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Table 2 Example of estimated herd characteristics presented on the herd periodical each month when somatic cell count is analysed.

From: Norwegian mastitis control programme

Health status in the herd Herd Country
Number of cell count recordings during the period. 8 6
Prevalence of SCC > 200,000 cells/ml (%). 24 19
New inflammation >200,000 cells/ml (%) (corrected to 6 analyses). 72 (65) 53
Duration estimated in months (corrected to 6 samples). 4.3 (4.8) 4.7
Mastitis - number of cases per cow-year. 0.05 0.27
Ketosis - number of treatments per cow-year. 0.00 0.06
Milk fever - number of treatments per calving after 1st parity. 0.13 0.08
Reproduction treatments -number of treatments per cow-year. 0.09 0.11
Standardised reproduction number (FS) (country = county). 82 64
Calves < 6 months - number of treatments per half-year. 0.10 0.02