Suitability of modified pig bristles for extruded feed mixtures for carp fry

Abstract

Tests were performed with four extruded feed mixtures balanced at an isonitrogen and isoenergetic level. The experimental feeds contained modified pig bristle, added at the rate of 5%, 10% and 15% in place of fish meal. Value of the feeds was estimated using chemical methods and growth performance in a feeding test carried out in experimental fish ponds. It was found that carp fry used in a most efficient way these feeds which contained 15 % of prepared pig bristles. The prepared pig bristles used in the experiment proved to be a valuable source of proteins and can be added instead of fish meal to carp fry feeds.