Table 5.

Spearman and Pearson correlations for each shortened number of visits interval between 30 and 40 visits and the full 100 visits for CH₄, CO₂, O₂, and metabolic heat production (kcal/d)

Gas	Direction	Analysis	30 visits	32 visits	34 visits	36 visits	38 visits	40 visits	100 visits
CH 4 , g/d	Forward	Spearman	0.87	0.90	0.89	0.92	0.95	0.98	1
		Pearson	0.93	0.94	0.95	0.96	0.96	0.97	1
	Reverse	Spearman	0.89	0.90	0.94	0.97	0.96	0.96	1
		Pearson	0.96	0.97	0.97	0.98	0.98	0.98	1
CO 2 , g/d	Forward	Spearman	0.93	0.93	0.95	0.95	0.95	0.95	1
		Pearson	0.93	0.94	0.94	0.94	0.95	0.96	1
	Reverse	Spearman	0.88	0.89	0.89	0.90	0.91	0.93	1
		Pearson	0.94	0.94	0.94	0.94	0.94	0.95	1
O 2 , g/d	Forward	Spearman	0.94	0.93	0.95	0.94	0.97	0.97	1
		Pearson	0.94	0.94	0.94	0.95	0.96	0.96	1
	Reverse	Spearman	0.90	0.92	0.92	0.94	0.94	0.95	1
		Pearson	0.94	0.95	0.95	0.95	0.95	0.95	1
Metabolic heat production, kcal/d	Forward	Spearman	0.90	0.93	0.94	0.95	0.96	0.96	1
		Pearson	0.94	0.94	0.94	0.95	0.96	0.96	1
	Reverse	Spearman	0.91	0.93	0.93	0.94	0.94	0.94	1
		Pearson	0.94	0.94	0.94	0.95	0.95	0.95	1

Contribution number 23-148-J from the Kansas Agricultural Experiment Station.