TY - JOUR
T1 - Preservation of Fungal-Treated Cowpea Straw in Association with Discarded Apple by Ensilage Process
AU - Andrade, Ederson
AU - Mendes-Ferreira, Ana
AU - Botelho, Sofia
AU - Marques, Guilhermina
AU - Cone, John W.
AU - Rodrigues, Miguel
AU - Ferreira, Luís
PY - 2021
Y1 - 2021
N2 - The available agroindustry residues show high potential to be used as animal feedstuffs. This study aimed to valorise cowpea straw and discarded apple as potential ingredients for livestock diets through an ensiling process. Silage characteristics of cowpea straw (15%, as fresh) treated with Pleurotus citrinopileatus in association with discarded apple using or not a commercial inoculant were evaluated. At the moment of opening the silo, silages were stable and presented low pH values (≤ 4.2), high lactic acid concentration, no butyric acid, and aerobic stability averaged 134 h. The inoculated silage presented higher (p < 0.01) neutral detergent fibre, water-soluble carbohydrate (WSC), lactic acid and ethanol, but lower (p < 0.01) acetic acid concentrations. The use of the commercial inoculant increased the amount of lactic acid bacteria in the pre-mixture and at the time of opening the silo. No differences were observed in enterobacteriaceae, yeast and moulds count in both treatments until 288 h of air exposure. The pre-ensiled mixture showed a high ensilability potential, and the utilization of a silage inoculant enhanced the silage fermentation process promoting changes on the silage microflora. Graphic Abstract: [Figure not available: see fulltext.]
AB - The available agroindustry residues show high potential to be used as animal feedstuffs. This study aimed to valorise cowpea straw and discarded apple as potential ingredients for livestock diets through an ensiling process. Silage characteristics of cowpea straw (15%, as fresh) treated with Pleurotus citrinopileatus in association with discarded apple using or not a commercial inoculant were evaluated. At the moment of opening the silo, silages were stable and presented low pH values (≤ 4.2), high lactic acid concentration, no butyric acid, and aerobic stability averaged 134 h. The inoculated silage presented higher (p < 0.01) neutral detergent fibre, water-soluble carbohydrate (WSC), lactic acid and ethanol, but lower (p < 0.01) acetic acid concentrations. The use of the commercial inoculant increased the amount of lactic acid bacteria in the pre-mixture and at the time of opening the silo. No differences were observed in enterobacteriaceae, yeast and moulds count in both treatments until 288 h of air exposure. The pre-ensiled mixture showed a high ensilability potential, and the utilization of a silage inoculant enhanced the silage fermentation process promoting changes on the silage microflora. Graphic Abstract: [Figure not available: see fulltext.]
KW - Ensilability
KW - Fermentation quality
KW - Legume straw
KW - Nutritional valorization
KW - White-rot fungi
U2 - 10.1007/s12649-021-01396-z
DO - 10.1007/s12649-021-01396-z
M3 - Article
AN - SCOPUS:85101255952
VL - 12
SP - 5533
EP - 5543
JO - Waste and Biomass Valorization
JF - Waste and Biomass Valorization
SN - 1877-2641
IS - 10
ER -