ANIMAL HEALTH Respiratory
نویسندگان
چکیده
Respiratory diseases of swine cause major economic losses. In many cases, respiratory disease losses are not recognized because death losses are low and reduced feed efficiencies are the primary effect. The major infectious organisms currently associated with swine pneumonias are Mycoplasma hyopneumoniae, Pasteurella multocida, Bordetella bronchiseptica, Hemophilus pleuropneumoniae, Hemophilus parasuis, swine influenza and pseudorabies viruses. Other disease conditions such as salmonella, streptococcus may cause pneumonia as a secondary problem. Roundworm and lungworm migration may intensify the severity of pneumonia by
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