By Oresnik, A. and Trenti, F., ,
Description
Data collected from 1153 lactations in Friesian dairy cows was used to study the frequency of different diseases and reproductive disorders on 5 large dairy farms in Slovenia. The relationships between disease, reproductive disorders, milk yield and fertility were also examined. The average milk yield during the study period was 5631 1775 kg milk per cow. Mastitis was diagnosed in 42.1%, lameness in 15.1%, metritis in 23.9% and retained placenta in 16.1% of the cows in each lactation. These 4 disorders accounted for 86.7% of all the pathological findings in the herds. Farm, lactation number and diseases had a significant effect on milk yield. Ketosis and parturient paresis were associated with higher milk yield and mastitis, retained placenta and abortion with a lower milk yield. The cows fertility was negatively influenced by different diseases especially reproductive pathological disorders
Data collected from 1153 lactations in Friesian dairy cows was used to study the frequency of different diseases and reproductive disorders on 5 large dairy farms in Slovenia. The relationships between disease, reproductive disorders, milk yield and fertility were also examined. The average milk yield during the study period was 5631 1775 kg milk per cow. Mastitis was diagnosed in 42.1%, lameness in 15.1%, metritis in 23.9% and retained placenta in 16.1% of the cows in each lactation. These 4 disorders accounted for 86.7% of all the pathological findings in the herds. Farm, lactation number and diseases had a significant effect on milk yield. Ketosis and parturient paresis were associated with higher milk yield and mastitis, retained placenta and abortion with a lower milk yield. The cows fertility was negatively influenced by different diseases especially reproductive pathological disorders
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