. 2020 Aug 11;7:432. doi: 10.3389/fvets.2020.00432

Table 2.

Overall mean (±standard deviation) and least-squares means (±standard error) of MY, milk yield per milking; BIMO, bimodality of milk ejection; PFR, peak flow rate; AFR, average milk flow rate; SCS, Somatic Cell Score; LT, lag time; MET, milk ejection time; PPT, time of plateau phase; DPT, time of decline phase; BT, time of blind phase; T400, time to get the milk flow from 0.40 to 0.20 kg/min; TMT, total milking time; in recorded curve types.

MILK FLOW CURVE TYPES
Parameter	1	2	3	4	5	6	7	8	Overall mean
MY, kg	2.21 ± 0.12^f	3.53 ± 0.10^d^, ^e	3.29 ± 0.05^e	3.80 ± 0.13^c^, ^d	4.24 ± 0.11^b^, ^c	5.22 ± 0.09^a	4.38 ± 0.17^b	4.43 ± 0.13^b	3.95 ± 1.86
BIMO, %	4.95 ± 2.17^b	10.61 ± 1.69^b	9.92 ± 1.20^b	27.65 ± 3.04^a	12.40 ± 2.12^b	10.07 ± 1.49^b	17.27 ± 3.22^b	12.78 ± 2.23^b	12.50 ± 33.70
PFR, kg/min	0.50 ± 0.04^f	1.10 ± 0.03^d	1.29 ± 0.02^c^, ^e	1.73 ± 0.05^a	1.26 ± 0.03^c^, ^e	1.47 ± 0.03^b	1.15 ± 0.04^d^, ^e	1.18 ± 0.04^d^, ^e	1.28 ± 0.57
AFR, kg/min	0.36 ± 0.03^e	0.63 ± 0.01^d	0.85 ± 0.01^b	0.96 ± 0.03^a	0.94 ± 0.02^a	0.98 ± 0.02^a	0.68 ± 0.02^c^, ^d	0.74 ± 0.02^c	0.82 ± 0.35
SCS, units	4.12 ± 0.18^a	3.65 ± 0.10^a^, ^b^, ^c	3.79 ± 0.07^a^, ^b	3.72 ± 0.10^a^, ^b	3.46 ± 0.10^b^, ^c	3.27 ± 0.08^c	3.63 ± 0.15^a^, ^b^, ^c	3.70 ± 0.11^a^, ^b	3.63 ± 1.67
LT, min	4.09 ± 0.42^a	2.13 ± 0.12^c	2.08 ± 0.09^c	2.34 ± 0.18^b^, ^c	1.95 ± 0.13^c^, ^d	1.58 ± 0.07^d	2.31 ± 0.17^b^, ^c	2.84 ± 0.15^b	2.19 ± 2.34
MET, min	3.00 ± 0.36^d	4.94 ± 0.15^b	3.35 ± 0.06^d	3.50 ± 0.12^c^, ^d	4.05 ± 0.10^c	5.12 ± 0.10^a^, ^b	5.73 ± 0.24^a	5.24 ± 0.18^a^, ^b	4.30 ± 2.33
PPT, min	1.24 ± 0.19^c	1.42 ± 0.06^c	1.41 ± 0.03^c	0.45 ± 0.03^d	3.03 ± 0.09^a	2.43 ± 0.07^b	2.31 ± 0.17^b	2.40 ± 0.11^b	1.82 ± 1.50
DPT, min	1.45 ± 0.26^d	3.27 ± 0.14^a	1.65 ± 0.04^d	2.52 ± 0.11^c^, ^b	0.69 ± 0.03^e	2.37 ± 0.07^c	2.97 ± 0.21^a^, ^b	2.34 ± 0.15^c	2.13 ± 1.90
BT, min	1.91 ± 0.26^c	3.50 ± 0.17^c^, ^e	4.41 ± 0.13^a	4.26 ± 0.23^a^, ^b^, ^c	4.16 ± 0.22^a^, ^b^, ^c^, ^d	3.48 ± 0.14^c^, ^e	2.87 ± 0.24^e^, ^f	3.27 ± 0.22^d^, ^e	3.76 ± 3.19
T400, min	0.60 ± 0.13^a^, ^b	0.87 ± 0.07^a	0.48 ± 0.02^b	0.45 ± 0.03^b^, ^c	0.26 ± 0.02^c	0.53 ± 0.04^b	0.59 ± 0.07^b	0.54 ± 0.05^b	0.54 ± 0.79
TMT, min	11.89 ± 0.43^a^, ^b	11.65 ± 0.19^a^, ^b	10.88 ± 0.15^b	11.28 ± 0.27^a^, ^b	11.03 ± 0.25^b	11.02 ± 0.16^b	11.78 ± 0.28^a^, ^b	12.17 ± 0.25^a	11.29 ± 3.68

The fixed effect of milk flow curve type was significant at p < 0.001 for all traits.

^a−f

Least squares means in a row without a common superscript letter differ (p < 0.05).