THE EFFECT OF LAMENESS ON BODY CONDITION, MILK PRODUCTION AND SOMATIC CELL COUNT IN A HOLSTEIN-FRIESIAN FARM
Abstract
The aim of the present study was to determine the relationship between lameness and BCS and between lameness and SCC during the lactation. Detailed records were obtained from a south-east Hungarian dairy herd over two years’ period (10 times, 4491 data from 862 cows). The cows were classified as lame and not lame. There were four groups by BCS (BCS <2; BCS = 2,5-3; BCS >3,5; BCS > 4. The SCC counts were transformed by a logarithmic scale. The ANOVA method was used to investigate the relationship between lameness and BCS and SCC. During the lactation the decreased milk production was associated with an increased BCS but this tendency was better for non- lame cows (rnl=-0.40, rl=-0.35). In the first 100 days of lactation the milk production of lame cows was higher than that of the not lame cows. Later the not lame cows had higher milk production (rnl=-0.579, rl=-0.646). The SCC increased during the lactation but the count was higher in the milk of the lame cows.
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LUCRĂRI ȘTIINȚIFICE MANAGEMENT AGRICOL
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