Table 5.

Treatment by day interaction for small intestine length relative to body weight (cm/100 g) of broilers in ovo inoculated with different concentrations of the probiotic Enterococcus faecium from GalliPro Hatch (GH): MV alone (Marek's vaccine with not addition of probiotic), 10⁵ cfu GH (MV + 10⁵ cfu GH/50 μL), 10⁶ cfu GH (MV + 10⁶ cfu GH/50 μL), and 10⁷ cfu GH (MV + 10⁷ cfu GH/50 μL).¹

Day of grow-out	Jejunum				Ileum				Ceca
	MV alone	105 cfu GH	106 cfu GH	107 cfu GH	MV alone	105 cfu GH	106 cfu GH	107 cfu GH	MV alone	105 cfu GH	106 cfu GH	107 cfu GH
Day 0	37.2b	42.8a	42.4a	43.7a	31.5c	38.3a,b	41.1a	36.7b	8.29b	7.77b	9.16a	8.06b
Day 7	24.1c	23.2c	25.1c	26.1c	22.7e	24.2d,e	24.9d,e	26.3d	4.22c	4.28c	4.30c	4.64c
Day 14	11.7d	11.3d	11.5d	9.17d,e	10.3f,g	11.2f	9.95f,g,h	8.72f,g,h,i	2.29d	2.51d	2.26d	1.96d,e
Day 21	6.51e	7.52e	7.48e	6.75e	6.68h,i	7.39g,h,i	6.59i	6.71h,i	1.47e	1.54e	1.46e	1.34e
P value	0.01				0.002				0.03
SEM	1.107				1.193				0.238

For each tissue, means in a row and column not sharing a common superscript are different (P ≤ 0.005).

¹Means are calculated from 10 replicate values using one randomly chosen bird per pen and each pen as the experimental unit (10 pens/treatment, 16 birds/pen; 160 total birds/treatment).