不同锌源对吉富罗非鱼生长性能、血清生化指标、血清和肝胰脏中微量元素含量的影响

付志欢; 林雪; 舒绪刚; 邱桂雄; 田允波; 陈明珠

doi:10.3969/j.issn.1006-267x.2019.08.030

动物营养学报 >

2019 , Vol. 31 >Issue 8: 3690 - 3698

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.08.030

水产营养 Aquaculture Nutrition

不同锌源对吉富罗非鱼生长性能、血清生化指标、血清和肝胰脏中微量元素含量的影响

付志欢 ,
林雪 ,
舒绪刚 ,
邱桂雄 ,
田允波 ,
陈明珠

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1. 仲恺农业工程学院动物科技学院, 广州 510225;
2. 广州天科生物科技有限公司, 广州 510896

付志欢(1989-),女,广东广州人,硕士研究生,研究方向为动物医学和动物营养。E-mail:495002110@qq.com

收稿日期: 2019-01-14

网络出版日期: 2019-08-19

基金资助

广东省教育厅基础研究重大项目及应用研究重大项目（2017KZDXM045）；广东省科技计划项目（2017A050506055）；大学生创新创业训练计划项目（201811347084）

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Effects of Different Zinc Sources on Growth Performance, Serum Biochemical Indices and Trace Element Contents in Serum and Hepatopancreas of Genetic Improvement of Farmed Tilapia

FU Zhihuan ,
LIN Xue ,
SHU Xugang ,
QIU Guixiong ,
TIAN Yunbo ,
CHEN Mingzhu

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1. College of Animal Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
2. Guangzhou Tanke Biotechnology Co., Ltd., Guangzhou 510896, China

Received date: 2019-01-14

Online published: 2019-08-19

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摘要

本试验旨在研究饲料中添加不同锌源（肠溶型甘氨酸锌、甘氨酸锌、一水硫酸锌）对吉富罗非鱼生长性能、抗氧化能力、脂肪代谢以及血清和肝胰脏中抗氧化相关微量元素铜、铁、锰、锌含量的影响。将240尾初重为（47.54±0.84）g的吉富罗非鱼随机分为4组，每组3个重复，每个重复20尾。对照组罗非鱼饲喂基础饲料（锌含量为72.22 mg/kg），试验组罗非鱼分别饲喂在基础饲料中添加40 mg/kg（以锌计）肠溶型甘氨酸锌、甘氨酸锌、一水硫酸锌的试验饲料。试验期为40 d。结果显示：与对照组和一水硫酸锌组对比，饲料中添加肠溶型甘氨酸锌不仅可以显著提高吉富罗非鱼的增重率和蛋白质效率（P<0.05），还可以显著降低吉富罗非鱼肝体比和饲料系数（P<0.05）。与对照组和一水硫酸锌组相比，甘氨酸锌组饲料系数显著降低（P<0.05），蛋白质效率显著提高（P<0.05）。各组血清超氧化物歧化酶、碱性磷酸酶活性无显著差异（P>0.05），但肠溶型甘氨酸锌组、甘氨酸锌组血清丙二醛含量显著低于对照组（P<0.05）。肠溶型甘氨酸锌组血清总胆固醇含量显著高于其他各组（P<0.05），同时甘油三酯含量显著高于对照组和一水硫酸锌组（P<0.05）。各组血清中铜、铁、锰含量无显著差异（P>0.05），但肠溶型甘氨酸锌组血清和肝胰脏中锌含量显著高于对照组和一水硫酸锌组（P<0.05）。结果提示，饲料中添加肠溶型甘氨酸锌可提高吉富罗非鱼的生长性能，提高抗氧化能力，促进脂肪代谢，增加血清和肝胰脏中锌含量，且肠溶型甘氨酸锌的促生长效果优于甘氨酸锌。

关键词： 锌源; 肠溶型; 吉富罗非鱼; 生长性能; 抗氧化能力; 脂肪代谢; 微量元素

本文引用格式

付志欢 , 林雪 , 舒绪刚 , 邱桂雄 , 田允波 , 陈明珠 . 不同锌源对吉富罗非鱼生长性能、血清生化指标、血清和肝胰脏中微量元素含量的影响[J]. 动物营养学报, 2019 , 31(8) : 3690 -3698 . DOI: 10.3969/j.issn.1006-267x.2019.08.030

Abstract

The purpose of this experiment was to study the effects of different zinc sources[zinc sulfate monohydrate (ZnSO₄), zinc glycinate (Zn-Gly) and (enteric-type Zn-Gly) on the growth performance, antioxidant capacity, fat metabolism and antioxidant related trace elements copper, iron, manganese and zinc contents in serum and hepatopancreas of genetic improvement of farmed tilapia (GIFT). A total of 240 GIFT with the initial body weight of (47.54±0.84) g were randomly divided into 4 groups with 3 replicates per group and 20 tilapia per replicate. Tilapia in control group were fed a basal feed (zinc content was 72.22 mg/kg), and those in experimental groups were fed the basal diet supplemented with 40 mg/kg (as zinc) of enteric-type Zn-Gly, Zn-Gly and ZnSO₄, respectively. The experiment lasted for 40 days. The results showed that, compared with the control group and the ZnSO₄ group, the supplementation of enteric-type Zn-Gly could not only significantly enhance the weight gain rate (WGR) and protein efficiency ratio (PER) (P<0.05), but also could significantly reduce the hepatosomatic index (HSI) and the feed conversion rate (FCR) (P<0.05); the FCR of the Zn-Gly group was significantly decreased (P<0.05), and the PER was significantly increased (P<0.05). Serum superoxide dismutase (SOD) and alkaline phosphatase (AKP) activities were not significantly affected by different zinc sources (P>0.05). However, serum malondialdehyde (MAD) content of the enteric-type Zn-Gly group and the Zn-Gly group was significantly lower than that of the control group (P<0.05). The serum total cholesterol (T-CHO) content of the enteric-type Zn-Gly group was significantly higher than that of the other groups (P<0.05), and the triglyceride (TG) content was significantly higher than that of the control group and the ZnSO₄ group (P<0.05). There were no significant effects in the contents of copper, iron and manganese in serum of each group (P>0.05). When compared with the control group and ZnSO₄ group, the supplementation of enteric-type Zn-Gly significantly increased the zinc content in serum and hepatopancreas (P<0.05). The results suggested that diets supplemented with enteric-type Zn-Gly can significantly improve the growth performance of GIFT, increase the antioxidant capacity, promote fat metabolism, and increase the zinc content in serum and hepatopancreas. Moreover, the enteric-type Zn-Gly may be better than Zn-Gly on the growth-promoting.

Key words： zinc source; enteric-type; genetic improvement of farmed tilapia; growth performance; antioxidant capacity; fat metabolism; trace elements

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