Comparative efficacy of oil solution and wettable powder of lambda-cyhalothrin to naturally occurring Ornithonyssus sylviarum infestation of chickens
2009
Pan, Baoliang | Liang, Daming | Zhang, Yafeng | Wang, Hailiang | Wang, Ming
The Northern Fowl Mite (NFM), Ornithonyssus sylviarum, is one of the most important and common pests of poultry. Most of available pesticides applied in the NFM control are formulated as wettable powder or emulsifiable concentrate and require to be diluted with water before use. As water has very low affinity to bird feathers, a part of the diluted pesticide will fall on the ground, on the cages, on feed bins or drift in the air upon application, which becomes a source of a potential harm to administrative workers and birds. In contrast to water, an oil solution of pesticide has a higher affinity for feathers and can stay on the feather for a longer time, and maybe provide a high efficacy and be effective for a longer, persistent period against the NFM. In the present study, the efficacy of oil solution and wettable powder of lambda-cyhalothrin to NFM in breeders was compared; the results showed that while spraying lambda-cyhalothrin wettable powder on birds could effectively control NFM, painting lambda-cyhalothrin oil solution on birds gave complete control of NFM for at least 6 weeks. In the application of lambda-cyhalothrin oil solution, no containment of pesticide to cages, feed bin and no pesticide drifting in the air was observed. These results indicated that lambda-cyhalothrin oil solution has a potential to become an effective and safe formulation to control NFM in breeders.
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