. 2021 Apr 5;5(3):txab060. doi: 10.1093/tas/txab060

Table 3.

Least-squares means for the interaction between Intervention Treatment and Birth Weight Category (BWC) on the rectal temperature of piglets over the first 24 h after birth

		Intervention Treatment (IT)¹				P-value
		Control	Warming	Drying+ Warming	SEM	BWC × IT interaction
Number of litters		15	15	15	—	—
Piglet rectal temperature, °C
Time after birth, min
0	BWC²				0.040	0.31
	Light	38.90	39.01	38.73	—	—
	Medium	39.14	39.21	39.05	—	—
	Heavy	39.16	39.10	39.06	—	—
10	BWC²				0.040	<0.0001
	Light	36.24^g	36.94^f	37.23^ef	—	—
	Medium	37.38^e	37.90^cd	37.99^bc	—	—
	Heavy	37.67^d	38.22^ab	38.37^a	—	—
20	BWC²				0.040	<0.0001
	Light	35.21^f	36.65^e	37.32^cde	—	—
	Medium	36.73^e	37.61^c	38.04^b	—	—
	Heavy	37.32^d	38.07^ab	38.39^a	—	—
30	BWC²				0.040	<0.0001
	Light	34.94^f	36.78^de	37.52^cd	—	—
	Medium	36.65^e	37.82^c	38.26^ab	—	—
	Heavy	37.32^d	38.08^bc	38.49^a	—	—
45	BWC²				0.040	<0.0001
	Light	34.62^f	36.69^de	37.64^cd	—	—
	Medium	36.76^e	37.81^c	38.39^ab	—	—
	Heavy	37.63^c	38.05^bc	38.63^a	—	—
60	BWC²				0.040	<0.0001
	Light	34.79^e	36.73^d	37.54^cd	—	—
	Medium	37.18^d	38.00^c	38.58^ab	—	—
	Heavy	38.04^c	38.25^bc	38.80^a	—	—
120	BWC²				0.041	<0.0001
	Light	35.74^e	37.50^d	38.05^bcd	—	—
	Medium	38.11^cd	38.36^abc	38.80^ab	—	—
	Heavy	38.62^ab	38.61^ab	38.84^a	—	—
1,440	BWC²				0.045	0.01
	Light	38.40^bc	38.48^c	38.68^abc	—	—
	Medium	38.78^c	39.14^ab	38.83^abc	—	—
	Heavy	38.84^abc	39.11^a	38.89^abc	—	—

¹Control = no treatment; Warming = placed in a plastic box under a heat lamp for 30 min; Drying+Warming = dried with desiccant, placed in a plastic box under a heat lamp for 30 min.

²Light = <1.0 kg; Medium = 1.0 to 1.5 kg; Heavy = >1.5 kg.

^{a,b,c,d,e,f,g}For each time after birth, means within the Intervention Treatment × Birth Weight Category interaction with differing superscripts differ (P ≤ 0.05).