Table 3.

Effects of a blend of Saccharomyces cerevisiae-based direct-fed microbial and fermentation products on the serum biochemical indices of beef steers during a 42 d receiving period¹

Item	CON	PROB	SEM	P-value
Albumin, g/dL	3.51	3.57	0.05	0.41
Alkaline phosphatase, U/L	158.0	155.0	8.68	0.80
Aspartate aminotransferase, U/L	89.8	84.3	7.13	0.60
Calcium, mg/dL	10.3b	10.6a	0.10	0.01
γ-glutamyltransferase, U/L	13.8	13.9	1.07	0.96
Total protein, g/dL	6.57b	7.01a	0.04	0.01
Globulin concentration, g/dL	3.15b	3.43a	0.06	0.01
Urea N, mg/dL	9.97	9.82	0.45	0.82
Phosphorus, mg/dL	9.86	9.94	0.18	0.75
Magnesium, mg/dL	2.21	2.25	0.03	0.43

¹CON = control; PROB = a blend of Saccharomyces cerevisiae-based direct-fed microbial and fermentation products fed at 19 g/steer/d (PMI, Arden Hills, MN); SEM = standard error of mean.

^a,bWithin a row, treatment means with different superscripts differ, P ≤ 0.05.