| Popis: |
The incidence of foot disorders such as pododermatitis and dermatitis interdigitalis in the progeny of 10 AI sires was studied. Fifty heifers from each sire's progeny were inspected once between 60–100 days post partum. At that examination of the hooves, symptoms of pododermatitis (haemorrhages in the sole, and sole ulcers) and dermatitis interdigitalis (eczema of the interdigital skin, and bulbhorn erosion) were classified. The statistical analysis included sire, housing system, pododermatitis symptoms and dermatitis interdigitalis symptoms. It showed significant differences in the incidence and seriousness of pododermatitis between the progeny groups. These differences were partly influenced by the distribution of heifers over the housing systems and an interaction between housing system and sire. The incidence of dermatitis interdigitalis in the progeny groups was not influenced by the sire. |
