Table 6.

Day variances, CV, and proportion of total variation apportioned to day (H_Day) for the various anatomical and temperature parameters (Temp. Parameter) separated into four age ranges in Exp. 3

Age range	Anatomical region	Descriptive parameter	Mean temperature, °C	s.d.	Day variance, °C2	s.e.	CV	Hday, %
d5–14	Core body		38.92	0.39	0.005	0.004	0.002	3.31
	Eye	Maximum	38.57	0.86	0.003	0.006	0.001	0.34
		Average	34.76	1.29	0.033	0.032	0.005	1.92
	Rectal area	Maximum	39.28	1.15	0.021	0.018	0.004	1.41
		Average	34.75	1.99	0.000	0.000	0.000	0.00
d14–28	Core body		38.96	0.36	0.001	0.001	0.001	0.86
	Eye	Maximum	38.55	0.92	0.000	0.000	0.000	0.00
		Average	34.86	1.26	0.017	0.014	0.004	1.03
	Rectal area	Maximum	39.59	1.08	0.008	0.008	0.002	0.60
		Average	35.15	1.74	0.035	0.028	0.005	1.10
d28–56	Core body		38.99	0.46	0.006	0.003	0.002	2.90
	Eye	Maximum	38.74	0.80	0.001	0.003	0.001	0.14
		Average	35.32	1.14	0.000	0.000	0.000	0.00
	Rectal area	Maximum	39.91	1.00	0.004	0.005	0.002	0.37
		Average	35.72	1.59	0.000	0.000	0.000	0.00
d56–77	Core body		38.85	0.35	0.000	0.000	0.000	0.00
	Eye	Maximum	39.05	0.75	0.032	0.014	0.005	5.47
		Average	35.94	1.18	0.056	0.026	0.007	4.06
	Rectal area	Maximum	39.99	0.86	0.008	0.007	0.002	1.02
		Average	36.57	1.60	0.066	0.033	0.007	2.58

Values derived from the core body temperature (as measured by rectal thermometer) and infrared images of the right eye and rectal area as captured by a single operator over five consecutive days for each of 205 calves.