[In spite of high mechanized farms still a problem. Coli diarrhoea in the farrowing pen]

antibodies anticorps anticuerpos calentamiento case de mise bas cerdas chauffage cleaning control de enfermedades diarrea diarrhoea disease control disinfection escherichia farrowing pens heating higiene veterinaria immunity inmunidad limpieza nettoyage piglets porcelet sows truie vaccination veterinary hygiene