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per limitare i rischi sanitari è bisogno controllare i vettori di contaminazione (lavoratori, visitatori, i mangimi, l’acqua e la vermine).
to have a good sanitary result, the contamination has to be controlled (personal, visitors, food, water and animals). the principal risk is the contamination from the egg if it develops and its diffuses to the hatchery.
最后更新: 2018-02-13
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