Effects of different forms of yeast Saccharomyces cerevisiae on growth performance, intestinal development, and systemic immunity in early-weaned piglets

Table 4 Effects of different forms of yeasts Saccharomyces cerevisiae on the morphology of small intestine of piglets^a

Item^b	Dietary treatment^c				SEM	P value
Item^b	Control	LY	HKY	SFY	SEM	P value
Duodenum
Day 7 villus height, μm	358.91^f	395.78^d	367.64^ef	382.25^de	5.60	0.003
Day 7 crypt depth, μm	223.50	218.28	223.61	218.49	4.80	0.75
Day 7 V/C	1.61^e	1.81^d	1.64^e	1.75^d	0.03	<0.001
Day 21 villus height, μm	376.73	408.22	388.34	412.68	5.66	0.06
Day 21 crypt depth, μm	229.36	236.55	230.95	234.03	2.58	0.80
Day 21 V/C	1.64^f	1.73^de	1.68^ef	1.76^d	0.02	0.02
Jejunum
Day 7 villus height, μm	361.80^e	394.68^d	368.09^e	384.73^d	4.90	0.002
Day 7 crypt depth, μm	221.81	218.28	219.43	215.29	3.60	0.65
Day 7 V/C	1.64^e	1.81^d	1.68^e	1.79^d	0.03	0.001
Day 21 villus height, μm	380.39	402.70	390.83	380.39	4.96	0.21
Day 21 crypt depth, μm	228.16	222.69	236.92	228.16	3.06	0.47
Day 21 V/C	1.67^ef	1.81^d	1.65^f	1.67^ef	0.03	0.04

^aValues are means for n = 4 replicates. Diet LY contained 3 g/kg of live yeast; diet HKY contained 2.66 g/kg of heat-killed yeast; and diet SFY contained 3 g/kg of superfine yeast powder, both derived from LY
^bV/C stands for villous height: crypt depth
^c LY live yeast, HKY heat-killed whole yeast, SFY superfine yeast powders
^{d, e, f}Means in a row without a common letter differ (P < 0.05)

ISSN: 2049-1891