03207naa a2200505 a 450000100080000000500110000800800410001902200140006002400520007410000160012624502180014226000090036050000180036952016660038765000160205365000290206965000290209865000220212765000310214965000180218065000180219865000180221665000090223465000210224365000230226465000230228765300160231065300150232665300260234165300340236770000200240170000170242170000190243870000160245770000200247370000200249370000220251370000160253570000220255170000210257370000220259470000200261670000230263677300420265921725472025-02-10       2024    bl uuuu     u00u1 u    #d  a1877-26417 ahttps://doi.org/10.1007/s12649-024-02798-52DOI1 aTIMM, T. G.  aKing palm (Archontophoenix alexandrae) byproduct valorization by Lentinula edodes colonization for ruminant’s dietbin vitro effects on ruminal fermentation and greenhouse gases emissions.h[electronic resource]  c2024  aOnline first.  aPurpose This study aimed to assess the effects of a new high-value bioproduct from the King palm byproduct valorization on in vitro ruminal fermentation variables. Methods The bioproduct was developed through solid-state fermentation of King-palm’s shells supplemented with soybean meal and cassava bagasse, carried out by Lentinula edodes. Three in vitro experiments were performed to evaluate the in vitro gas production profiles (GP), enteric methane (CH4) and carbon dioxide (CO2) production, volatile fatty acids (VFA), and ammonia–nitrogen (NH3-N), comparing the bioproduct with corn silage (Exp. 1), brachiaria hay, and sugarcane (in nature) (Exp. 2), and on the replacement of corn silage in beef cattle finishing diets (0%, 33%, 66%, and 100%) (Exp. 3). Results For Exp. 1 and 2, the first 24 h of total GP bioproduct had the lowest value compared to corn silage, brachiaria hay, and sugarcane, as well as for 48 h and 72 h. The in vitro organic matter digestibility (IVOMD), production of CH4 and CO2, and total VFA concentrations were lower for the bioproduct than corn silage, brachiaria hay, and sugarcane. Bioproduct concentrations (Exp. 3) did not affect total GP at 24 h and 48 h incubations, IVOMD, CH4, and CO2 production, pH, total VFA concentration, and NH3-N concentration. The NDF degradation rate decreased with the bioproduct inclusion concentrations. Conclusion This study highlighted a promising nutrient source and bioactive compound reservoir for cattle diets, demonstrating efficacy in vitro ruminal fermentation. This agro-industry and livestock sector integration could promote a circular bioeconomy, enhancing sustainability.  aBeef cattle  aGreenhouse gas emissions  aSolid state fermentation  aWaste utilization  aArchontophoenix Alexandrae  aEfeito Estufa  aFermentação  aGado de Corte  aGás  aLentinula Edodes  aResíduo Agrícola  aResíduo Orgânico  aBioeconomia  aBioeconomy  aGas production system  aSistema de produção de gás1 aROCHA, B. M. da1 aSAVIO, R. L.1 aCAMARGO, G. S.1 aMAGNANI, E.1 aLOREGIAN, K. E.1 aCAGLIARI, A. R.1 aCASAGRANDE, A. C.1 aHELM, C. V.1 aTAVARES, L. B. B.1 aMARCONDES, M. I.1 aHELENA BRANCO, R.1 aPAULA, E. M. de1 aBENEDETI, P. D. B.  tWaste and Biomass Valorization, 2024.