SciELO - Scientific Electronic Library Online

 
vol.48 número2Identificación inmunoserológica de agentes infecciosos con influencia sobre la transferencia de embriones en el norte de BrasilEfecto del reemplazo de pasta soya por harina de pescado elaborada manualmente sobre comportamiento productivo de ovejas Pelibuey lactando y sus crías índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Archivos de medicina veterinaria

versão impressa ISSN 0301-732X

Resumo

RICHARDET, M et al. Magnitude and variation of clinical mastitis and its associated costs in dairy herds of Argentina. Arch. med. vet. [online]. 2016, vol.48, n.2, pp.153-158. ISSN 0301-732X.  http://dx.doi.org/10.4067/S0301-732X2016000200004.

A survey was conducted to evaluate the magnitude and variation of clinical mastitis among dairy herds. Prevalence, cumulative incidence and incidence rate were estimated, exploring risk factors at cow level and economic consequences. A cross sectional convenience sample of 2,535 Holstein-Friesian milking cows from 19 herds was the study population. Herd prevalence was estimated the day of the visit. Cows that showed no clinical signs were followed during 15 days to get incidence estimates. Mixed logistic models and survival analysis were applied. Using prevalence data, each case was monetized considering milk discharged, treatment costs and estimated milk losses until dry-off. Overall gross prevalence was 2.5 cases/100 cows (95% CI = 1.9-3.1), cumulative incidence was 3.9 new cases/100 milking cows (95% CI = 3.1-4.7) and incidence rate was 2.7 new cases/1.000 cow-days (95% CI = 2.2-3.3). The herds medians were 1.69 (q1 = 0, q3 = 4.2), 3.6 (q1 = 2.0, q3 = 4.6) and 0.25 (q1 = 0.14, q3 = 0.42), respectively. Cows during early lactation showed higher odds of being a prevalent case (OR = 1.69; 95% CI = 1.01-2.85). In cows, cumulative incidence (OR = 3.36; 95% CI = 1.84-6.11) and incidence rate (HR = 3.83; 95% CI = 2.05-7.15) were three times higher compared with heifers, after the adjustment for days in milk and herd. Average cost for case was US$ 185.01 and US$ 143.03 in cows and heifers, respectively, and the average losses reached up to US$ 4.50/milking cow (95% CI = 3.38-5.61). This is the first study documenting the clinical mastitis frequency and losses in dairy herds of Argentina.

Palavras-chave : clinical mastitis; prevalence; incidence; economic losses.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons