期刊
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
卷 51, 期 2, 页码 393-406出版社
WILEY
DOI: 10.1111/jwas.12654
关键词
alternative lipid source; beef tallow; docosahexaenoic acid; fatty acid composition; fish oil; Paralichthys olivaceus
类别
资金
- National Institute of Fisheries Science [R2019019]
- Feeds and Foods Nutrition Research, Pukyong National University
This study evaluated the effects of replacing fish oil (FO) with beef tallow (BT) in juvenile olive flounder, Paralichthys olivaceus (3.93 +/- 0.07 g), over 8 weeks. Seven diets, consisting of 0, 25, 50, 75, and 100% replacement of FO with BT and 63 and 75.9% replacement supplemented with docosahexaenoic acid (DHA) at 0.9 and 1.1% of 100 g diet, respectively, were distributed into 21 tanks in a semi-recirculation system with 15 fish per tank. The replacement of FO with BT at the given levels showed no significant changes (p > .05) in growth performance and whole-body proximate composition. Fish fed the diet of 75.9% replacement with 1.1% DHA supplementation showed the best performance in these measurements among the treatments. Plasma glutamic pyruvic transaminase, cholesterol, high- and low-density lipoproteins, and total protein were not significantly influenced by the replacement of FO with BT. The FO replacement generally resulted in a reduction of eicosapentaenoic acid, DHA, and n-3/n-6 polyunsaturated fatty acid ratio in the whole body, whereas the DHA supplementation recovered the level of DHA and the n-3/n-6 ratio to those observed in the group fed the 0% replacement diet. Taken together, BT along with DHA supplementation can potentially be a cost-effective alternative for FO in olive flounder culture.
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