Cattlemen's Day, 1975; Report of progress (Kansas State University. Agricultural Experiment Station); 230; Beef; Roughage; Milo; Finishing steers


We used 75 yearling steers in a 92-day trial to evaluate three sources of roughage: (1) chopped prairie hay; (2) milo stover silage; and (3) milo stover pellets; and five milo treatments: (1) dry, 85.5% dry matter (DM); (2) field harvested, high moisture (F-HM), 72.6% DM, ensiled in an O2-limiting structure; (3) F-HM, 79.5% DM, treated with 1.75% ammonium isobutyra1te on a wet basis and stored in a metal bin; (4) F-HM, 73.6% DM, rolled and ensiled in a 10 ft. x 50 ft. concrete stave silo; and (5) harvested at 85.5% DM and reconstituted to 73.3% DM, rolled and ensiled in a 10 ft. x 50 ft. concrete stave silo. Neither performance or carcass characteristic differences could be attributed to source of roughage when it was fed at 15% of the ration dry matter, which indicates that milo stover can be effectively used in finishing rations. Steers fed high-moisture milo treated with AIB or stored in an O2 -limiting structure performed similarly and gained faster (P<.05) and more efficiently (P<.05) than steers fed dry milo.

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