. 2020 Jun 17;99(8):3897–3907. doi: 10.1016/j.psj.2020.05.010

Table 3.

Effect of 2 eggshell temperatures (EST; 37.8°C, 38.9°C) applied during week 2 and 2 EST (36.7°C, 37.8°C) during week 3 of incubation on later life broiler body weight (g).

Item	n¹	Day 1	Day 7	Day 14	Day 21	Day 28	Day 35	Day 40
EST week 2
37.8°C	16	53^b	188	513	1,034	1,706	2,507	3,086
38.9°C	16	56^a	190	511	1,042	1,707	2,486	3,053
SEM		0.3	2	4	8	13	18	24
EST week 3
36.7°C	16	53^b	184^b	501^b	1,020^b	1,677^b	2,454^b	3,023^b
37.8°C	16	56^a	193^a	523^a	1,056^a	1,735^a	2,539^a	3,116^a
SEM		0.3	2	4	8	13	18	24
EST week 2 x EST week 3
37.8°C × 36.7°C	8	51	183	499	1,010	1,663	2,454	3,040
37.8°C × 37.8°C	8	56	192	527	1,057	1,748	2,560	3,132
38.9°C × 36.7°C	8	54	186	504	1,029	1,691	2,453	3,006
38.9°C × 37.8°C	8	57	194	518	1,054	1,722	2,518	3,100
SEM		0.4	2	5	12	18	25	35
P-value
week 2		<0.001	0.16	0.74	0.51	0.96	0.40	0.35
week 3		<0.001	<0.001	<0.001	0.006	0.005	0.003	0.02
week 2 × week 3		0.15	0.79	0.18	0.35	0.16	0.42	0.99

^a-bLeast squares means within a column and factor lacking a common superscript differ (P ≤ 0.05).

Number of pens, each containing 10 broilers, 50:50 sex ratio.