Relationships between selected climatic factors in fattening units and their influence on the development of respiratory diseases in swine

actinobacillus pleuropneumoniae air temperature carbon dioxide cerdo climatic factors cuadras dioxyde de carbone enfermedades respiratorias environmental factors facteur climatique facteur du milieu factores ambientales humedad humidity maladie respiratoire mycoplasma hyopneumoniae pathogenese pathogenesis porcin respiratory diseases stables swine temperatura del aire