EXPERIMENTAL NEUTRALIZATION OF TRICHINELLA IN FUR SKINS DURING PRIMARY PROCESSING

Abstract

Trichinosis is a generic name for invasion diseases caused by roundworm species of Trichinella. Wild carnivorous and omnivorous animals are the prime reservoir of trichinosis infection in nature. Synanthropic centers of infection are formed when hunters introduce Trichinella worms with wild game which subsequently circulate among domestic animals and mouse-like rodents along the food chains. Trichinella larvae found in the carcass and skin of hunted or dead infested animals are resistant to heating. Our study was aimed at deinvasion of fur game fresh skins from Trichinella larvae residual in the muscular tissue of subcutaneous layer (fleshing) through physical (heating) processing. Invasive matter was inactivated in the MDF-type biomedical freezing chamber and exhaust hood at 0.5 meters per second air flow. Helminthologic test was used to determine viability of Trichinella in the skin fleshing. It is recommended to inactivate Trichinella larvae in the subcutaneous muscle tissue of skins from game animals with helminthiasis immediately after skinning or during skin preservation with drying or freezing. Incapsulated Trichinella larvae in residual subcutaneous muscle tissue on skins are resistant to drying and freezing. Inactivation of Trichinella larvae in the fox, raccoon dog, and marten skin fleshing takes 5 days at 4±2°C or 1 - 3 days at 24±2°C. Trichinella inactivation at minus 70±2°C takes 0.5 - 1.0 hour