Fecha/hora: 16/06/2024 08:19:33

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 31/01/2020
Fecha de la última actualización: | 31/01/2020
Autoria: | GIANNEECHINI, R.; CONCHA, C.; RIVERO, C.; DELUCCHI, M.I.; MORENO LÓPEZ, J.
Afiliación: | R. GIANNEECHINI, Department of Microbiology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Sweden; Laboratory Veterinary Direction Miguel C. Rubino, Paysandú, Uruguay; C. CONCHA, Department of Mastitis and Diagnostical Products, National Veterinary Institute, Uppsala, Sweden; C. RIVERO, Laboratory Veterinary Direction Miguel C. Rubino, Paysandú, Uruguay; MARIA INES DELUCCHI ZAPARRART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; J. MORENO LÓPEZ, Department of Microbiology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Sweden; Department of Microbiology, BMC (Biomedical Centre), Swedish University of Agricultural Sciences, Uppsala, Sweden.
Título: | Occurrence of clinical and sub-clinical mastitis in dairy herds in the west littoral region in Uruguay.
Año de publicación: | 2002
Fuente/Imprenta: | Acta Veterinaria Scandinavica, 2002, Volume 43, Issue 4, Article number A221, Pages 221-230. OPEN ACCESS
ISSN: | 0044-605X
DOI: | 10.1186/1751-0147-43-221
Idioma: | Inglés
Notas: | Article history: Received September 5, 2001 / accepted August 12, 2002.

Contenido:

ABSTRACT.
Twenty-nine dairy farms were selected to determine the incidence of clinical mastitis, prevalence of sub-clinical mastitis and bacterial aetiology in the West Littoral Region of Uruguay. In samples taken by the owner and frozen at -20°C during a week the incidence rate of clinical mastitis was determined as 1.2 cases per 100 cow-months at risk. Staphylococcus aureus was the most common isolated pathogen in 37.5% of 40 milk samples from clinical cases obtained in 1 month. No bacteria grew in the 32.5% of the total samples. A sub-sample including 1077 dairy cows from randomly selected farms was used to determine the prevalence of sub-clinical mastitis. These samples were taken on one visit to each farm. The prevalence was 52.4% on a cow basis and 26.7% on an udder quarter basis. In 55.1% of the quarters of the selected animals with more than 300 000 cells/ml there was no growth. The isolated pathogens from sub-clinical cases and their relative frequencies were: Staphylococcus aureus 62.8%, Streptococcus agalactiae 11.3%, Enterococcus sp, 8%, coagulase-negative staphylococci 7.4%, Streptococus uberis 6.4%, Streptococcus dysgalactiae 1.8%, Escherichia coli 1.5% and Staphylococcus hyicus coagulase-positive 0.6%.

Palabras-Clave: | Cows; Incidence; Prevalence.
Thesagro: | MASTITIS; URUGUAY; VACAS.
Categoría del tema: | L73 Enfermedades de los animales
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/14108/1/1751-0147-43-221.pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (102144-1) - PXI - AP - DD - PP/ACTA VERTERINARIA SCANDINAVICA/2002 -  -  - DIS