genotoxic effects

acute toxicity

ache activity

nerve agents

broiler chicks

Toxicology

Chickens were exposed to dichlorvos vapour from strips continually or intermittently for three weeks. During exposure dichlorvos in air and cholinesterase activity in plasma were determined. At the end brain-acetyl-cholinesterase activity was assayed.  The chicken exhibits a sensitivity towards dichlorvos comparable with man. With plasma cholinesterase activity as a criterion, a single strip was found to produce just no effect if exposure was uninterrupted or lasted 16 h every day. Comparison with dichlorvos aerosol sprays showed that excessive spraying did not produce consistent effects after 5 days. In an experiment of longer duration a decrease of plasma cholinesterase activity was found. With sprays, more dichlorvos was needed to produce the same exposure than with strips.

The influence of dichlorvos from strips or sprays on cholinesterase activity in chicken