Feed for parent fish of Cynoglossus semilaevis

Abstract

The invention discloses a feed for parent fish of Cynoglossus semilaevis and belongs to a technology for preparing a marine fish compound feed. In the feed, the adding amount of fat is 8 percent, and the ratio of n-3 fatty acid to n-6 fatty acid is 2.81. The fat added into the feed for the parent fish of the Cynoglossus semilaevis is fish oil and soybean oil, and the content of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the fish oil is higher than 30 percent; and according to the formula, the feed for the parent fish of the Cynoglossus semilaevis comprises 70 percent of white fish meal, 6 percent of casein, 10 percent of flour, 2 percent of phospholipid, 1 percent of choline, 0.5 percent of vitamin C, 0.5 percent of multi-vitamin, 0.5 percent of complex mineral, 1.5 percent of calcium hydrophosphate, 2.5 percent of soybean oil and 5.5 percent of fish oil. A certain proportion of fish oil which is rich in the EPA and the DHA is added into the feed for the Cynoglossus semilaevis, and is matched with the soybean oil, so that the n-3 fatty acid and the n-6 fatty acid in an appropriate ratio are provided for the Cynoglossus semilaevis, the egg laying amount of the Cynoglossus semilaevis can be improved, the abnormality rate of fries can be reduced, and the lengths of 12-day fries can be increased.

Description

Technical field: [0001] The invention belongs to the preparation technology of compound feed for seawater fish, in particular to a broodstock feed for semi-smooth tongue sole. Background technique: [0002] With the rapid development of my country's aquaculture industry, the importance of broodstock breeding of aquatic animals has been highlighted. In recent years, many studies have shown that the reproductive performance of broodstock is affected by the quality of broodstock feed, which directly affects the development of gonads, the quality of sperm and eggs, and the quality of seedlings, thus restricting the development of aquatic animal seedlings. As we all know, the energy needed for the growth of aquatic animals mainly comes from fat, which provides essential fatty acids for fish, and it is also the carrier of fat-soluble vitamins. Insufficient fat content in the feed can lead to metabolic disorders of the fish body, a decrease in the utilization rate of protein in th...

AI Technical Summary

Problems solved by technology

In recent years, the artificial breeding technology of half-smooth tongue sole in my country has also made great progress, but there are not many studies on the nutritional requirements of half-smooth tongue sole broodstock

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