Anadromous Fish Feed Composition for Smolt Growth and Cataract Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The aquaculture industry faces challenges in providing sustainable fish feed due to limited availability and high costs of fish meal and fish oil, while anadromous fish like salmonids experience reduced feed intake and growth during smoltification and seawater transfer, leading to increased mortality and cataracts, which affect growth rates and profitability.
Innovation Solution
A fish feed formulation for anadromous fish in freshwater containing arginine and histidine in free amino acid or dipeptide form, along with sodium chloride, supports growth and feed intake, and includes specific lighting regimes to enhance smoltification and seawater tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fish meal and fish oil are used as dominant protein sources in dry feed, then nutritional requirements of anadromous fish are met, but availability and cost stability are compromised due to limited fish stock and fluctuating prices
Solution Approach 1:
The patent changes the chemical composition parameters of the feed by incorporating specific amino acids (arginine at 0.5-2.0%, histidine at 0.3-1.5%) and vitamins (vitamin A at 500-2000 UI, vitamin E at 50-200 UI) in optimized concentrations to support fish growth without relying on traditional fish meal and fish oil
Solution Approach 2:
The patent creates a composite feed formulation combining plant-based protein sources with specific amino acid supplements and vitamin preparations to achieve the nutritional profile required for anadromous fish, replacing the traditional marine-based protein source
2Adaptability or versatility
If anadromous fish are transferred from freshwater to seawater during smoltification, then they can access marine environments, but feed intake and growth are reduced leading to increased mortality
Solution Approach 1:
The patent applies preliminary action by incorporating arginine and histidine amino acids along with specific vitamins into the feed before the seawater transfer occurs, preparing the fish physiologically for the transition and reducing stress during smoltification to maintain feed intake and growth
Solution Approach 2:
The patent modifies the feed composition parameters by adding specific amino acids (arginine 0.5-2.0%, histidine 0.3-1.5%) and vitamins (vitamin A 500-2000 UI, vitamin E 50-200 UI) to support the physiological changes required during smoltification and seawater adaptation
3Ease of manufacture
If traditional feed formulations are used without specific amino acid supplementation, then feed production is simpler, but cataracts develop in anadromous fish affecting vision and growth
Solution Approach 1:
The patent changes the chemical composition parameters of the feed by incorporating specific amino acids (arginine at 0.5-2.0%, histidine at 0.3-1.5%) and vitamins (vitamin A at 500-2000 UI, vitamin E at 50-200 UI) in optimized concentrations to support fish growth without relying on traditional fish meal and fish oil
Solution Approach 2:
The patent uses cost-effective plant-based protein sources combined with relatively small amounts of amino acid supplements and vitamin preparations to prevent cataracts, replacing expensive traditional fish meal and fish oil while achieving the same or better health outcomes
Data Source
AI summary
A fish feed for feeding to anadromous fish in freshwater having arginine in free amino acid form or dipeptide form, 0.1 to 7 wt % histidine in free amino acid form or dipeptide form, and 0.2-5 wt % Na+. The fish feed may be fed to anadromous fish to promote growth in the freshwater and/or seawater phase, to promote feed intake and/or to prevent or reduce severity of cataracts.