Rodríguez-Buenfil JC, Alvarez-Fleites MJ, Gómez-Medina RM

Language: Spanish
References: 11
Page: 271-275
PDF size: 25.53 Kb.

ABSTRACT

Introduction. Porcine proliferative enteropathy is a worlwide emergent disease caused by an intracellular bacterium recently named Lawsonia intracellularis. This bacterium affects all animals however, a higher frequency is observed in fattening pigs. There is no information about presence and distribution of this disease in Yucatan.
Objective. To detect the presence of Lawsonia intracellularis in fattening pigs farms in the state of Yucatan.
Material and Methods. A total of 20 pig farms were selected for convenience. Ten sampling units were selected as representative from each farm, considering a prevalence of 25%, a confidence level of 95% and a population size of 7000 animals. Each unit was formed collecting feces from 4 animals whose weight was between 30 and 90 Kg. The Polimerase Chain Reaction technique was used in the laboratory.
Results. From the total of farms studied 8 were positive to the presence of Lawsonia intracellularis within the fattening pigs population. This represents 40% of the affected farms with prevalences ≥ 25%. With respect to the total of sampling units 23 (13%) were positive and 174 (87%) were negative. A higher frequency of positive farms with population › 7000 fattening pigs was observed.
Conclusion. It is concluded that the bacterium Lawsonia intracellularis is present in pig farms in the State of Yucatan with prevalences ≥ 25%.

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