Natural additive for improving anti-heat stress ability of whitmania pigra whitman

Abstract

The invention provides a natural additive for improving the anti-heat stress ability of whitmania pigra whitman.The invention aims to provide a breeding method for remarkbly enhancing the immunity ofthe whitmania pigra whitman, improving the anti-heat stress ability of the whitmania pigra whitman, promoting the growth of the whitmania pigra whitman, and increasing the economic benefit on the basis of existing whitmania pigra whitman breeding.Compared with an existing indoor high-density breeding technology for the whitmania pigra whitman, through the adoption of the natural additive, the survival rate of the whitmania pigra whitman is increased by about 40% maximally under heat stress, and the yield of the whitmania pigra whitman is increased by about 65% maximally at the same time.The economic benefit of whitmania pigra whitman breeding is increased without expanding the breeding area of the whitmania pigra whitman.

Description

[0001] 1. Technical field [0002] The invention relates to a natural additive for improving the heat stress resistance of leeches, which belongs to the field of medicinal animal breeding. [0003] 2. Background technology [0004] Leech (Whitmania pigra Whitman) is one of the basic animals of leeches, a traditional Chinese medicinal material. In recent years, a lot of research has been done on the biological characteristics, reproductive development, digestive physiology and respiratory physiology of leeches. On this basis, outdoor artificial breeding of leeches has been successful. Since the suitable growth temperature for leeches is around 25°C, during the breeding process, it was found that when the water temperature exceeds 30°C, the leeches will lose their appetite and grow slowly, especially when the sudden high temperature in summer will cause a large number of deaths, resulting in instability of artificial breeding production , seriously affecting its economic efficie...

AI Technical Summary

Problems solved by technology

Studies have found that astragalus polysaccharides can enhance animal antioxidant capacity, anti-inflammatory and antibacterial, improve immune performance, improve production performance, and improve intestinal development. In recent years, it has been widely used in the breeding of fish, crustaceans and mollusks. , but there are few reports that it can improve the heat stress ability of animals, and there are no research reports on leech breeding.

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