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Effects of ensiled wheat straw with brewer’s spent yeast on milk production and nutrient utilisation in dairy cows

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dc.abstract.enBrewer’s spent yeast (BSY) is one of the most abundant byproducts of the brewing industry that creates environmental disposal challenges. However, its high nutritional value offers an opportunity to upgrade low-quality roughages in dairy cows’ nutrition. This study evaluated the effects of ensiled wheat straw with BSY and molasses on feed intake, digestibility, milk yield, and methane production in dairy cows compared to untreated wheat straw (UWS). Wheat straw was ensiled with BSY (0.6 l/kg) and molasses (10%) for five weeks. Three mid-lactation dairy cows (¾ Friesian × Boran) were assigned to three diets: UWS + 0.5 kg concentrate/l of milk (UWS+0.5C), ensiled wheat straw (EWS) + 0.5 kg concentrate/l of milk (EWS+0.5C), and EWS + 0.3 kg concentrate/l of milk (EWS+0.3C). EWS with BSY doubled crude protein content and reduced in vitro methane production by 28.3% (P < 0.01). EWS diets increased nutrient intake and digestibility (P < 0.01), except for neutral detergent fibre digestibility (P > 0.05). Milk yield increased by 1.13 kg/day in EWS+0.3C (P < 0.001), along with an improvement in milk total solids. Predicted methane emissions decreased by 15.7% in EWS+0.5C (P < 0.01), and net profit increased by 1.21 USD/day/cow in EWS+0.5C. These results demonstrate that ensiling wheat straw with BSY and molasses is an effective strategy to improve feed quality, milk production, sustainability emissions, and economic returns in dairy farming.
dc.affiliationWydział Medycyny Weterynaryjnej i Nauk o Zwierzętach
dc.affiliation.instituteKatedra Żywienia Zwierząt
dc.affiliation.instituteKatedra Hodowli Zwierząt i Oceny Surowców
dc.affiliation.instituteKatedra Chorób Wewnętrznych i Diagnostyki
dc.contributor.authorTerefe, G.
dc.contributor.authorSznajder, J.
dc.contributor.authorSzczesny, J.
dc.contributor.authorMekonnen, B.
dc.contributor.authorSidoruk, P.
dc.contributor.authorWalelegn, M.
dc.contributor.authorKitaw, G.
dc.contributor.authorFaji, M.
dc.contributor.authorDejene, M.
dc.contributor.authorYadessa, E.
dc.contributor.authorOlorunlowu, S.
dc.contributor.authorSteppa, Ryszard
dc.contributor.authorPelec, Tomasz
dc.contributor.authorMin, G.
dc.contributor.authorIrawan, A.
dc.contributor.authorRizki Yanza, Y.
dc.contributor.authorKumar Patra, A.
dc.contributor.authorSzumacher, Małgorzata
dc.contributor.authorCieślak, Adam
dc.date.access2025-11-26
dc.date.accessioned2025-11-26T12:41:24Z
dc.date.available2025-11-26T12:41:24Z
dc.date.copyright2025-11-24
dc.date.issued2025
dc.description.accesstimeat_publication
dc.description.bibliographybibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if1,5
dc.description.number4
dc.description.points100
dc.description.versionfinal_published
dc.description.volume34
dc.identifier.doi10.22358/jafs/207448/2025
dc.identifier.eissn2719-8448
dc.identifier.issn1230-1388
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/6112
dc.identifier.weblinkhttps://doi.org/10.22358/jafs/207448/2025
dc.languageen
dc.relation.ispartofJournal of Animal and Feed Sciences
dc.relation.pages626-634
dc.rightsCC-BY-NC
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enby-product
dc.subject.engreenhouse gases
dc.subject.enmilk yield
dc.subject.entreated feed
dc.titleEffects of ensiled wheat straw with brewer’s spent yeast on milk production and nutrient utilisation in dairy cows
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue4
oaire.citation.volume34