Carps were fed four dry diets, each containing 30% (by weight) krill meal, poultry blood meal, hydrolized feather meal or poultry by-product meal. On the base of these feeding trials it is concluded that poultry by-product meal can be successfully incorporated into pelleted feeds for carp. The replacement of fish meal or krill meal by poultry by-product meal resulted in better growth and feed efficiency. The nutritional value of feather meal in carp appears to be much better than poultry blood meal