steers, feedlots performance, carcass traits, yeast
The objective of this study was to determine if yeast culture (Yea-Sacc, Alltech, Inc., USA) affects feedlot performance and carcass characteristics of yearling steers fed a corn-based finishing diet containing less than 10% roughage. Crossbred yearlings (1 08 steers, avg 874 Ib) were fed a rolled corn diet (8.44% ground alfalfa hay) without (CON) or with Yea-Sacc (YS, 9 g per head per day) for 95 days. Final weights were 15 1b greater (P < .07) for YS steers than CON as a result of a 12.3% increase in daily gain between day 29 and day 57 (P<.03). Daily gains were 4.1 % greater for YS-fed steers overall (P<.07). Dry matter intake was not affected by treatment (P> .20). Feed efficiency tended to be improved for YS steers between day 29 and day 57 (P< .1 1) but did not differ at other times or overall (P> .20). Treatment increased carcass weights by 13 1b (P < .09) but did not affect dressing percentage or frequency of abscessed livers (P>.20). Effects on quality and yield grade, while significant, were small. The inclusion of yeast culture in a corn-based diet containing less than 10% roughage improved daily rate of gain but did not affect intake or efficiency and had minimal effect on carcass characteristics.
Number of Pages
South Dakota State University
Copyright © 1994 South Dakota State University.
Birkelo, C. P. and Berg, R. K., "Effect of Yeast Culture Product (Yea-Sacc) on Feedlot Performance of Yearling Cattle Fed a High Concentrate Finishing Diet" (1994). South Dakota Beef Report, 1994. 5.