4. Feed breed protein is fish grows an indispensible the mainest nurture is qualitative, protein content also is the main index of piscine feed quality. To same kind of fish, the feed with protein high content can decrease appropriately cast feed a volume, and the feed with protein low content should increase cast feed a volume. Because at present piscine feed does not have uniform nutrient standard, the protein content of piscine feed is uneven, should choose the feed that normal manufacturer produces.
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