Table 3.

Effect of a protected organic acids-essential oils blend with or without oat hulls on relative organ weights of broiler chickens (% BW, unless otherwise stated).

Item	Treatments1				SEM2	P-value
	BAS	BMD	OE	OEOH
Slaughter weight, kg	2.80	2.82	2.75	2.63	0.080	0.3559
Bursa	0.18	0.17	0.18	0.20	0.016	0.6352
Spleen	0.10	0.09	0.10	0.08	0.008	0.2431
Gizzard3	1.17b	1.17b	1.19b	1.67a	0.073	<0.0001
Ceca4	0.36	0.42	0.39	0.34	0.024	0.0765

^{a, b}In a row, means assigned different lowercase letters are significantly different, P < 0.05 (Tukey's procedure).

¹BAS, basal diet; BMD, antibiotic diet; OE, diet containing 300 g of protected organic acids-essential oils blend/1,000 kg of feed; OEOH, diet containing 300 g of protected organic acids-essential oils blend/1,000 kg of feed +3% coarse oat hulls.

²Standard error of means.

³Empty weight of gizzard.

⁴Empty weight of ceca.