Chemical composition and CNCPS protein fractions of some feed ingredients used in livestock

Abstract

The present study was conducted to evaluate proximate composition, cell wall fractions (%DM) and CNCPS protein fractions (%CP) of various feed ingredients used in ruminant nutrition. Total ten different feed ingredients were taken and analysed for proximate composition, detergent analysis (cell wall fractions) and CNCPS protein fractions by AOAC (2005), Van Soest et al. (1991) and Sniffen et al. (1992), respectively. The crude protein content (%DM) ranges from 9.80 in oat fodder to 40.39 in GNC. The NDF and ADF content (%DM) ranges from 18.84 to 64.41 and 6.29 to 40.61 in pearl millet grain and oat fodder, respectively. PA fraction (%CP) ranges from 5.68 in GNC to 25.37 in MOC whereas Pc fraction (%CP) ranges from 2.83 in GNC to 12.96 in DORB, respectively. CNCPS protein fractions consider instantaneously degradable and non degradable parts of protein based on degradation kinetics occurring in ruminants to provide better status of actual feed protein available and estimate requirements accordingly.