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however, considerable research continues to be con ducted to determine the teal effects of pesticides on the aquatic environment and the species which live in it.
omfattande forskning bedrivs dock fortfarande för att verkligen fastställa vilken inverkan bekämpningsmedel har på vatten miljön och på de arter som lever där.
efficacy has been evaluated on the basis of preliminary results in chickens and ringed teals. -in chickens, reduction of clinical signs, mortality, excretion and transmission of virus after challenge were shown by two weeks after a single dose vaccination. -in ducks, reduction of excretion and transmission of virus after challenge were shown by two weeks after a single dose vaccination.
- efter experimentell infektion hos andfåglar påvisades reduktion av utsöndring och överföring av