Incidence of Reinfections with Mycoplasma hyopneumoniae and Actinobacillus pleuropneumoniae in Pig Farms Located in Respiratory-Disease-Free Regions of Switzerland – Identification and Quantification of Risk Factors

[摘要]

[发布日期] 2002-09-30

[关键词] programme.;eradication;area;swine;reinfection;respiratory diseases