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

	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