Nutrtion:Feed Withdrawal Improves Carcass Lean, Net Returns- Swine Research Review

摘要

Feed withdrawal of less than 36 hours prior to slaughter can be an effective tool to maximize carcass value by reducing market hog weights, saving producers unnecessary feed costs. But increased feed withdrawal time caused losses up to 3-4 dollar /carcass in studies at New Horizon Research Farm in Minnesota.Two studies were conducted to assess the effects of feed withdrawal time on carcass composition and net returns.In the first experiment, 728 pigs weighing an average of 286 lb. were marketed from 48 pens. They were randomly assigned to one of four treatments: feed withdrawal times of 7 (control), 24, 36 or 48 hours before harvest (Table 1).