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Table 1 Descriptive statistics for the database used for developing equations in this study

From: Meta-analysis of factors affecting milk component yields in dairy cattle

  N Mean S.D. Median Max Min
Animal inputs       
BW, kg 442 638.21 53.41 641.00 778.00 443.00
DIM, day 358 115.23 56.12 116.50 277.00 1.00
DMI, kg/d 442 22.53 3.51 22.95 32.80 7.00
DMI,% BW 442 3.53 0.50 3.60 5.04 1.26
Forage DMI, kg 442 11.40 2.49 11.40 19.90 3.47
Forage,%DM 442 51.06 10.66 50.00 100.00 19.70
Nutrient composition
DM,% AF 303 54.90 9.58 53.90 88.40 27.73
CP,% DM 441 17.35 1.89 17.30 25.98 7.10
EE,% DM 203 4.35 1.30 4.35 8.40 1.50
Ash,% DM 189 7.80 2.08 7.50 18.40 3.42
NFC,% DM 183 38.52 5.72 39.30 51.40 24.60
NDF,% DM 438 33.19 4.81 32.70 51.80 19.50
ADF,% DM 340 20.73 3.89 20.20 37.40 11.20
RDP,% DM 116 10.64 1.17 10.60 13.17 6.89
RUP,% DM 103 7.36 5.20 6.30 33.70 4.40
Starch,% DM 174 23.82 5.77 23.30 39.20 9.50
NEL, Mcal/kg 249 1.62 0.08 1.61 1.80 1.40
Milk yield and composition
Milk yield, kg/d 442 34.53 6.76 35.55 50.90 15.70
3.5% FCM, kg 442 34.68 6.74 35.45 52.11 16.18
4.0% FCM, kg 442 32.08 6.23 32.79 48.20 14.97
Fat,% 442 3.57 0.51 3.53 5.93 2.16
Fat yield, kg 442 1.22 0.26 1.24 1.96 0.55
Protein,% 442 3.14 0.37 3.09 6.87 2.53
Protein yield, kg 442 1.06 0.22 1.09 1.73 0.47
MUN, mg/dl 242 13.63 4.34 13.01 35.80 6.77