Executive Summary
Aquaculture is rapidly evolving to meet global protein demands while minimizing environmental impact. This whitepaper explores the integration of AB PALU – a targeted multi-enzyme blend produced by aseptic fermentation of Bacillus subtilis. AB PALU contains stabilized enzymes produced during fermentation including – Protease, Amylase, Urease, and Lipase. Used in aquaculture, AB PALU can improve nutrient digestibility, reduce waste outputs, and enhance growth performance in farmed fish and shrimp. The blend offers a biologically sustainable alternative to traditional feed additives, aligning with circular economy principles and precision nutrition strategies.
Introduction
- Context: With fishmeal prices rising and sustainability pressures mounting, aquaculture is shifting toward plant-based and alternative feed ingredients.
- Challenge: These ingredients often contain anti-nutritional factors and complex macromolecules that hinder digestibility.
- Solution: Enzyme supplementation can pre-digest feed components, improving nutrient bioavailability and reducing environmental load.
Enzyme Functions and Synergy
| Enzyme | Substrate Targeted | Function in Aquaculture | Benefits |
| Protease | Proteins | Hydrolyzes peptide bonds | Improves amino acid absorption, reduces nitrogen excretion |
| Amylase | Starch | Breaks down polysaccharides | Enhances energy availability from plant-based feeds |
| Urease | Urea | Converts urea to ammonia | Supports nitrogen cycling, reduces ammonia spikes |
| Lipase | Lipids | Hydrolyzes fats into fatty acids | Improves lipid utilization, supports growth and pigmentation |
These enzymes act synergistically to optimize digestion across macronutrient classes, especially in early life stages when endogenous enzyme production is limited.
Performance Outcomes
- Growth Metrics: Studies show improved feed conversion ratios (FCR), weight gain, and protein efficiency ratios (PER) with enzyme supplementation.
- Environmental Impact: Reduced nitrogen and phosphorus excretion, leading to better water quality and lower eutrophication risk.
- Economic Feasibility: Lower reliance on fishmeal, improved feed efficiency, and reduced mortality rates contribute to cost savings.
- Sustainability and Regulatory Considerations
- Eco-Friendly: Enzymes are biodegradable and reduce the need for antibiotics and chemical additives.
Conclusion
The strategic use of a multi-enzyme blend in aquaculture feed represents a powerful tool for improving nutrient utilization, reducing waste, and supporting sustainable growth. As enzyme technologies advance, their role in precision aquaculture will only expand—offering a biologically elegant solution to some of the industry’s most pressing challenges.