Table 1: 2nd Rumensin/Tylan Vs MSE Feedlot Trial

University of Nebraska, Panhandle Research Center

Rumensin-Tylan

MSE a

No. of pens

6

6

No. of steers

51

51

Initial weight, lb

810

814

Daily gain, 84day,lb

4.04

4.19

Final weight, lbb

1,284

1,305

Daily gain, 139d, lbb

3.41

3.54

Feed DM intake, lb

21.82

21.91

Feed/gain

6.41

6.19

Hot carcass weight, lb

796

809

Dressing percent

63.58

63.96

Fat thickness, in

0.31

0.29

Rib eye area, in2

14.3 c

14.6 d

Rib eye area, in.2 / cwt carc.

1.8

1.8

Marbling scoree

5.07

4.97

Quality gradef

18.2

18

Percent Choice

51

45.3

Yield grade

2.05

1.92

Liver abscesses, %

13.2

11.3