INVESTIGATIONS ON THE EFFECTIVENESS OF DIFFERENT DISINFECTANTS ON THEBASIS OF P-CHLORINE-M-CRESOL AGAINST EGGS OF ASCARIS-SUUM UNDER LABORATORY CONDITIONS

The devitalizing effectiveness of 5 patterns of the desinfectant Neopr edisan (active principle: p-chlorine-m-cresol) was tested to eggs of A scaris suum in coincidence with the ''guidelines for the testing of ch emical desinfectants'' of the German Veterinary Society (GVS). In the suspension-test all examined patterns indicated 100% inhibition of dev elopment Ascaris suum-eggs. In the germ carrier test all patterns were in conformity with the necessities of the GVS-guidelines. Also in the modificated testing method with a temperature in the refrigerator of +10 degrees C Neopredisan showed a reliable (100%) efficacy. Toe inhib ition of development was clearly delayed with an admixture of 20% faec es to the suspension of eggs. In a suspension-test with Neopredisan 14 0 in 3% solution after 15 minutes with embryonated eggs a nearly 100% ovicid and larvicid respectively efficacy was proved. The investigatio ns show, Neopredisan is value as a suitable desinfectant in the comple x of the combat against ascariosis in the breeding of pigs.