Genetic Improvement of Clinical Mastitis Resistance
Genetic correlations between the incidence of clinical mastitis, somatic cell score, longevity of cows and fertility represented by insemination interval and days open were estimated. Clinical mastitis in the whole lactation or in shorter parts of lactation, 30, 90 and 150 days of lactation were recorded. For clinical mastitis traits, breeding values were evaluated and genetic trends for bulls were calculated.
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