Position:Feed Science and Technology

The research that fish meal substitute searchs

From;    Author:Stand originally
With cheap and rich use vegetable protein source and share of one-celled albumen cause or substituting fish meal completely is feasible:

Protein is the main nutrition material that fish grows, the 2 that the protein content of aquatic product feed is cultivate birds commonly - 4 times, the 25 % that takes a recipe normally - 50 % , more even.

Having decisive effect to live and growing of fish because of protein, the protein content of feed of culturist height attention with respect to of course. Simple will protein content regarded as the only index that evaluates quality of aquatic product feed, it is not comprehensive, unscientific. The expert considers to think, fish photographs the feed that feed in, protein can absorb 28 % only. The overmuch protein content in feed creates waste not only, still polluted severely breed an environment.

Protein cent is animal sex albumen and plant sex albumen two kinds big. Come up from essence tell, fish uses be amino to needing acid to protein absorption, because protein is made by amino acid,this is. Bone dust of fish meal, flesh and hematic pink contain rich animal sex protein, the amino acid that contains as a result of these albumen place and fish grow needs amino acid is similar, so, animal sex albumen is the optimal raw material of aquatic product feed. But vegetable protein is the biggest albumen source after all, the fish that just contains is indispensible amino acid is less, fish is absorbed to his assimilation as animal albumen, this is the prime cause of albumen of animal of lay particular stress on of aquatic product feed. Now, the scientist has been refined through enzymatic solution, dregs of rice the beans albumen of peptide of translate into few, obtain replace animal albumen, reduce the favorable result that depends on to fish meal.

Current, feed of albumen of animal of our country aquatic product basically relies on fish meal, had not cast off “ essentially the condition with piscine pisciculture ” . And the developed country such as the United States already replaced fish meal through synthesizing protein, not only reduced fish meal to use up, still vacate quite the amount is used at exit.

According to concerning document, the fleshy bone meal that 27 % uses in rainbow trout feed is replaced arrange fish meal of 50 % , to its weightening finish and feed efficiency do not have distinct effect, the fleshy bone dust after adding amino acid still can regard the exclusive albumen of rainbow trout feed as the source. The fleshy bone meal that 20 % uses in feed replaces fish meal to grow to salmon impact of profit of all without exception; The fish meal of the bone dust of flesh of low ash content that contains 47 % and 12 % casts the kiss that feed a needle perch and cast feed the piscine photograph that contains feed of % of fish meal 47 to compare nonsignificant difference. Content of protein of fleshy bone dust is 45 % - 50 % , the mineral content such as iron, calcic, phosphor is very high, the source of animal sex albumen that becomes fodder with fleshy bone dust raises prawn, raised the digestive absorptivity of feed not only, promoted shrimp effectively to grow development, and reduced the cost that raise shrimp apparently. Somebody replaces fish meal and fat with birds wool pink and birds oil kind breed salmon and eel, gained a success.
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