[Theraphy and prophylaxis of respiratory syndromes in the calf. Treatment with acetylcysteine]

allevamento zootecnico intensivo antibodies anticorpi anticorps anticuerpos calves control de enfermedades crianza intensiva disease control drugs enfermedades respiratorias epitelio epithelium farmaci hydrogen idrogeno intensive husbandry lungs maladie respiratoire malattie respiratorie medicamentos moco morbidite morbidity morbosidad muco mucus pathogens patogeni peso poids poumon pulmones respiratory diseases terapia ternero therapy veau vitelli weight