[Prevalence of Mammomonogamus laryngeus(Strongylida:Syngamidae) nematodes in a bovine slaughterhouse].
BACKGROUND
Mammomonogamus laryngeus is a nematode parasite that is usually found in the larynx of mammals in the tropics, especially in cattle, sheep and cats.


OBJECTIVE
The prevalence of M. laryngeus was determined in cattle brought to an abattoir as an indicator of its prevalence in the general population. Materials and methods. The present study was undertaken in the municipality of La Tebaida, Quindio, Colombia, to determine the presence of M. laryngeus infection in cattle brought to a local abattoir between December and February 2009. The tracheae and lungs of 500 slaughtered cattle were examined.


RESULTS
Parasite prevalence was 14.8% (n=74). The majority of worms were located on aryteno-epiglottic folds, but never in the tracheae or bronchi. The infection rate was highest (47%) in 2 to 2.5 year old animals. In infected animals, an average of 6.4 parasite pairs was found, with higher numbers in older animals. The prevalence of infection in cattle was greater than seen in the provinces of Valle del Cauca (10.0%), Quindío(3,0%) pr Caquetá (1.2%).


CONCLUSIONS
Reports of this parasite in cattle indicate its circulation throughout Colombia and recommend surveillance studies where cattle are raised and prepared for human consumption.
Programa de Biología, Facultad de Ciencias Básicas y Tecnológicas, Universidad del Quindío, Armenia, Colombia.
Diana Marcela
DM
Echeverry
Juan Miguel
JM
Rengifo
Jhon Carlos
JC
Castaño
Germán Alberto
GA
Téllez
María Mercedes
MM
González
D000003:Abattoirs / Q000706:statistics & numerical data*; D000818:Animals; D001980:Bronchi / Q000469:parasitology; D002417:Cattle / Q000469:parasitology*; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology; D003430:Cross-Sectional Studies; D005260:Female; D016266:Food Parasitology; D007818:Laryngeal Diseases / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D007830:Larynx / Q000469:parasitology; D008168:Lung / Q000469:parasitology; D008297:Male; D008460:Meat / Q000469:parasitology; D009928:Organ Specificity; D015995:Prevalence; D017206:Strongylida Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D014132:Trachea / Q000469:parasitology