Epidemiological and genetical studies in Norwegian pig herds. II. Overall disease incidence and seasonal variation |
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| Authors: | Frode Lingaas Knut Rnningen |
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| Institution: | Department of Animal Genetics, Norwegian College of Veterinary Medicine, Oslo. |
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| Abstract: | The present epidemiological study is based on individual health records from 1984 to 1986 in 70 pig herds in the south-eastern part of Norway. For most of the recorded diseases, the incidence rate was less than 1% per farrowing. The majority of disease recordings concerned 6 frequently-occurring conditions; the MMA-syndrome, mastitis, metritis, neonatal diarhoea, arthritis and scrotal hernia. A seasonal effect on the incidence rate was shown for several diseases. The incidence rate for the MMA-syndrome of about 17.5% seems to be of the highest recorded for this disease in a population study. |
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| Keywords: | MMA-syndrome mastitis metritis neonatal diarrhoea arthritis scrotal hernia seasonal effect age effect swine disease recordings |
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