Technical note: effects of supplementation of expired human foodstuffs on intake and digestion by wethers fed a base diet of grass hay and alfalfa/barley pellets.

There is potential for expired human foodstuffs to be used as an energy supplement for livestock. Sixteen crossbred wether lambs were used in a completely randomized design to investigate the effects of feeding supplemental expired human foodstuffs on DM, OM, ADF and NDF digestibility, and intake. Wethers were fed (DM basis) isocaloric amounts of the following treatments: whole barley served as the control (BAR: 0.20 kg·wether-1·d-1), potato chips (PC: 0.15 kg·wether-1·d-1), macaroni (MAC: 0.21 kg·wether-1·d-1), and donuts (DON: 0.15 kg·wether-1·d-1). Wethers were fed 0.60 kg·wether-1·d-1 alfalfa/barley pellets and allowed ad libitum access to chopped hay. Wethers were placed in confinement crates for a 7-d acclimation period, fitted with fecal bags on d 0 and fed twice daily. Following acclimation, daily intakes, refusals, and fecal outputs were used to determine DM, OM, fiber digestibility and intake. Measures of intake and digestibility did not differ (P > 0.23) among treatments. It is concluded that these expired human foodstuffs have the potential to be used in ruminant diets as an alternative to traditional feedstuffs.

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