Table 4.

Effects of coccidiosis vaccination on the apparent ileal digestibility (%) of nutrients and ileal digestible energy (kcal/kg) in broilers to 36 d post-hatch^1,2.

Item	NC	PC	VAC	SEM	P-value
12 d
Dry matter, %	70.4a	71.5a	66.9b	0.58	0.001
Nitrogen, %	81.7a	82.8a	77.6b	0.55	0.001
Ether extract, %	88.5a	89.3a	79.6b	1.72	0.001
Starch, %	90.7a	92.0a	88.9b	0.41	0.001
IDE, kcal/kg3	3,337a	3,399a	3,138b	26	0.001
16 d
Dry matter, %	74.9	73.3	74.0	0.52	0.086
Nitrogen, %	83.9	83.4	83.4	0.45	0.706
Ether extract, %	91.1a	91.0a	85.9b	1.38	0.017
Starch, %	91.0	89.7	89.7	0.76	0.380
IDE, kcal/kg3	3,587	3,542	3,543	24	0.317
20 d
Dry matter, %	71.1b	72.6a	73.2a	0.43	0.005
Nitrogen, %	79.6b	82.4a	81.7a	0.46	0.004
Ether extract, %	65.1b	85.9a	78.6a	3.53	0.001
Starch, %	90.4b	91.7a	91.3ab	0.34	0.028
IDE, kcal/kg3	3,326b	3,469a	3,447a	25	0.001
36 d
Dry matter, %	75.5a	75.6a	73.7b	0.41	0.005
Nitrogen, %	83.5	83.1	83.7	0.41	0.398
Ether extract, %	94.0	94.1	92.5	0.88	0.271
Starch, %	89.0b	90.9a	89.4ab	0.48	0.023
IDE, kcal/kg3	3,629	3,642	3,605	19	0.404

^a,bMeans within a row that do not share a common superscript are different (P < 0.05).

¹Values are LSMeans of 10 replicate pens.

²NC, negative control; PC, positive control, birds were given an in-feed anticoccidial drug; VAC, vaccinated, birds were given a commercial dose of vaccine on 0 d.

³IDE, ileal digestible energy.