期刊
AQUACULTURE NUTRITION
卷 17, 期 2, 页码 200-213出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2095.2009.00726.x
关键词
growth; n-3 fatty acids; shrimp; stearidonic acid
类别
资金
- Monsanto Co. St Louis, MO, USA
The ability of shrimp Litopenaeus vannamei to utilize soy oil (SO) modified to contain stearidonic acid (SDA) in replacement of fish oil (FO) by converting SDA to highly unsaturated fatty acids (HUFA) was examined. Six diets with either supplemental modified SO or FO and three levels of fishmeal (FM) replacement (0%, 50% and 100%) by soybean meal (SBM) were fed to shrimp (1.7 g) for 12 weeks. The effect of oil source at the three SBM levels on growth and fatty acid profiles was examined by contrast analysis and sensory attributes by t-tests (5% error rate). At 0% SBM inclusion, there was no effect of dietary oil source, while at the highest SBM inclusion level, shrimp fed the FO diet outperformed those fed the corresponding SO diet. Oil source had no effect on sensory attributes. The fatty acid profiles of the shrimp reflected that of the diets. SDA SO can replace supplemental FO in diets for shrimp with no reduction in growth when there is sufficient oil present from FM. At low FM, however, replacing FO with SDA SO reduces shrimp performance and tissue n-3 HUFA levels. It is concluded that SDA is unable to meet the essential fatty acid needs of shrimp.
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