In sacco evaluation of ruminal degradability of isoflavones from full‐fat soybean and extracted soybean meal—A pilot study

Abstract

Isoflavones are polyphenolic compounds that are an important part of the plant's defence system and that show a wide range of biological activities in humans and animals (Křížová et al., 2019). In connection with the ruminant diets, the most important sources of isoflavones are red clover and soybean containing 0.8-11 mg/g and 1.2-4.2 mg/g dry weight of isoflavones, respectively (Kurzer & Xu, 1997;Steinshamn et al., 2008). Their concentration depends on many factors such as the geographical area of production, season, variety or agrotechnical conditions (e.g. Berhow et al., 2020;