. 2014 Jul;27(7):981–989. doi: 10.5713/ajas.2013.13449

Table 3.

Weight gain and feed conversion rate for the birds with and without Essential supplementation at pre-coccidial challenge (1 to 14 days) and weight gain and feed convertion rate for the birds with and without Essential supplementation after the coccidiosis challenge (Exp. 1)

Treatments		Pre-coccidial challenge

		Weight gain		Feed conversion rate
Control		234.73^a		1.389^a
Essential (1.5 kg/ton)		327.27^b		1.232^b
Essential (2.0 kg/ton)		329.68^b		1.235^b
SEM		8.55		0.035
p value		0.0001		0.0001

		After coccidiosis challenge

	Challenge	Weight gain (g)

		14 to 21 d	21 to 28 d	28 to 35 d	35 to 42 d

Essential (kg/ton)
0	+	203.2^a	457.0^a	866.3^a	1013.6
1.5	−	417.7^b	553.8^b	990.5^b	859.6
1.5	+	310.5^c	496.3^a	960.7^a	941.1
2	−	419.7^b	552.6^b	992.5^b	997.3
2	+	305.6^c	486.2^a	978.4^a	910.8
SEM		15.5	8.3	11.7	25.5
p value		0.0001	0.0001	0.0003	0.31

	Challenge	Feed conversion rate (g)

		14 to 21 d	21 to 28 d	28 to 35 d	35 to 42 d

Essential (kg/ton)
0	+	1.762^a	1.494	1.625^a	1.603^a
1.5	−	1.365^b	1.551	1.721^ab	1.908^b
1.5	+	1.611^c	1.640	1.736^b	1.724^ab
2	−	1.378^b	1.574	1.733^b	1.779^ab
2	+	1.605^c	1.685	1.751^b	1.830^ab
SEM		0.033	0.015	0.013	0.035
p value		0.0001	0.12	0.01	0.048

SEM, standard error of the mean.

Values are means of 10 replicate pens per treatment, with each pen having 50 birds at 1 d of age.

^abc

Means with a different superscript letter within a column are significantly different (p<0.05).