Table 2.

Effect of yeast treatment and environmental temperature on the water consumption and metabolism of finishing steers

Items1	TRT2		TEMP3		SEM	P value
	CON	ADY	TN	HS		TRT	TEMP	TRT × TEMP
Water intake, kg/d	12.1	15.0	13.4	13.8	2.40	0.2514	0.8692	0.6165
Water intake, % SBW	2.51	3.09	2.76	2.84	0.444	0.2719	0.8809	0.6479
Water intake:DMI	1.78	2.25	1.89	2.13	0.370	0.2062	0.5149	0.5698
DMI, kg/d	6.77	6.77	7.10a	6.43b	0.197	0.9786	0.0004	0.6615
DMI, % SBW	1.41	1.40	1.47a	1.34b	0.045	0.8568	0.0016	0.8740
Fecal DM, kg/d	1.67	1.55	1.75a	1.48b	0.120	0.0766	0.0005	0.7721
Fecal DM, % SBW	0.348	0.321	0.363a	0.306b	0.025	0.0730	0.0007	0.8793
DMD, %	75.3b	77.1a	75.3b	77.1a	1.90	0.0311	0.0305	0.9296
Urine, kg/d	12.5	13.0	10.7b	14.8a	2.12	0.8252	0.0495	0.6350
Urine, % SBW	2.61	2.69	2.23b	3.07a	0.448	0.8387	0.0438	0.7259
Feed N, kg/d	0.128	0.128	0.134a	0.122b	0.004	0.9786	0.0004	0.6615
Fecal N, kg/d	0.0037	0.0038	0.0039a	0.0036b	0.0001	0.4578	0.0172	0.1510
Fecal N, %	2.93	2.99	2.91	3.01	0.072	0.3456	0.1238	0.1788
Urinary N, kg/d	0.0694	0.0630	0.0656	0.0668	0.004	0.2539	0.8356	0.6555
Urinary N, %	0.700	0.613	0.731	0.581	0.117	0.2887	0.0772	0.7584
N retained, %	42.1	47.0	47.8	41.3	3.65	0.3032	0.1833	0.5119
CH4, L/d	79.2	73.9	69.7	83.4	9.00	0.5287	0.1109	0.3458
CH4, g/kg DM	7.72	7.28	6.47b	8.53a	0.938	0.5641	0.0145	0.3557

^a,bLeast squares means of the main effects in a row with different superscripts differ at P < 0.05.

¹Items are metabolism variables; SBW = shrunk body weight; N = nitrogen; DMD = dry matter digestibility.

²Treatment is control fed (CON) or control + 3 g/d of an active dried yeast (ADY).

³Temperature is thermoneutral [TN; 18 ± 0.55 °C; 20% relative humidity (RH)] or heat stressed (HS; 35 ± 0.55 °C; 42% RH).