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Digitálna dermatitída a jej dopad na produkčné a ekonomické ukazatele
Bončová, Barbora
Hoof health problems are a concern in all dairy farms worldwide, impacting the well-being of cows and productivity, which directly affects the farm’s economy. One of the most widespread diseases is digital dermatitis (DD). The subject of this work was to evaluate the incidence of digital dermatitis based on parity and lactation phase on dairy farm with approximately 700 Holstein cows. An experiment was conducted to determine the correlation between disease presence and milk yield. ANOVA with repeated measures was used as statistical analysis, with the dependant variable being average daily milk yield. Dairy cows were divided into four groups based on parity and lactation phase. Furthermore, the course of lactation was examined during the period of nine weeks with hooves treated in fifth week. The cost of digital dermatitis was calculated per sick cow and for the entire farm using multiple models for comparison. Results showed that primiparous cows had the highest incidence of the disease, and numbers decreased with increasing parity. The incidence of digital dermatitis was approximately 12% in the observed group. A statistical dependence was confirmed in only one group, specifically in dairy cows during the second and third lactation in the second phase. After treatment, a few weeks of reduced milk production were noted, while cows with DD had higher milk yield during the study period. This suggests that high-productive cows have a higher predisposition to DD. The calculated costs per cow ranged from 1,488.66 to 2,234.51 CZK across different models, with total costs for the company ranging from 113,784.67 to 193,545.32 CZK per year.
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