Table 4.

The main effect of parity on temperature measurements (°C) of the body surface of sows

Items	Parity Observations	1 to 2 d (n = 50)1)	3 to 4 d (n = 39)2)	5 to 6 d (n = 22)3)	≥7 d (n = 21)4)	SEM	p-value
Body surface
Vulva		34.74±0.042W,a	34.59±0.048W,ab	34.45±0.064W,b	34.45±0.069W,b	0.031	0.002
Udder		34.46±0.044X,a	34.51±0.049W,a	34.23±0.066WX,b	34.50±0.071W,a	0.033	0.017
Ear		34.09±0.052Y	34.14±0.059X	33.99±0.079Y	34.25±0.085WX	0.038	0.222
Back		34.04±0.041Y	34.11±0.047X	34.04±0.063XY	34.12±0.067X	0.031	0.644
SEM		0.022	0.025	0.034	0.035	-	-
p-value		<0.001	<0.001	<0.001	<0.001	-	-
Temperature difference between target sites
VU		0.28±0.042a	0.08±0.048b	0.25±0.064a	−0.16±0.068b	0.031	0.001
VE		0.65±0.044a	0.45±0.049b	0.49±0.066ab	0.23±0.071c	0.030	<0.001
VB		0.63±0.057a	0.42±0.064ab	0.40±0.086ab	0.32±0.092b	0.044	0.025

Value shown is the mean±standard deviation from day 1 to day 8 post-weaning.

SEM, standard error of the mean; VU, vulva - udder; VE, vulva - ear base; VB, vulva - central back.

¹⁾Sample size = 50 sows×4 measurements per day×8 days.

²⁾Sample size = 39 sows×4 measurements per day×8 days.

³⁾Sample size = 22 sows×4 measurements per day×8 days.

⁴⁾Sample size = 21 sows×4 measurements per day×8 days.

^a–cMeans within a row without a common superscript letter differ (p<0.05).

^W–YMeans within a column without a common superscript letter differ (p<0.05).