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Updated: Aug 19, 2026
A Method for Evaluating Insecticide Efficacy against Bed Bug, Cimex lectularius, Eggs and First Instars
Published on: March 15, 2017
[The effectiveness of different disinfectants based on p-chloro-m-cresol against Ascaris suum eggs under laboratory
1Institut für Parasitologie und Tropenveterinärmedizin, Freien Universität Berlin.
Abstract:
The devitalizing effectiveness of 5 patterns of the disinfectant Neopredisan (active principle: p-chlorine-m-cresol) was tested to eggs of Ascaris suum in coincidence with the "guidelines for the testing of chemical disinfectants" of the German Veterinary Society (GVS). In the suspension-test all examined patterns indicated a 100% inhibition of development Ascaris suum-eggs. In the germ carrier test all patterns were in conformity with the necessities of the GVS-guidelines. Also in the modified testing method with a temperature in the refrigerator of +10 degrees C Neopredisan showed a reliable (100%) efficacy. The inhibition of development was clearly delayed with an admixture of 20% faeces to the suspension of eggs. In a suspension-test with Neopredisan 140 in 3% solution after 15 minutes with embryonated eggs a nearly 100% ovicide and larvicide respectively efficacy was proved. The investigations show, Neopredisan is of value as a suitable disinfectant in the complex of the combat against ascariasis in the breeding of pigs.
Insights
Neopredisan effectively eliminates Ascaris suum eggs, proving 100% efficacy in various tests. This disinfectant is valuable for controlling ascariasis in pig breeding operations.
Area of Science:
- Veterinary Parasitology
- Microbiology
- Disinfectant Efficacy Testing
Context:
- Ascariasis, caused by Ascaris suum, is a significant parasitic disease in swine.
- Effective disinfectants are crucial for controlling parasite transmission in pig farming.
- The German Veterinary Society (GVS) provides guidelines for disinfectant testing.
Purpose:
- To evaluate the devitalizing effectiveness of Neopredisan against Ascaris suum eggs.
- To assess Neopredisan's conformity with GVS guidelines for chemical disinfectants.
- To determine Neopredisan's suitability for controlling ascariasis in swine.
Summary:
- Neopredisan demonstrated 100% inhibition of Ascaris suum egg development in suspension tests.
- All tested Neopredisan patterns met GVS requirements in germ carrier tests.
- Effective ovicidal and larvicidal activity was confirmed, even under refrigerated conditions and with fecal contamination.
Impact:
- Neopredisan is confirmed as a valuable disinfectant for combating ascariasis in pig breeding.
- The study supports the use of Neopredisan in integrated parasite control programs for swine.
- Findings contribute to best practices in biosecurity and disease prevention in livestock farming.
