, 3, 4, 6, 8, 10 and 12.0 mg/kg）, providing actual dietary values of 0.29, 1.31, 2.28, 3.43, 4.57, 6.61, 8.77, 10.73 and 12.89 mg/kg diet, respectively. Each diet was fed to triplicate groups of juvenile Squaliobarbus curriculus with initial body weight of 6.22 g in 300 L cylindrical fiberglass tank. The results showed that the typical dietary Cu deficient signs such as poor growth and malformation of skeleton were observed in fish fed the diets with 0.29 mg/kg diet. Fish fed the diet containing 4.57 mg/kg had the highest speciﬁc growth rate （SGR）. The lowest hepatosomatic index （HSI） and viscerosomatic index （VSI） were observed in fish fed the diet containing the highest Cu content diet （P<0.05）. Condition factor showed no signiﬁcant differences among the treatments （P>0.05）. Proximate composition of fish body was significantly affected by dietary copper level （P<0.05）. Cu contents of whole body and hepatic increased with dietary Cu levels （P<0.05）. Hepatic thiobarbituric acid reactive substances （TBARS） was found to decrease with increasing dietary concentrations of copper up to 3.43 mg/kg beyond which a reverse trend in this parameter was noted. （Conclusion） Analysis by the linear regression of weight gain （WG） and feed conversion ratio （FCR） and second-order regression of whole-body Cu retention of the fish indicated that dietary Cu requirement of juvenile Squaliobarbus curriculus was 3.94~4.92 mg/kg diet.

Key words: Squaliobarbus curriculus, copper requirement, growth performance

中图分类号:

S963.71

杨凯, 王岳松, 高银爱, 杨慧君, 袁勇超, 成为为, 魏辉杰, 王青云. 饲料铜水平对赤眼鳟幼鱼生长性能、体组成和成活率的影响[J]. 湖北农业科学, 2021, 60(12): 107-112.

YANG Kai, WANG Yue-song, GAO Yin-ai, YANG Hui-jun, YUAN Yong-chao, CHENG Wei-wei, WEI Hui-jie, WANG Qing-yun. Effects of dietary copper on survival,growth and body composition of juvenile Squaliobarbus curriculus[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(12): 107-112.

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饲料铜水平对赤眼鳟幼鱼生长性能、体组成和成活率的影响

Effects of dietary copper on survival,growth and body composition of juvenile Squaliobarbus curriculus

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