Benefits of Yeast Extract in Aquaculture – A Natural Aquafeed Additive

      In modern aquaculture, including fish and shrimp farming, improving growth performance, immunity, and survival rate is essential. With increasing restrictions on antibiotics, safe and effective aquafeed additives are in high demand.
Among them, yeast extract has become a valuable solution due to its nutritional and functional properties, supporting sustainable aquaculture development.

1. Main Components of Yeast Extract

Yeast extract is produced from high-quality yeast through autolysis or enzymatic hydrolysis. It mainly contains:

• Small peptides and proteins: Easily absorbed, boosting growth in fish and shrimp.

• Nucleotides: Enhance gut development and strengthen immunity.

• Vitamins and minerals: Support metabolism and overall health.

• β-glucans and mannan oligosaccharides (MOS): Improve immune response and gut health.

2. Benefits of Yeast Extract in Aquaculture

1. Promotes Growth and Feed Efficiency
   The bioactive proteins in yeast extract improve feed conversion ratio (FCR), supporting faster growth in aquatic species.

2. Enhances Immunity and Disease Resistance
   β-glucans and MOS stimulate the immune system, helping fish and shrimp resist pathogens and reducing mortality.

3. Supports Gut Health
   Nucleotides and prebiotics improve gut microbiota balance, reducing enteritis and enhancing survival.

4. Reduces Antibiotic Dependence
   By improving natural immunity and gut health, yeast extract minimizes the need for antibiotics, promoting sustainable aquaculture.

5. Boosts Farming Profitability
   Higher survival rates, faster growth, and lower disease losses make yeast extract a cost-effective aquafeed additive.

3. Conclusion

       As a natural and safe aquafeed additive, yeast extract is widely used in fish and shrimp farming. It not only promotes growth and immunity but also supports gut health, making it an ideal choice for sustainable aquaculture and profitability improvement.