Table 7.

Effect of coccidial vaccination or challenge on the veterinary necropsy results from day 6 to day 34¹.

Treatment	Vaccine	Challenge	Age	GAc	GTn	GMx	mMx
Main Effects
	−			0.81	0.08	0.28	0.28
	+			0.89	0.07	0.31	0.10
	P <			NS	NS	NS	0.01
		−		0.87	0.12	0.27	0.31
		+		0.83	0.03	0.32	0.08
		P <		NS	0.05	NS	0.001
			6	0.02	0.00	0.01	0.01
			8	0.23	0.02	0.02	0.02
			13	1.58	0.23	0.44	0.48
			20	1.96	0.19	0.93	0.02
			27	0.73	0.00	0.21	0.67
			34	0.60	0.00	0.17	0.02
			P <	0.001	0.01	0.001	0.001
			L <	0.05	0.05	0.05	NS
			Q <	0.001	0.01	0.001	0.001
SEM				0.279	0.105	0.178	0.153
Interaction terms
Vaccine × challenge				NS	NS	NS	NS
Vaccine × age				NS	NS	NS	0.01
Challenge × age				NS	NS	NS	0.001
Vaccine × challenge∗age				0.05	NS	NS	NS

Abbreviations: GAc, gross acervulina; GTn, gross tenella (score 0–4); GMx, gross micro max (score 0–4); mMx, micro max (score 0–4)

¹L: linear P value; Q: quadratic P value; NS: not statistically significant (P > 0.05).