What is the role of yeast extract in fish feed

1、 Yeast extract can promote fish growth
    Yeast extract contains abundant nutrients such as amino acids, nucleic acids, and polysaccharides, which can promote the growth and development of fish, increase body weight and length. In addition, yeast extract can also increase the appetite and food intake of fish, thereby better utilizing nutrients in feed.

2、 Yeast extract can enhance fish immunity
    Yeast extract contains various bioactive substances, such as β - glucan, yeast polysaccharides, nucleic acids, etc. These substances can activate the immune system of fish, promote the generation and activity of immune cells, enhance disease resistance, and improve disease resistance and immunity. Meanwhile, yeast extract can also inhibit the growth and reproduction of some harmful bacteria, thereby reducing the damage of pathogenic microorganisms to fish.

3、 Yeast extract can improve the digestion and absorption capacity of fish
    Yeast extract contains various yeast and yeast metabolites, which can promote the balance of intestinal microbiota in fish, increase the number of beneficial bacteria, thereby improving the digestion and absorption capacity of fish and improving excretion function. At the same time, yeast extract can also improve the utilization rate of nutrients such as protein, fat, and carbohydrates in fish feed, thereby reducing feed costs and improving economic benefits.

    In summary, yeast extract as a fish feed additive has multiple effects, including promoting fish growth and health, enhancing immunity, strengthening disease resistance, improving digestion and absorption capacity, reducing feed costs, and increasing economic benefits. Therefore, the application prospects of yeast extract in fish farming are broad and worthy of further research and promotion.

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