Table 3.

Performance of broiler chickens supplemented with individual inclusions or with blends of organic acids.

			Organic acids2
Variables1		Control	Benzoic	Butyric	Citric	Formic	Fumaric	Lactic	Blends	SE	Probability	Adjustments3
ADG, g	n	371	25	90	102	58	37	20	260
										0.62	0.066	A and A × A
	LS-Means	46.0	45.4	47.2	46.9	46.2	45.3	46.4	47.7
ADFI, g	n	365	25	82	102	58	37	20	256
										1.32	0.874	A and A × A
	LS-Means	84.3	83.5	83.9	84.5	83.9	80.9	83.4	85.0
FCR	n	367	25	82	102	58	37	20	256
										0.011	<0.001	A
	LS-Means	1.78 b4	1.78 ab	1.73 ab	1.75 ab	1.75 ab	1.75 ab	1.74 ab	1.72 a
VB, %	n	57		25					61
			–		–	–	–	–		0.49	0.375	A and A × A
	LS-Means	95.3		94.9					95.8
PF	n	54		23					60
			–		–	–	–	–		7.66	0.205	A and A × A
	LS-Means	274.0		285.4					301.4

¹FCR, feed conversion ratio; VB, viability; PF, production factor = (((ADG × VB)/FCR)/10).

²It was considered in the analysis the organic acids with n equal to or greater than 20.

³Adjustments: studies (experiments) entered in the model as a random-effect class variable, and the variables age (A, average between the initial and final age of each evaluation, expressed in d) and age × age entered in the model as fixed-effect covariates. In all adjustments, the fixed-effect covariates presented P < 0.001.

⁴LS-Means (least square means) followed by distinct letters differ by the Tukey-Kramer's test (P < 0.05).