| 摘要 |
PURPOSE:To obtain the titled feed capable of preventing occurrence of diseases caused by feed without unbalancing nutriments, by separately dehydrating an animal raw material, e.g. fish leftovers, etc., and vegetable raw material, e.g. bean-curd refuse, etc., mixing both and molding the resultant mixture into the form of pellets. CONSTITUTION:An animal raw material, e.g. fish leftovers, etc., and vegetable raw material, e.g. bean-curd refuse, etc., are respectively heat-treated in separate hermetically sealed vessels while heating in an oil and the dehydrated animal and vegetable raw materials are mixed and molded into the form of pellets and afford a feed for adult fish. In the heat-treatment while heating in the oil, the animal or vegetable oil, etc., is heated at about >=60 deg.C, preferably about 80-150 deg.C and dehydrated under about -10--20mmHg reduced pressure and then dehydration is carried out even into the interior under -740--750mmHg reduced pressure. The dehydrated raw materials are then deoiled in a centrifugal separator, etc. For the bean-curd refuse, the heat-treating temperature is preferably 60-120 deg.C. |
