Yeast Hydrolysate: Applications and Benefits in Aquaculture

1. What is Yeast Hydrolysate?

Yeast hydrolysate is a bioactive protein product derived from yeast (Saccharomyces cerevisiae) through enzymatic hydrolysis or autolysis. It contains abundant small peptides, free amino acids, nucleotides, B vitamins, and trace elements, offering excellent nutritional and functional properties.

2. Applications of Yeast Hydrolysate in Aquaculture

1. Improves Feed Utilization and Growth Performance
   Rich in small peptides and amino acids, yeast hydrolysate enhances digestibility and nutrient absorption, leading to better feed conversion and faster growth in fish, shrimp, and crabs.

2. Enhances Immunity and Stress Resistance
   Components like β-glucans, mannan oligosaccharides, and nucleotides stimulate the immune system, improving disease resistance and reducing mortality under stress or environmental fluctuations.

3. Promotes Gut Health and Microbial Balance
   Acting as a prebiotic, yeast hydrolysate supports beneficial gut flora, suppresses harmful bacteria, and enhances overall nutrient absorption.

4. Improves Water Quality and Environmental Stability
   By enhancing digestion and reducing waste output, it helps lower ammonia and nitrite levels, maintaining a cleaner and more stable aquaculture environment.

3. Economic and Sustainability Advantages

• Increases feed efficiency and reduces feed cost

• Decreases antibiotic dependence, supporting eco-friendly farming

• Enhances survival rates and overall productivity

• Naturally sourced, sustainable, safe, and environmentally friendly

4. Conclusion

Yeast hydrolysate is an effective, natural feed additive that plays a vital role in modern aquaculture. Its application supports better growth, health, and environmental outcomes, contributing to a more sustainable and profitable aquaculture industry.