Premix for preventing irritation gill damage of trachinotus ovatus as well as preparation method and application of premix

Abstract

The invention relates to fish feed premixes and in particular to a premix for preventing irritation gill damage of trachinotus ovatus as well as a preparation method and application of the premix. The premix is prepared from the following components in parts by weight: 5-10 parts of a motherwort extract, 15-35 parts of a bitter orange extract, 10-15 parts of a plantain herb extract and 0.1-0.5 part of composite synergism substances, wherein the composite synergism substances comprise mint leaf powder, calcium chloride, citric acid and gallnuts at a weight ratio of (100-130):(1-1.5):(1-2.5):(10-18). Compared with a nutrient premix used in a trachinotus ovatus feed, the premix has a remarkable prevention function on irritation gill damage of the trachinotus ovatus, is capable of effectively alleviating symptoms of irritation gill damage of the trachinotus ovatus and effectively reducing the death rate caused by irritation gill damage of the trachinotus ovatus as multiple active factors are obtained through a unique fermentation technique and the composite synergism substances are compounded to synergistically improve prevention effects.

Description

technical field [0001] The invention relates to a fish feed premix, in particular to a premix for preventing stress gill damage of golden pomfret, a preparation method and an application of the premix. Background technique [0002] Golden pomfret is one of the important seawater economic breeding species in my country. While the continuous high yield has brought about an increase in production, it has also affected the supply and demand balance of golden pomfret, affecting the price of golden pomfret and the economic return of breeding to a certain extent. Therefore, under the background of the low price of golden pomfret, stabilizing the production of golden pomfret and improving the survival rate of breeding will be an important prerequisite for the profitability of golden pomfret farming. [0003] Similar to other fishes, the important physiological function of the gill tissue of the golden pomfret is still an important place for gas exchange, and it also undertakes part ...

AI Technical Summary

Problems solved by technology

At the initial stage of stress, the secretory cells of the local gill filaments of golden pomfret were swollen, the mucus secretion function was hyperactive, the respiratory cells of the local gill filaments were swollen, the local blood circulation of the gill filaments was disturbed, the gas exchange and metabolic functions of the local gill filaments were inhibited, and the fish body The decline of the surface defense function and the weakening of the body surface mucus secretion function lead to a rapid increase in the sensitivity of the fish body to seawater parasites, which greatly increases the risk of fish body infection with seawater parasites; the stress continues, and the blood circulation of the golden pomfret gills The obstacle part expands rapidly, and the gill filaments are dark red, seriously affecting the normal or compensatory gas exchange of the gills of the fish body, and the fish body gradually appears hypoxic symptoms. The superposition of these problems at the same time may lead to the death of a large area of ​​golden pomfret, which is very serious.

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