Effects of replacing fish oil with stearine as main lipid source in diet on growth and survival of Pacific White Shrimp, Litopenaeus vannamei (Boone, 1931)

摘要

The stearine fraction from raw fish oil refinement has been treated as a waste material. This study was conducted to evaluate effects of replacing prime refined fish oil with stearine as the main lipid source to a control diet on shrimp growth and survival as well as on pellet water stability of diets. Test diets were processed containing three levels (0.7%, 1.3% and 2.7%) of either stearine or refined fish oil in a semi-purified control diet. These diets were each assigned to five or six replicated tanks and each tank was stocked with seventeen juvenile shrimp (ca.similar to 0.50 similar to g) in an indoor seawater recirculating system. At the end of 6 similar to weeks, the survival of shrimp was 89.495.3% with no significant difference (P similar to>similar to 0.05) among dietary treatments. The six test diets obtained significantly higher (P similar to