Table 5. Effect of feed form and enzyme supplementation on the morphology of tibia bone of broilers

Feed form	Enzyme	WT (g)	L (mm)	D (mm)	Strength (N)
Mash	No enzyme	5.7^d	86.6^c	14.5^c	199.4^c
	AXB	6.4^cd	88.2^bc	15.5^abc	213.5^bc
	QB	7.5^ab	88.5^abc	15.1^bc	240.1^abc
	AXB + QB	7.5^ab	88.3^bc	15.0^bc	218.6^bc
Pellet	No enzyme	7.1^bc	89.5^abc	15.4^abc	225.5^bc
	AXB	7.3^abc	89.2^abc	15.5^abc	234.7^abc
	QB	7.8^ab	91.3^ab	15.9^ab	250.7^ab
	AXB + QB	8.3^a	91.7^a	16.3^a	274.8^a
SEM		0.14	0.33	0.10	4.67
Significance
Feed form		0.001	0.001	0.001	0.001
Enzyme		0.001	0.022	0.038	0.004
Feed form × Enzyme		0.158	0.368	0.063	0.168

Means with different superscripts within the columns are significantly different (p < 0.05).
Values are means of 6 replicates (10 birds per replicate).
AXB, axtra XB (xylanase and beta-glucanase composite); QB, quantum blue (phytase); SEM, standard error of the mean; WT= bone weight; L= bone length; D, bone diameter; N, newton (SI unit of breaking strength).