. 2018 Sep 4;96(10):4385–4397. doi: 10.1093/jas/sky272

Table 2.

Growth performance of finishing steers fed a diet supplemented with antibiotics (ANT), active dried yeast (ADY), encapsulated ADY (EDY), or mixture of ADY and EDY (MDY)

	Treatments¹					SEM	P <
Item	Control	ANT	ADY	EDY	MDY	SEM	P <
BW, kg
Initial	448	448	448	448	448	8.4	1.00
Final	627	623	628	625	631	10.9	0.99
DMI, kg/d
Day 1–28	9.97^a	8.82^b	10.11^a	9.81^a	10.35^a	0.32	0.01
Day 29–56	11.32	10.76	11.73	11.62	11.60	0.35	0.32
Day 57–84	11.35	11.18	11.95	12.17	12.05	0.40	0.31
Day 85–112	11.42	11.39	11.70	11.75	11.85	0.38	0.88
Overall	11.0^a,b	10.5^b	11.4^a	11.3^a	11.5^a	0.20	0.05
ADG, kg/d
Day 1 to 28	1.84^b	1.57^c	1.78^b	1.85^b	2.13^a	0.12	0.04
Day 29 to 56	1.74^a,b	1.92^a	1.80^a	1.51^b	1.49^b	0.11	0.02
Day 57 to 84	1.40	1.31	1.50	1.65	1.64	0.11	0.13
Day 85 to 112	1.40	1.46	1.36	1.27	1.27	0.09	0.50
Overall	1.59	1.57	1.61	1.57	1.63	0.06	0.94
G:F, g/kg
Day 1 to 28	186.0	176.9	174.9	188.5	205.6	10.8	0.29
Day 29 to 56	155.4^b	178.6^a	154.2^b	130.6^c	128.4^c	8.4	0.01
Day 57 to 84	122.2	114.1	125.6	135.7	136.4	8.1	0.26
Day 85 to 112	123.1	130.6	115.1	110.0	106.5	7.7	0.18
Overall	146.7	150.1	142.5	141.2	144.2	4.7	0.58

^a,b,cLeast square means within a row with different superscripts differ (P < 0.05).

¹Control = no yeast and no antibiotics; ANT (330 mg monensin + 110 mg tylosin·steer⁻¹d⁻¹); ADY (1.5 g ADY·steer⁻¹d⁻¹); EDY (3 g·steer⁻¹d⁻¹; EDY consisted of 1.5 g ADY and 1.5 g capsule material); and MDY (1.5 g ADY + 3.0 g EDY·steer⁻¹d⁻¹); Treatment × days on-feed were significant at P < 0.05 for DMI, ADG, and G:F.