Table 2 The effect of herd paratuberculosis sero-status (positive, negative or non-negative) on milk, fat and protein yield, somatic cell count score (SCCS) and calving interval [mean (95% CI)]
From: Paratuberculosis sero-status and milk production, SCC and calving interval in Irish dairy herds
Variables | Positive | Non-negative | Negative | F-value | Adjusted R2 | P-value |
|---|---|---|---|---|---|---|
Milk (kg) | 6981.44 (6594-7369) | 6928.00 (6594-7369) | 6601.85 (6408-6795) | 1.995 | 0.447 | 0.138 |
Fat (kg) | 242.20 (231-253) | 238.50 (226-251) | 238.03 (232-244) | 0.213 | 0.7 | 0.809 |
Protein (kg) | 222.09 (216-228) | 220.79 (214-228) | 215.75 (213-219) | 2.031 | 0.871 | 0.133 |
SCCS (score) | 3.26 (2.7-3.8) | 3.38 (2.7-4.0) | 2.76 (2.5-3.0) | 2.469 | 0.021 | 0.087 |
Calving interval (day) | 386.42 (368-405) | 391.63 (364-419) | 381.67 (372-391) | 0.696 | 0.063 | 0.5 |