Effects of dietary fish oil replacement by soybean oil and L-carnitine supplementation on growth performance, fatty acid composition, lipid metabolism and liver health of juvenile largemouth bass, Micropterus salmoides

被引：70

作者：

Chen, Yifang ^{[1
,2
]}

Sun, Zhenzhu ^{[1
]}

Liang, Zuman ^{[2
]}

Xie, Yongdong ^{[2
]}

Su, Jiliang ^{[2
]}

Luo, Qiulan ^{[2
]}

Zhu, Junyan ^{[2
]}

Liu, Qingying ^{[1
]}

Han, Tao ^{[2
]}

Wang, Anli ^{[1
]}

机构：

[1] South China Normal Univ, Sch Life Sci, Key Lab Ecol & Environm Sci Guangdong Higher Educ, Guangdong Prov Key Lab Hlth & Safe Aquaculture, Guangzhou 510631, Guangdong, Peoples R China

[2] Guangdong Kondarl Agropastoral Technol Co Ltd, Dongguan 523000, Peoples R China

来源：

AQUACULTURE | 2020年 / 516卷

关键词：

Largemouth bass; Soybean oil; L-carnitine; Fatty acid composition; Liver morphology; PLASMA BIOCHEMICAL PARAMETERS; BODY-COMPOSITION; IMMUNE-RESPONSES; SEA-BASS; VEGETABLE-OILS; MEAT QUALITY; LINSEED OIL; EXTRACT; MORPHOLOGY; EXPRESSION;

D O I：

10.1016/j.aquaculture.2019.734596

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

This study was conducted to investigate the effects of dietary fish oil replacement by soybean oil and L-carnitine supplementation on growth performance, fatty acid composition, plasma biochemical parameters, lipid metabolism, hepatic antioxidant ability and morphology of juvenile largemouth bass, Micropterus salmoides. Five isonitrogenous and isoenergetic experimental diets were formulated by replacing 0 (Diet 1), 50% (Diet 2) and 100% (Diet 3) of fish oil by soybean oil, and 50% (Diet 4) and 100% (Diet 5) of fish oil by soybean oil supplemented with 0.02% L-carnitine. After 8 weeks of growth trial, dietary fish oil replacement by soybean oil and L-carnitine supplementation significantly increased final body weight and weight gain rate except for fish fed Diet 3 (P < 0.05). No significant effects were observed in the composition of back muscle and liver among all groups (P > 0.05). Dietary fish oil replacement by soybean oil not only caused oxidative stress and liver damage, but also decreased the content of long-chain polyunsaturated fatty acid such as ARA, EPA and DHA in muscle and liver of fish. However, dietary L-carnitine supplementation could improve growth performance, lipid metabolism and liver health of fish. In conclusion, 50% of fish oil can be replaced by soybean oil with no adverse effects on growth performance, plasma biochemical parameters and liver health, and dietary 0.02% L-carnitine supplementation was beneficial to the health of fish fed dietary fish oil replacement by soybean oil.

引用

页数：10

共 52 条

[11] Effects of dietary carnitine and lipid on growth and body composition of hybrid striped bass (Morone chrysops ♀ x M-saxatilis ♂) [J].