Clinical and histopathological diagnosis of bovine paratuberculosis in a dairy herd in Colombia
Journal Title: Revista MVZ Cordoba - Year 2011, Vol 16, Issue 3
Abstract
Objective. To analyze retrospectively and systematicaly the histological and clinical findings of bovine paratuberculosis Mycobacterium avium subsp. Paratuberculosis (MAP). The data were obtained at different times over a period of 8 years (2000-2008) in a dairy herd in Colombia. Materials and methods. Historical data of clinical and histopathological findings, in five cases compatible with bovine paratuberculosis, were studied. Additional information was also analysed from other studies related to the disease in the herd in the same period of time. Results. The infected animals showed intermittent chronic diarrhea, decreased production of milk, progressive weight loss, normal appetite, increased water consumption and normal physiological constants. The necropsy revealed variable thickening of the intestinal mucous membrane in the ileum and proximal portion of the large intestine with multiple uprisings and depressions, which did not disappear in the stretched tissue. Mesenteric vessels were dilated and congestive. Mesenteric lymph nodes were found increased up to three times, without clear delineation of bark and cord. Histological alterations were enteritis and lymphomatoid granulomatosis. Three animals showed abundant acid alcohol resistant Bacilli (AARB) in macrophages, giant cells and in the interstitial tissue by using the Ziehl-Neelsen staining. However, it was not found the granulomatous inflammation in other tissues evaluated. Conclusion. Diagnostic based on clinical, histopathological and necropsy findings as well as on analysis of diagnostic information from other studies, allow us to confirm the presence, circulation and permanence of MAP in the herd with an apparent high number of infected animals.
Authors and Affiliations
Nicolás Ramírez V, Ph. D(c) *| Universidad de Antioquia, Facultad de Ciencias Agrarias, Escuela de Medicina Veterinaria, Grupo Centauro, Medellín, Colombia.Correspondencia: nicoramirez2010@gmail.com., Berardo Rodríguez, Ph. D| Universidad de Antioquia, Facultad de Ciencias Agrarias, Escuela de Medicina Veterinaria, Grupo Centauro, Medellín, Colombia., Jorge Fernández S, Ph. D(c)| Universidad de Antioquia, Facultad de Ciencias Agrarias, Escuela de Medicina Veterinaria, Grupo Centauro, Medellín, Colombia.
Keywords
Related Articles
- EP ID EP3224
- DOI -
- Views 363
- Downloads 19
Conservation and chemical composition of Leucaena Leucocephala plus fresh or wilted Pennisetum purpureum mixed silages
Objective. Quantify the effects of mixing Leucaena (L) with King grass forage, fresh (K) or wilted (Kp), on the fermentation process and chemical composition of mixed silages. Materials and methods. Silos were produced m...
Factor affecting the useful life of dual-purpose cows
Objective. Determine the effect of non-genetic factors and breed group, on the useful life (UL) of dual-purpose cows. Materials and methods. Records from 2098 cows were used in the analysis which included all the females...
Pulmonary adenocarcinoma in cattle
The Macroscopic, histological and immunohistochemical aspects of lung acinar adenocarcinoma and the presence of nodules in the abdominal cavity of an adult female bovine are reported. In the necropsy analysis samples wer...
Aglepristone efficiency with and without the canine pyometra cloprostenol
Objective. Evaluate the effectiveness of aglepristone with and without cloprostenol for treating canine pyometra. Materials and methods. Ten female French Bulldogs between 3-8 years of age diagnosed with pyometra were di...
ZOOPLANKTON IN LARVICULTURE OF NEOTROPICAL FISHES
Because of the poor development of digestive system and swimming capability of young fish, larviculture of altricial neotropical fish presents for the management of the initial feeding. The feeding of the larvae must con...