(en) Energy value of potato by-products in ruminant. A digestibility measurement aiming at determining the energetic values of the three most important by-products of the potato industry was performed in sheep maintained on metabolic pens under standard conditions. The "mash-peel'', a starch rich by-product resulting from a deep peeling of the tubers was compared to the "screening'' (uncooked fault cuttings) and to the "proteopulp'' (starch potato pulp supplemented with protein). All by-products were characterized by a digestibility of the organic matter higher than 80%. The same was true for the digestibility of the crude energy, except for the "proteopulp'' where the value was slightly lower than 80%. The digestibility of the crude protein and of the crude fiber showed more important differences between the by-products. In particular, the crude protein was weakly digestible in the "screening'' (26%) whereas the crude fiber was highly digestible in the "proteopulp'' (80%). The net energetic values of the "mash-peel'' and of the "screening'' were close to 1.10 UFL and 1.05 UFV whereas for the "proteopulp'', they were of 0.96 UFL and 0.94 UFV.
Vanabelle, B., Poupard, F., Besancenot, J.-M., D’Arleux, F. M., Weiss, P., & Larondelle, Y. (2000). Valeur énergétique des co-produits de la pomme de terre chez le ruminant. Annales de Zootechnie, 49(5), 399-404. https://doi.org/10.1051/animres:2000131 (Original work published 2000)