| abstract |
The invention relates to a preparation method of a shrimp and crab compound trace element, belonging to the field of zootechnics feed processing, wherein the raw materials in the formula comprise the following components in percentage by weight: 1.0-10.0% of basic copper chloride, 1.0-15.0% of manganese sulfate, 15.0-35.0% of zinc sulfate, 1.0-15.0% of ferrous sulfate, 1-5.0% of ultramicro calcium iodate, 1.0-5.0% of ultramicro sodium selenite, 5.0-15.0% of ultramicro cobalt chloride and 30.0-55.0% of medical stone, so that the slaughter rate of the shrimps and crabs can be improved, and the nutrition of the shrimps and crabs cannot be greatly reduced. |