Influence of Dry Roasting of Whole Faba Beans (Vicia faba) and Whole Lupin Seeds (Lupinus albus) on Rumen Disappearance and Estimated Intestinal Digestion of CP Using the Optimal Three-Step In Vitro Technique in Dairy Cows

Abstract

The effects of dry roasting whole faba beans (WFB) and whole lupin seeds (WLS) at 110, 130 or 1507deg;C for 15, 30 or 45 min on rumen (RDCP%), estimated intestinal (IDCP%) and total tract disappearance of CP (TDCP%) and intestinal availability (IARUCP%) of rumen undegraded CP (RUCP%) were determined. The RDCP values were estimated by in sacco technique by incubating nylon bags for 8, 12 and 24 h in the rumen of dairy cows. The IDCP and IARUCP values were estimated using a sequence of ruminal incubation, in vitro incubation in acid-pepsin for 1 h and then in pancreatin for 24 h of three-step in vitro procedure technique. Dry roasting at 130 and 150°C decreased RDCP with correspondingly increa..