fish are able to use more of their food intake for growth than mammals . explain
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fish do not have to expend energy to change ammonia to urea or uric acid, they do not have to pay the energy expense to use protein for food as birds or mammals do. Since fish do not pay a penalty for eating protein, they can direct more of the energy in food towards production
Explanation:
it is possible to suggest that fish can use its dietary protein to maintain ... Most animals including fish species require 10 essential amino acids namely arginine ... showed a better growth performance than 25% crude protein diets (20). ... which could explain the few studies regards mineral requirements in fish.
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