Dr. Kassai Tibor szerk.: Parasitologia Hungarica 1. (Budapest, 1968)

allowed the invasion and establishment in the

5 host of saprophytic mycobacteria which were responsible for tuberculin sensitivity.To test this assumption 26 young cattle (8-10 months

), derived from stock reacting negatively to both avian and mammalian tuberculin, were infected with liver fluke by being fed hay containing cercariae. They were then dosed once with 0.6 g M. minetti (17 animals), or 0.6 g M. giae (9 animals). Both mammalian and avian tuberculin tests were performed 2.5, 4 and 7 months later.A control group of 14 animals (10-14 months) was orally infected with M. giae and tuberculin tested in the 3rd week after infection and again 2 months later. The following conclusions were drawn: 1. Following a single oral infection with M. minetti or M. giae the reaction of cattle to avaian tuberculin is strikingly altered. 2. M. giae has a greater sensitizing effect than M. minetti

. 3. In the group suffering from fasciolosis and infected with M

. giae positive reactions were

• obtained from more animals (87.5 $>) and for a longer period (during 7 months) than in the fasciolosis-free group (28.5 i° for 2 months). 4. The only role of the liver fluke in- developing sensitivity to tuberculin is* that during the migration of larvae the lesions produced in the intestinal wall, or elsewhere, enable saprophytic mycobacteria to settle in the tissues and to exert their allergenic effect. The body proteins of liver flukes do not participate in the process of sensitization to tuberculin. (Central Veterinary Inst., Budapest XIV. Tábornok u. 2.) KACSÓ, A. - MÓRICZ, L.

: A mezei pocok elleni védekezés uj technológiája (Reue Technologie beim Schutz gegen Feldmaus /Microtus arvalis Pall./) Növényvédelem, ' Budapest 4. 115-120. 1968. Az uj védekezési, módszer kidolgozását az tette szükségessé, hogy megóvjuk a haszonállatokat, a fogolyt és a fácánt a csalétekkel való mérgeződéstől, egyben a csalétek kirakása is gépesitve legyen. Az Arvalln

t (l ?6-os cinkfoszfid) a pocokkárt szenvedett területen a szükségletnek megfelelő mennyiségben,