Table 4.

Morphometric parameters of ruminal papillae and cecal pH of lambs fed a high-concentrate diet with or without added additives.

Item	Treatments 1				SEM	p-Value 2
	CON	ACL	CCL	BZA
Average area of ruminal papillae, cm2	0.277	0.224	0.282	0.259	0.014	0.465
Papillary surface absorption, %	90.67	91.10	90.94	90.13	0.398	0.783
Average number of ruminal papillae	35.23	45.57	35.96	36.38	1688	0.109
Absorptive surface area, cm2	10.29	10.79	10.59	8.91	0.468	0.302
Cecal pH	5.88 a	5.97 a	5.72 b	5.60 b	0.054	0.034

¹ CON: control without additive; ACL: ammonium chloride; CCL; calcium chloride; BZA: benzoic acid. ² Means without a common letter differ by the Student’s t-test (p < 0.05).