2023-08-31 14:22:44
Title: Research Reveals Insights into Streptococci, Spot Disease, and ORT Bacteria in Poultry Farming
Date: [Current Date]
In a recent study conducted by Royal GD on behalf of Avined, researchers delved into the prevalence and impact of streptococci, spot disease, and ORT bacteria in poultry farming. The findings shed light on the secondary nature of streptococci infections in chickens and highlighted the role of other infections, such as E. coli or mottle disease, in poultry health.
The research indicated that streptococci are not commonly found as the primary cause of issues in poultry sections. Out of 49 entries over a 12-year period where streptococcus was cited as the main diagnosis, Streptococcus gallolyticus was identified as the most prevalent species. Notably, streptococcus was predominantly a secondary cause of failure in chickens, with other infections being the primary concern.
During the study, 25 laying farms were randomly examined to assess the presence of Streptococcus suis, a pathogen known for affecting pigs. Surprisingly, this bacterium was not detected on any of the farms. On the other hand, the presence of Streptococcus equi zooepidemicus, which differs genetically from strains found in other animals and humans, was identified twice.
Spot disease, caused by the bacteria Erysipelothrix rhusiopathiae, was also investigated. Practical research conducted in 2019 revealed that failure could occur even after vaccination, potentially due to differences between the vaccine and the bacteria that caused the outbreak. The presence of various serotypes in spot disease suggests a potential relationship between serotype and immune development, which warrants further exploration.
The study also explored the role of the bacterium Ornithobacterium rhinotracheale (ORT) in causing respiratory abnormalities and subsequent growth reduction and failure in poultry. While no clear link between the genotype of the bacteria and the disease was established, the research highlighted that viral infections such as Gumboro and Marek could potentially increase the risk of developing a severe disease picture. However, these infections were not consistently detected in the study, emphasizing the need for further research.
This research, conducted by Royal GD on behalf of Avined, provides valuable insights into the secondary nature of streptococci infections in chickens, the complexities surrounding spot disease vaccinations, and the potential role of viral infections in exacerbating ORT-related health issues. These findings will contribute to the ongoing efforts to improve poultry farming practices and ensure the health and well-being of poultry populations.
Note: This article is copyrighted by AgriHolland B.V.]
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