Farms.com Home   News

The Role of Co-infections in M. Hyopneumoniae Outbreaks among Heavy Fattening Pigs: a Field Study

Abstract: The role of co-infections in M. hyopneumoniae outbreaks among heavy fattening pigs: a field study

Little is known about how co-infections and genotype dynamics affect Mycoplasma hyopneumoniae infection in fattening pigs. This study was aimed at assessing the role of co-infections in M. hyopneumoniae outbreaks, their influence on the presence of M. hyopneumoniae genotypes and their impact on consequent lung lesions. Tracheobronchial swabs (TBS) from 300 finishers were collected from 10 farms at the onset of enzootic pneumonia outbreaks and 1 month later, sampling of 3 groups per farm: Group A showed clinical signs first, Group B was housed near Group A, and Group C was located in a different building. Pigs' lungs were scored at the slaughterhouse. TBS were tested for the main pathogens involved in respiratory diseases, and samples positive for M. hyopneumoniae were genotyped by multiple-locus variable-number tandem repeat analysis (MLVA). Pigs in Group A showed the highest prevalence and load of M. hyopneumoniae. A positive association was detected between M. hyopneumoniae and Mycoplasma hyorhinis, whereas Actinobacillus pleuropneumoniae was more frequent when the M. hyopneumoniae load was higher.

Click here to see more...

Trending Video

Better Late Than Never: Getting Sheep Into Breeding Groups!

Video: Better Late Than Never: Getting Sheep Into Breeding Groups!

Everything is running behind schedule this year on our sheep farm, and that includes getting the ewes and rams into their breeding groups. But better late than never, as today we get all the Dorset and Suffolk ewes dewormed, sorted, and put into their designated breeding pens. We also have one Suffolk ram in with his ewes, and hopefully, we will have another four rams in their groups tomorrow. A busy day sheep farming in this episode! We hope you enjoy ??