Dictyocaulosis in dairy cows in Brazil: an epidemiological, clinical-pathological and therapeutic approach

An outbreak of severe parasitic pneumonia caused by Dictyocaulus viviparus was diagnosed in adult dairy cows in the municipality of Arabutã, Southern Brazil. The total morbidity in the herd was 71.9%, and the morbidity amongst adult lactating cattle was 100%. The main clinical signs observed were dy...

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Bibliographic Details
Published in:Acta parasitologica 2017-03, Vol.62 (1), p.129-132
Main Authors: Henker, Luan C., Schwertz, Claiton I., Lucca, Neuber J., Piva, Manoela M., Giacomin, Patricia, Gris, Anderson, Rhoden, Leandro A., Norbury, Luke J., da Silva, Aleksandro S., da Rosa, Rafael A., Mendes, Ricardo E.
Format: Article
Language:English
Subjects:
Animal lactation
Animal Systematics/Taxonomy/Biogeography
Animals
Anorexia
Antibodies, Helminth - blood
Apathy
Biomedical and Life Sciences
Biomedicine
Brazil - epidemiology
Cattle
Cattle Diseases - epidemiology
Cattle Diseases - mortality
Cattle Diseases - parasitology
Dairy cattle
Dictyocaulus - classification
Dictyocaulus Infections - epidemiology
Dictyocaulus Infections - mortality
Disease Outbreaks - veterinary
Dyspnea
Ecology
Epidemics
Female
high morbidity
lungworm
Medical Microbiology
Microbiology
Milk production
Morbidity
Parasites
Parasitology
Pneumonia
Pneumonia - epidemiology
Pneumonia - mortality
Pneumonia - parasitology
Pneumonia - veterinary
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Summary:An outbreak of severe parasitic pneumonia caused by Dictyocaulus viviparus was diagnosed in adult dairy cows in the municipality of Arabutã, Southern Brazil. The total morbidity in the herd was 71.9%, and the morbidity amongst adult lactating cattle was 100%. The main clinical signs observed were dyspnea, tachypnea, nasal discharge, decreased milk production, and cough. A necropsy was conducted on one animal in order to establish the diagnosis. The herd had been treated previously with levamisole; however, clinical signs persisted and became worse. After treatment with eprinomectin the severity of clinical signs decreased, and the respiratory condition subsequently disappeared. It is believed that the high morbidity presented in this outbreak is related to epidemiological factors, such as increased rainfall in 2014 and 2015, associated with low immunity of the herd. This is the first report of dictyocaulosis in adult dairy cattle in Brazil. Furthermore, it describes an outbreak presenting very high morbidity.
ISSN:1230-2821
1896-1851
DOI:10.1515/ap-2017-0015