Feed value of pulp from fresh and ensiled grass-clover forage

Abstract

Biorefinery of forages produces a protein-rich press juice, and a fibre-rich pulp. Use of ensiled in addition to fresh forage gives the potential to use the biorefinery all year round but the ensiling of forage can affect the quality of biorefined products. The aim was to evaluate the feed value of the pulp from fresh compared to ensiled timothy-red clover forage. Forage from first cut was pre-wilted and chopped at 28% dry matter (DM). One part of the fresh forage was kept intact (F) and another part was refined to pulp, which was ensiled in bales (FP). A third part of the fresh forage was ensiled in bales (S) and the final silage was refined to pulp (SP). The pulps had higher concentrations of DM and neutral detergent fibre (NDF) with a greater increase in SP compared to FP. DM intakes of FP and SP were lower compared to F and S, which were related to higher NDF concentrations of the pulps. SP had lower in vivo digestibility of organic matter (OM) compared to S, whereas no difference was found between F and FP. Thus, biorefinery of fresh or ensiled forage affects the chemical composition and, consequently, in vivo OM digestibility of the pulps differently.

Keywords

biorefinery; digestibility; fibre; forage; protein; ruminant

Published in

Grassland Science in Europe
2022, number: 27, pages: 231-234
Title: Grassland at the heart of circular and sustainable food systems : Proceedings of the 29th General Meeting of the European Grassland Federation Caen, France 26-30 June 2022
Publisher: Wageningen Academic Publishers

Conference

29th General Meeting of the European Grassland Federation Caen, France 26-30 June 2022

SLU Authors

• Nadeau, Elisabet

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    
  • The Rural Economy and Agricultural Societies

• Dahlström, Frida

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

• Oliveira de Sousa, Dannylo

  • Department of Applied Animal Science and Welfare, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Agricultural Science
Animal and Dairy Science

Publication identifier

• ISBN: 978-2-7380-1445-0
• eISBN: 978-2-7380-1446-7

Permanent link to this page (URI)

https://res.slu.se/id/publ/120663