Growth performance, nutrient digestibility, intestinal morphology, cecal mucosal cytokines and serum antioxidant responses of broiler chickens to dietary enzymatically treated yeast and coccidia challenge

Table 6 Main effects of ETY and coccidia challenge on the intestinal morphology and goblet cells of broiler chickens, d 21 post hatching^a

Item	Concentrations of ETY, g/kg			CS		SD^a	P-value
	Concentrations of ETY, g/kg			CS			Challenge	ETY		Challenge × ETY interaction
	0	1	2	No-challenge	Challenge		Challenge	L	Q	Challenge × ETY interaction
Ileum
Villi height, μm	529.9	564.9	608.3	539.4	596.0	143.53	0.180	0.131	0.930	0.848
Crypt depth, μm	208.0	157.4	196.2	144.9	229.5	52.55	< 0.001	0.536	0.009	0.238
VH:CD ratio	2.9	3.6	3.5	3.8	2.8	0.76	< 0.001	0.042	0.083	0.677
GC count (cells/villi)	90.1	116.9	122.5	112.1	107.5	24.75	0.478	< 0.001	0.142	0.972
GC density (cells/μm of VH)	0.8	1.0	1.1	1.0	0.9	0.27	0.101	0.030	0.255	0.540
Jejunum
Villi height, μm	643.6	640.3	640.7	710.1	573.0	111.19	< 0.001	0.974	0.954	0.583
Crypt depth, μm	266.0	275.7	285.6	180.3	371.2	66.01	< 0.001	0.400	0.984	0.919
VH:CD ratio	3.0	3.0	2.8	4.2	1.7	0.76	< 0.001	0.476	0.633	0.451
GC count (cells/villi)	75.4	79.3	78.9	73.2	82.6	22.82	0.194	0.576	0.731	0.446
GC density (cells/μm of VH)	0.6	0.6	0.6	0.5	0.7	0.20	0.012	0.771	0.859	0.986
No. of replicates	16	15	16	24	23

ETY Enzymatically treated yeast, CS Challenge state, L Linear effect of ETY, Q Quadratic effect of ETY, VH:CD ratio Villus height to crypt depth ratio, GC Goblet cell, VH Villus height
^aSD Standard deviation

ISSN: 2049-1891