Universal feedstuff additive for sea water fish

Abstract

The invention relates to a universal marine fish foodstuff additive, and the adding weight scope of the marine fish foodstuff additive in one ton of marine fish compound foodstuff is 20 to 30kg. Regarding to the practical operation necessity and the physicochemical characteristics of various nutrients of the additive, the additive is divided into two main types during the preparation process, i.e., complex vitamin and complex trace element, which can be prepared respectively. Long term of cultivation experiments on such marine fishes as weever, large yellow croaker, American red fish, Sparidae fishes, and trachinotus ovatus, rud and cobia prove that: the marine fish foodstuff additive has complete nutrients, can satisfy all nutrients demands of various marine fishes cultivated in high density, and can be safely and high effectively used for a long time without toxic and side effects; and the cultivated objects can rapidly grow and has high foodstuff conversion rate and good cultivation efficiency. Furthermore, the compound foodstuff can intensify the immunity and anti-stress ability of fishes and endow them with good vitality, vivid body color and high survival rate; compared withmarine fishes cultivated by other foodstuffs, the excretion rate of nitrogen and phosphorous of the marine fishes cultivated by the compound foodstuffs is lowered effectively, which causes smaller contamination to the cultivation water body.

Description

technical field [0001] The invention relates to an aquaculture feed additive, in particular to a general-purpose seawater fish feed additive. Background technique [0002] my country is the number one country in aquaculture in the world, and it is also the only country in the world where aquaculture production exceeds fishing production. Aquaculture occupies a very important position in the national economy. In recent years, my country's aquaculture industry has developed vigorously, especially the fourth wave of aquaculture represented by marine fish farming is in the ascendant. However, due to the current international and domestic research on marine fish nutrition, especially vitamins and trace elements, is not sufficient, and most of its additives are determined by reference to other similar aquaculture species or based on experience, resulting in a generally high feed coefficient for marine fish feed. The cost of aquaculture remains high, and the cost of aquaculture fe...

AI Technical Summary

Problems solved by technology

However, due to the current international and domestic research on marine fish nutrition, especially vitamins and trace elements, is not sufficient, and most of its additives are determined by reference to other similar aquaculture species or based on experience, resulting in a generally high feed coefficient for marine fish feed. The cost of aquaculture remains high, and the cost of aquaculture feed may be higher than the market price when the price of seawater fish declines; at the same time, due to improper use of additives, excessive nitrogen