Replacement of fish oil in plant‐based diets for Pacific white shrimp,Litopenaeus vannamei,by stearine fish oil and palm oil     

Fabio Soller  Luke A. Roy  D. Allen Davis 《Journal of the World Aquaculture Society》2019,50(1):186-203

Stearine fish oil (SFO) and palm oil (PO) have emerged as promising alternatives for the replacement of fish oil (FO) in aquafeeds. This study evaluated the replacement of FO with alternative oils in practical diets for Litopenaeus vannamei. In a clear brackish water study (14.1 g/L) utilizing shrimp (0.29 ± 0.02 g, initial weight), FO was replaced by SFO at inclusion ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 (FO:SFO) and PO as 90% of FO. After 55 days, no significant differences (p < 0.05) in final weight, growth, or survival of shrimp were observed. A second trial (8 weeks) in low‐salinity water (2.1 g/L) with shrimp (0.92 ± 0.02 g, initial weight) evaluated diets with 100% FO, 100% SFO, 90% PO, 90% soybean oil (SO), or 90% flaxseed oil (FXO) as a replacement for FO and four commercially produced diets with 2% of FO, SO, PO, or FXO. One treatment received half rations of the commercial FO diet, and one treatment was based entirely on natural productivity. Results show that the fatty acid profiles of the tail muscle conformed to the lipids of the feed, and highly unsaturated fatty acids (HUFAs) were preserved. Following 8 weeks of culture, there were no significant differences in production performance.  相似文献   

New equipment roundup dazzles scientists     

R Pool 《Science (New York, N.Y.)》1989,243(4898):1554-1556

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Du Pont Stakes Claim on Superconductor Rights: A fight looms over patent rights to the first high-temperature superconductor, as several companies hope to develop the material     

Pool R 《Science (New York, N.Y.)》1988,241(4870):1156

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Laser-Cooled Atoms Hit Record Low Temperatures: Carefully tuned lasers now chill atoms to a few millionths of a degree, allowing precise measurements of atomic properties     

Pool R 《Science (New York, N.Y.)》1988,241(4869):1041-1042

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New Superconductors Come Through: High-temperature superconductors have proved difficult to put to practical use, but recent advances in thallium-and bismuth-based materials should bring applications closer to reality     

Pool R 《Science (New York, N.Y.)》1988,240(4859):1613-1615

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Solar Cells Turn 30: Photovoltaics have passed an important milestone with the development of the first solar cell to surpass 30% efficiency in converting sunlight to electricity     

Pool R 《Science (New York, N.Y.)》1988,241(4868):900-901

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Microscopic Motor Is a First Step: Using the same technology that allows the fabrication of thousands of transistors on one tiny computer chip, researchers are building ultra-miniature machines     

Pool R 《Science (New York, N.Y.)》1988,242(4877):379-380

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Setting a New Standard: High-definition television will bring movie-like picture quality and stereo sound to America's couch potatoes. Choosing a standard will involve economic as well as technical considerations     

Pool R 《Science (New York, N.Y.)》1988,242(4875):29-31

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Similar experiments, dissimilar results     

Pool R 《Science (New York, N.Y.)》1988,242(4876):192-193

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Seeing chaos in a simple system     

Pool R 《Science (New York, N.Y.)》1988,241(4867):787-788

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