a) at der skal foretages en optaelling af alle kategorier fjerkrae paa bedriften med angivelse for hver kategori af antallet af dyr, der er doede, antallet af dyr med kliniske symptomer og antallet af dyr uden kliniske symptomer.
(a) a record be made of all categories of poultry on the holding showing in respect of each of the categories the numbers of poultry which have died, which show clinical signs, and which show no signs.