Ruminal lesions in cattle slaughtered in slaughterhouses

The objective of the present study was to describe macroscopic and microscopic lesion in the rumen of bovine slaughtered in the Municipal Meat Processor of Colima, Mexico. The lesions found during the slaughter were macroscopically and subsequently fixed in 10% buffered formalin with pH 7.2 described. It was with the routine histological technique, and stained with hematoxylin-eosin (H-E) processed. 100 rumen were collected, as well as data on the origin, age, sex, and species of the animals. Data were, with the Chi-square independence test and logistic regression analysis analyzed. The 98% of the bovines presented at least one of the following lesions: hemorrhages, erosions, ulcers, scars, hyperkeratosis, hydropic degeneration, rumenitis, lymphangiectasia, a sample had a papilloma and the presence of the protozoan Balantidium coli was in 30% of the samples found. Dependence was found between B. coli to the origin (P= 0.046) and the sex (P= 0.041) of the animals. The variables that were significant (P= <0.05) in the logistic regression analysis were scars, rumenitis, lymphangiectasia, and B. coli. The injuries found to interfere with the absorption of nutrients, loss of production, and productivity, as well as the presence of opportunistic pathogens that can represent a health risk for animals and humans.