Replacing hexane by 2-methyloxolane for defatting soybean meal does not impair fattening performance of beef cattle supplemented with methionine - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Conference Papers Year : 2024

Replacing hexane by 2-methyloxolane for defatting soybean meal does not impair fattening performance of beef cattle supplemented with methionine

Abstract

Chemical fat extraction for producing soybean meal (SBM) uses solvents like extraction-grade hexane (Hex). Concerns over health risks from n-hexane residues have motivated the exploration of alternatives like 2-methyloxolane (2-meOx), a bio-based solvent derived from agricultural by-products. However, differences in processing techniques between Hex and 2-meOx SBM may lead to varying nutritive values, potentially impacting animal performances. The aim of this study was to evaluate the performance of beef cattle fed grass silage diets with 2-meOx compared to hexane-extracted SBM, with or without supplementation of rumen-protected methionine (RPM). Thirty-six young Charolais bulls (248 ± 21.7 days) were studied during three consecutive 70d-feed efficiency tests until slaughter. Treatments resulted from a factorial design crossing two types of SBM (Hex vs 2-meOx) with 2 levels of RPM (supplemented or not). DM intake did not differ significantly among the four treatments for any of the three 70-day efficiency tests (P>0.05). Diets supplemented with RPM promoted higher average daily gain and feed conversion efficiency during the initial 70-day feed efficiency test, particularly in diets containing 2-meOx (SBM x RPM interaction; P≤0.02). Additionally, carcass weight, whole-body protein deposition, and nitrogen use efficiency increased with RPM supplementation, especially in diets containing 2-meOx (SBM x RPM interaction; P≤0.005). Our results highlight the potential of using 2-meOx as a bio-based solvent for SBM production in beef cattle diets but suggest a higher methionine deficit compared to Hex SBM.
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Dates and versions

hal-04743727 , version 1 (18-10-2024)

Identifiers

  • HAL Id : hal-04743727 , version 1

Cite

Carlos Garcia-Vazquez, Valentin Menoury, Pascal Faure, Lorène Salis, Anne Ferlay, et al.. Replacing hexane by 2-methyloxolane for defatting soybean meal does not impair fattening performance of beef cattle supplemented with methionine. The 75th Annual Meeting of the European Federation of Animal Science (EAAP), EAAP, Sep 2024, Florence, Italy. pp.222. ⟨hal-04743727⟩
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