Table 3:

Regression results (GLM) between the milk quality parameters of 3874 samples compared with BoHV-1-positive and BoHV-1-negative antibodies status. Values are means±se (n=1331 samples from 462 cows always positive and n=2819 samples from 916 cows always negative)

Milk quality parametersPositive samplesNegative samplesP value
Fat *3.90±0.0733.71±0.0300.045
Protein*3.39±0.0253.32±0.0140.2
Lactose*4.68±0.0254.82±0.010<0.0001
ESM*8.81±0.0458.87±0.0190.3
Log(som cells)†2.26±0.0591.95±0.025<0.0001
Urea‡98.18±3.8690.37±1.580.1
  • *%.

  • †Somatic cell count (x1000/ml).

  • ‡ mg/L.

  • ESM, dry non-fat-milk-material content; GLM, generalized linear model.