Table 4. Effects of dry period lengths (0-d and 60-d DP) on physiological responses, and EB of dairy cows pre- and postcalving

Item	0-d DP (n=7)	60-d DP (n=8)	SEM	p-value
				DP	Wk	DP × Wk
Precalving1)
DMI (kg/d)	17.55	14.98	0.09	< 0.001	0.033	< 0.001
BW (kg)	781.94	752.44	6.20	0.022	0.903	0.998
RT (°C)	38.71	38.59	0.03	0.014	< 0.001	0.325
RR (count/min)	53.91	44.47	0.78	< 0.001	< 0.001	0.803
SRT (°C)	32.72	31.43	0.22	0.003	0.507	0.708
SRU (°C)	30.38	30.19	0.17	0.572	0.580	0.044
EB (Mcal NEL/d)	-0.55	4.64	0.50	< 0.001	0.718	0.914
Postcalving2)
DMI (kg/d)	18.94	18.90	2.55	0.781	< 0.001	0.105
BW (kg)	658.58	629.15	5.50	0.010	< 0.001	0.885
RT (°C)	38.97	38.94	0.03	0.730	0.002	0.144
RR (count/min)	68.17	68.94	0.90	0.639	< 0.001	0.007
SRT (°C)	34.33	34.34	0.09	0.946	< 0.001	0.007
SRU (°C)	33.74	33.44	0.13	0.210	< 0.001	0.258
EB (Mcal NEL/d)	−3.87	−6.80	0.50	0.002	< 0.001	0.500

Precalving was defined as the last 8 weeks before the actual calving date.
Postcalving was defined as the first 10 weeks after the actual calving date.
DP, dry period; EB, energy balance; Wk, week related to calving; DMI, dry matter intake; BW, body weight; RT, rectal temperature; RR, respiratory rate; SRT, surface temperature of the rumen; SRU, surface temperature of the udder.