To promote the green development of the aquaculture industry, it is necessary to start with natural plant extracts, which can promote the green and healthy development of the aquaculture industry.
Plant extracts are natural, efficient, rich in resources, and diversified in performance, and do not cause drug-induced diseases and do not pollute the environment. , as a new type of feed additive is gradually favored.
Plant extracts can be used as feed additives to prevent and control aquatic animal diseases and reduce the use of antibiotics and chemical drugs.
In addition, plant extracts have significant effects in attracting food, promoting body metabolism and secretion of digestive enzymes, improving immunity, improving breeding environment, and improving reproduction.
Yuccashidigera (Yuccashidigera) belongs to the agave family, it is a small perennial evergreen shrub native to the arid desert regions of North America.
Folk medicine believes that yucca has anti-arthritic and anti-inflammatory properties .
Indigenous peoples used yucca as a laxative and skin care product, and even eaten it; Navajo Indians used it to treat sunburns and scars;
in northern New Mexico, yucca leaves and roots were used to treat asthma and headaches; and locals believed Yucca is also effective against rheumatism, diabetes, and common ailments such as psoriasis, dandruff, hair loss, and skin ulcers.
In addition, yucca is rich in polyphenols, which can reduce platelet aggregation and can be used in human diet and health care to prevent cardiovascular and inflammatory diseases.
Yucca extract (Yuccashidigeraextract, YE) is made of yucca, extracted and concentrated with alcohol solvent, and then extracted with water and n-butanol to remove impurities. thing.
There are currently two types of yucca products on the market: juice and powder.
Among them, the liquid yucca juice is made by physical pressing and concentration; the solid powder is made by spraying the liquid yucca juice on the carrier and drying, and the other is directly drying the plant and then grinding it, which contains all the yucca juice.
Active ingredients mainly include steroid saponins, polysaccharides and polyphenols.
1. Promote growth
Plant extracts are rich in nutrients, such as protein, amino acids, carbohydrates, minerals, vitamins, oils, and plant pigments, which can promote the growth of fish.
At present, many studies have confirmed that plant extracts can promote growth and improve feed utilization. Studies show that adding yucca extract to aquafeed
It has a growth-promoting effect on farmed animals, especially in a high-density breeding environment. It can be used as a growth promoter to improve growth performance and feed use.
2. Enhance immune function
Plant extracts contain a large number of immune active substances, such as polysaccharides, organic acids, glycosides, alkaloids, terpenes and alcohols.
Supplementation in the diet can improve the body's immunity and maintain the balance of intestinal flora.
Studies have shown that adding yucca extract can inhibit the growth of Vibrio and prevent the invasion of shrimp white spot virus, thereby improving the survival rate of shrimp.
Increase the height of the intestinal villi and the thickness of the mucosa, increase the number of mature epithelial cells, and ensure intestinal health.
3. Antioxidant
The antioxidant components in plant extracts are polyphenols, flavonoids, saponins, terpenes, polysaccharides, organic acids, etc.
These components can protect the body and resist oxidation by removing free radicals in animals and reducing oxidative substances. damage effect.
Yucca extract can not only improve the function of the hydrolysis system of fish and shrimp, but also significantly enhance the antioxidant system and enhance immunity.
4. Improve aquaculture water
Plant extracts can significantly reduce the total ammonia nitrogen level in the aquaculture environment and during transportation, and improve the survival rate of farmed animals.
The effectiveness of yucca extract in eliminating ammonia in water is related to the initial mass concentration of ammonia in water, the mass concentration of yucca extract and the elimination time.
The rate of ammonia reduction by yucca extract was inversely correlated with the initial mass concentration of ammonia, and positively correlated with the mass concentration of yucca extract
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