Selective herbicides, very widely used in the UK and in Europe.


[affected.gif] Animals most affected
Cattle, sheep, dogs.


[etiology.gif] Etiology
Direct ingestion of the agrochemical product or of recently treated vegetation. There is also a risk of poisoning by plants: this occurs through repeated use of triazines in areas of monoculture (such as maize). This widespread practice has resulted in the emergence of plants or weeds (deadly nightshade, dog's mercury, amaranth) resistant to the chemical, leading to a situation where hay or silage can be contaminated with 10-40% of these plants that are themselves toxic to animals. It is currently a very serious problem.


Compounds in this category
Ametryn, anilazine, atrazine, cyanazine, desmetryn, metamitrone, metribuzin, pro-metryn, secbumeton, simazine, terbumeton, terbuthylazine, terbutryn.


[toxic.gif] Toxicity
Generally not considered to be very toxic. For toxic doses, see entries for individual compounds.


[clinical.gif] Clinical features
Few specific characteristics:


Generally good prognosis, rarely fatal.


[lesions.gif] Lesions
Non-specific and not pronounced:


[treatm~1.gif] Treatment
No antidote. Symptomatic care only:




[labinv~1.gif]
Laboratory investigations

Important to have extremely fresh samples for analysis.