Incidence and economics of clinical mastitis in five Holstein herds in the Czech Republic
|Kateg. publikace||Vědecké publikace impaktované|
Data on clinical mastitis (CM) collected between 1996 and 2003 on five Holstein dairy farms in the Czech Republic were analyzed. Lactational incidences of CM, averaged across farms and calculated only from cows with complete lactations, were 0.35, 0.45 and 0.57 for the 1st, 2nd and 3rd plus subsequent lactations, respectively. The mean numbers of CM cases per cow and lactation were 0.63, 0.94 and 1.22, and the incidence of CM cases per cow-year at risk were 0.68, 1.00 and 1.27 for the 1st, 2nd and 3rd plus subsequent lactations, resp. Longitudinal analysis of CM prevalence based on daily records showed the highest proportion of infected cows in the first ten days of lactation. The within-farm incidence of CM cases per cow per year, averaged over lactations, ranged from 0.53 to 1.56 with a mean value of 0.94 in the whole data set. Direct financial losses from CM per cow per year within farm ranged from 43.63 to 84.84 Eur The mean economic value of CM incidence was 62.6 Eur per CM case.
|Oddělení||Chov skotu, Genetika a šlechtění hospodářských zvířat|
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