Table 3.

Growth performance (Day 21–Day 35), relative weight and length of gastrointestinal (GI) tract, and intestinal content viscosity of broilers (n = 10).

Item	Control	CV	CV + R	CV + M	SEM	P-value
Initial body weight, g	787	788	780	783	12.7	0.969
Final body weight, g	1,867	1,928	1,923	1,929	52.9	0.811
Body weight gain, g/d	77.2	81.4	81.6	81.8	2.401	0.991
Feed intake, g/pen	385.3	371.9	393.5	373.4	10.93	0.463
Feed conversion ratio	1.59	1.54	1.53	1.60	0.037	0.395
Relative weight of GI tract, g/kg body weight
Crop	2.62	2.39	2.30	2.72	0.116	0.547
Gizzard	13.9	13.7	13.7	13.0	0.29	0.680
Pancreas	2.86	3.09	3.09	3.18	0.074	0.485
Liver	23.4	24.3	26.6	26.7	0.68	0.357
Duodenum	6.99	7.76	7.96	7.56	0.219	0.444
Jejunum	13.7	13.6	13.7	14.3	0.38	0.929
Ileum	11.1	10.9	11.0	11.8	0.27	0.611
Cecum1	4.58	4.72	5.41	5.21	0.173	0.285
Relative length of GI tract, cm/kg body weight
Duodenum	18.8	18.3	18.9	19.3	0.27	0.596
Jejunum	45.3	46.4	45.4	49.4	0.62	0.057
Ileum	45.6	44.8	47.0	48.6	0.78	0.312
Cecum1	10.8	10.2	10.8	9.79	0.175	0.108
Content viscosity, cP
Duodenum + jejunum	3.63a	5.38b	6.79c	6.52b,c	0.362	<0.001
Ileum	5.21a	10.5b	12.7b	13.6b	1.06	<0.001

^a.b.cDifferent superscripts within a row indicate a significant difference (P < 0.05).

Dietary treatments: Control, corn-soybean basal diet; CV, basal diet plus 10% C. vulgaris; CV + R, basal diet plus 10% C. vulgaris + 0.005% Rovabio Excel AP; CV + M, basal diet plus 10% C. vulgaris + 0.01% mix of 4 CAZymes.

Abbreviation: CAZymes, Carbohydrate-Active enZymes.

¹Cecum: weight of 2 ceca.