Dietary lysolecithin enhances the value of high-lipid diet supplemented with fish stearin oil in post-juvenile largemouth bass Micropterus salmoides

Zhiyong Dong; Tianhong Ke; Ning Li; Baoping Zhang; Bo Wang; Jiaming Kang; Yu Zhang; Tong Qian; Liang Liu; Wanjie Cai; Trond Storebakken; Bo Shi; Yuexing Zhang

Aquaculture Reports (Dec 2024)

Dietary lysolecithin enhances the value of high-lipid diet supplemented with fish stearin oil in post-juvenile largemouth bass Micropterus salmoides

Zhiyong Dong,
Tianhong Ke,
Ning Li,
Baoping Zhang,
Bo Wang,
Jiaming Kang,
Yu Zhang,
Tong Qian,
Liang Liu,
Wanjie Cai,
Trond Storebakken,
Bo Shi,
Yuexing Zhang

Affiliations

Zhiyong Dong: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China; Norwegian University of Life Science, Faculty of Bioscience, Department of Animal and Aquaculture Science, NO-1432 Ås, Norway
Tianhong Ke: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China; Application R&D Centre for Asian and Pacific, Bühler Group, Liyang, Jiangsu 213300, China
Ning Li: Kemin AquaScience, Zhuhai, Guangdong 519040, China
Baoping Zhang: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Bo Wang: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Jiaming Kang: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Yu Zhang: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Tong Qian: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Liang Liu: Kemin AquaScience, Zhuhai, Guangdong 519040, China
Wanjie Cai: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China
Trond Storebakken: Norwegian University of Life Science, Faculty of Bioscience, Department of Animal and Aquaculture Science, NO-1432 Ås, Norway
Bo Shi: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China; Corresponding authors.
Yuexing Zhang: National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China; Corresponding authors.

Journal volume & issue: Vol. 39
p. 102365

Abstract

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The present study aimed to investigate the ameliorative effects of lysolecithin on fish stearin oil, meanwhile comparing the application of two different forms (lysolecithin powder and lysolecithin oil) and three inclusion levels (0.25, 0.75, 1.25 g kg−1) in largemouth bass. The entire study consisted of a 28-day digestibility trial and a consequent 68-day feeding experiment. Eight iso-nitrogenous (∼ 500 g kg−1) and iso-energetic (∼ 22 MJ kg−1) diets with high lipid level (∼ 170 g kg−1) were formulated to contain the same level of two different types of lysolecithin, and namely WFO (130 g kg−1 winterized fish oil), FSO (130 g kg−1 fish stearin oil), LLP (FSO + 1 g kg−1 lysolecithin powder, purity 250 g kg−1), MLP (FSO + 3 g kg−1 lysolecithin powder), HLP (FSO + 5 g kg−1 lysolecithin powder), LLO (FSO + 0.625 g kg−1 lysolecithin oil, purity 400 g kg−1), MLO (FSO + 1.875 g kg−1 lysolecithin oil) and HLO (FSO + 3.125 g kg−1 lysolecithin oil), respectively. Largemouth bass fed FSO showed lower apparent digestibility coefficients (ADCs) of nutrients (total fat, crude protein, gross energy, total amino acid, total essential amino acid) than the WFO. Without considering the lysolecithin type, medium and high doses (0.75, 1.25 g kg−1) significantly increased ADCs of nutrients compared with the 0.25 g kg−1 supplementation level. Lysolecithin oil significantly increased ADCs of nutrients than the lysolecithin powder. Thus, lysolecithin oil was chosen for 68-day feeding trial, and results showed the highest FBW, FI, WGR and SGR were recorded in diet HLO, and significantly higher than the FSO, LLO and MLO. Diet MLO significantly decreased lipid and energy in whole-body and lipid retention compared with the FSO, LLO and HLO. In addition, activity and mRNA expression of adipose triglyceride lipase significantly increased, while glycerol-3-phosphate acyltransferase 4 decreased in diet HLO.

Published in Aquaculture Reports

ISSN: 2352-5134 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: http://www.journals.elsevier.com/aquaculture-reports/

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