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. Author manuscript; available in PMC: 2019 Jan 29.
Published in final edited form as: J Dairy Sci. 2017 Jul 12;100(9):7246–7261. doi: 10.3168/jds.2017-12647

Table 6.

High abundance milk proteins from Holstein dairy cattle fed diets with either a high RDP:RUP ratio (RDP) or low RDP:RUP ratio (RUP)

Diet
 P-value
Item RDP RUP SED1 Treatment Period
Casein (mg/mL of skim milk)
  β-CN  16.3  15.8   0.29   0.06   0.03
  κ-CN   5.61   5.39   0.08   0.04   0.01
  Total α-CN  15.7  16.3   0.33   0.06   0.22
  αS1-CN  13.7  13.3   0.45   0.10   0.22
  αS2-CN   1.93   1.93   0.07   0.95   0.20
  Total casein  37.8  36.3   0.48  <0.01   0.04
Whey (mg/mL of skim milk)
  α-LA   1.48   1.50   0.09   0.66   0.26
  β-LGA2   2.52   2.50   0.19   0.91   0.10
  β-LGB3   1.60   1.64   0.11   0.72   0.52
  Total α-LA, β-LGA, β-LGB   5.50   5.75   0.37   0.36   0.52
1

SE = standard error of the difference.

2

β-LGA = β-lactoglobulin variant A.

3

β-LGB = β-lactoglobulin variant B.