Analysis2
Treatments1 CP TN SN NPN CN TP SP Casein Casein/TP
<300 3.16 ± 0.62a 0.49 ± 0.09a 0.09 ± 0.1a 0.023 ± 0.01a 0.39 ± 0.09a 3.13 ± 0.62a 0.63 ± 0.06a 2.49 ± 0.57a 0.26 ± 0.08a
300-750 3.16 ± 0.43a 0.49 ± 0.06a 0.10 ± 0.01b  0.026 ± 0.01b 0.38 ± 0.07a 3.13 ± 0.39a 0.69 ± 0.09b 2.42 ± 0.44a 0.25 ± 0.04a
750-1000 3.18 ± 0.14a 0.50 ± 0.02a 0.11 ± 0.05c  0.028 ± 0.01c 0.37 ± 0.07b 3.15 ± 0.15a 0.76 ± 0.03c 2.36 ± 0.44b 0.24 ± 0.01a
>1000 3.10 ± 0.44a 0.48  ± 0.04a 0.12 ± 0.04c  0.029 ± 0.01d 0.36 ± 0.06b 3.07 ± 0.30a 0.74 ± 0.02c 2.29 ± 0.38b 0.25 ± 0.02a
a-dMeans within a column with different superscripts differ (P<0.05)
Values are given as means ± standard deviation
1Treatments: <300=Tank milk with somatic cell count of <300000 cells/ mL; 300-750=Tank milk with somatic cell count of 300000 to 750000 cells/mL; 750-1000=Tank milk with somatic cell count of 750000 to 1000000 cells/ mL; >1000=Tank milk with somatic cell count of >1000000 cells/mL
2Analysis: CP=Crude protein (%); TN=Total nitrogen (%); SN=Soluble nitrogen (%); NPN=Non-protein nitrogen (%); CN=Casein nitrogen (%); TP=True protein (%); SP=Soluble protein (%)
Table 2: Nitrogen components of tank milk with different somatic cell counts.