Table 2.

The effects of encapsulated zinc butyrate (E-ZnB) supplementation on ileal morphology after exposure to HS

	Control diet1	E-ZnB diet1,2	SEM	P value
Ileum villus height, µm	362	377	26	0.707
Ileum crypt depth, µm	245	204	17	0.141
Ileum villus:crypt depth ratio	1.59	1.87	0.14	0.192

¹Ileum morphology was measured from samples collected at the end of the 7-d HS period (n = 6).

²Pigs were supplemented with 7.5 kg E-ZnB/MT of feed for 24 d and exposed to biphasic heat stress for 7 d.