Table 6.

Effect of eggshell temperature (EST) during late incubation [≥embryonic days 17–19.5; 37.8°C (control) or 36.7°C (lower)] and/or feeding strategy after hatch [immediate access to feed and water (early) or 51–54 h deprivation (delayed)] on average footpad dermatitis (FPD) incidence of broilers at d 0, 6, 7, or 14 post Eimeria inoculation (d 21 post hatch) to induce necrotic enteritis (mean ± SE).

	N a	FPD (%) b
		Day post Eimeria inoculationc
		0	6	7	14
EST
Control	16	14.9 ± 4.35	19.7 ± 4.57	26.3 ± 5.05	36.3 ± 5.33
Lower	16	0.0 ± 0.00	10.4 ± 3.48	10.8 ± 3.61	21.0 ± 4.52
Feeding strategy
Early	16	2.3 ± 2.30	13.0 ± 3.83	11.7 ± 3.66	21.0 ± 4.52
Delayed	16	16.1 ± 4.91	17.1 ± 4.32	26.0 ± 5.14	36.3 ± 5.33
EST × Feeding strategy
Control × Early	8	2.8 ± 2.74	18.4 ± 6.29	18.4 ± 6.29	30.0 ± 7.25
Control × Delayed	8	29.0 ± 8.15	21.1 ± 6.61	34.2 ± 7.70	42.5 ± 7.75
Lower × Early	8	0.0 ± 0.00	7.7 ± 4.27	5.1 ± 3.53	12.2 ± 5.11
Lower × Delayed	8	0.0 ± 0.00	13.2 ± 5.48	17.1 ± 6.37	30.0 ± 7.25
P -values
EST		0.98	0.31	0.09	0.13
Feeding strategy		0.99	0.65	0.14	0.17
EST × Feeding strategy		0.99	0.68	0.73	0.56
Sex		0.20	0.42	0.68	0.50
Body weight		0.48	0.82	0.32	0.11
Sex × Feeding strategy		n.a.	0.04	n.a.	n.a.

^aNumber of pens.

^bBroilers with a score of 1 or 2 were classified as FPD positive.

^cIn total 99, 153, 150, and 161 broilers for d 0, 6, 7, and 14, respectively.