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Questions and Answers
Improvements in housing and ______ can reduce the economic effects of mycoplasmal pneumonia in pigs.
husbandry
“All-in/all-out” management of pigs from birth to ______ is extremely effective at reducing negative effects of disease;
market
Commercial inactivated mycoplasmal ______ consist of adjuvanted whole-cell preparations.
bacterins
Bacterins induce protection against development of gross ______ and significantly reduce clinical signs (coughing) in growing pigs.
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Mass treatment with ______ effective against Mycoplasma spp helps to control the severity of signs.
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Gilt acclimation practices involve a uniform and controlled exposure of M hyopneumoniae in replacement females at least ______ months prior to first farrowing.
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Gilt acclimation has been mainly used to “start the clock” in ______ programs relying on the known end of bacterial persistence.
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Gilt acclimation is also used to provide ______ control in endemically infected farms.
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Starting with foundation stock free of ______ pneumonia and adopting strict precautions against direct and indirect contact with pigs from other herds is advisable.
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Most herds free of ______ pneumonia were established by repopulation or by partial depopulation in the USA and parts of Europe.
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M ______-free herds have been established by segregated early weaning, herd closure, and medication, or by whole-herd medication.
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Diagnostic monitoring of herds presumably free of ______ pneumonia can be difficult.
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Study Notes
Reducing Economic Effects of Mycoplasmal Pneumonia
- Improving housing and husbandry, particularly ventilation and space allowance, can reduce the economic effects of mycoplasmal pneumonia in pigs.
Effective Management Practices
- "All-in/all-out" management of pigs from birth to market reduces the negative effects of disease, improving growth performance and reducing lung lesions.
Vaccination and Treatment
- Commercial inactivated mycoplasmal bacterins (adjuvanted whole-cell preparations) induce protection against gross lesions and reduce clinical signs (coughing) in growing pigs.
- Vaccination does not prevent infection.
- Mass treatment with antibiotics effective against Mycoplasma spp helps control the severity of signs when the disease first enters a herd.
- Treatment of individual pigs with antimicrobials usually results in remission, presumably by controlling secondary bacteria.
Preventing Infection in Piglets
- Prefarrowing management, vaccination with M hyopneumoniae vaccines, or antimicrobial treatment of dams significantly reduces colonization of suckling piglets, leading to fewer respiratory disease issues in downstream flows.
Gilt Acclimation
- Gilt acclimation practices, where replacement females are uniformly and controlledly exposed to M hyopneumoniae at least 8 months prior to first farrowing, are used to provide disease control in endemically infected farms.
Eradication and Control
- Establishing herds free of mycoplasmal pneumonia can be done by starting with foundation stock free of the disease and adopting strict precautions against direct and indirect contact with pigs from other herds.
- Gilt acclimation is also used to "start the clock" in eradication programs, relying on the known end of bacterial persistence.
- Repopulation or partial depopulation can be used to establish M hyopneumoniae-free herds, with a combined success rate of approximately 70%.
- Diagnostic monitoring of herds free of mycoplasmal pneumonia can be difficult, and it is hypothesized that the organism may coexist within the population at an undetectable level for extended periods.
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Description
This quiz covers the effects of mycoplasmal pneumonia in pigs and how it can be reduced through improvements in housing and management. Learn about the benefits of 'all-in/all-out' management and the role of commercial bacterins in inducing protection.
