Tithonia diversifolia improves in vitro rumen microbial synthesis of sheep diets without changes in total gas and methane production

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dc.creatorSimón Pérez-Márquez
dc.creatorVagner S. Ovani
dc.creatorPaulo de Mello Tavares Lima
dc.creatorÂngela Maria Quintão Lana
dc.creatorHelder Louvandini
dc.creatorAdibe Luiz Abdalla
dc.creatorRogério Martins Maurício
dc.date.accessioned2025-01-22T22:48:08Z
dc.date.accessioned2025-09-08T23:47:19Z
dc.date.available2025-01-22T22:48:08Z
dc.date.issued2023-11-04
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3390/agronomy13112768
dc.identifier.issn2073-4395
dc.identifier.urihttps://hdl.handle.net/1843/79423
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofAgronomy
dc.rightsAcesso Aberto
dc.subjectProdução animal
dc.subjectProteção ambiental
dc.subjectMetano
dc.subjectRuminante Alimentação e rações
dc.subject.otherIn vitro gas production
dc.subject.otherRumen protein
dc.subject.otherIn vitro degradability
dc.subject.otherMethane
dc.titleTithonia diversifolia improves in vitro rumen microbial synthesis of sheep diets without changes in total gas and methane production
dc.typeArtigo de periódico
local.citation.epage19
local.citation.issue11
local.citation.spage1
local.citation.volume13
local.description.resumoAmong the alternatives identified as capable of making livestock farming a more efficient activity and reducing its environmental impact, the use of feeds with high digestibility and the use of non-conventional fodder species can be highlighted. Tithonia diversifolia (Hemsl.) A. Gray (TD) has already gained attention as a feed for ruminants. Nonetheless, there has been little discussion about the impacts of this plant on the rumen dynamics that lead to better animal performance. The aim of this study was to assess how increasing levels of TD could affect ruminal microbial biomass synthesis, degradability, and in vitro gas production (IVGP) of diets. Four diets were evaluated: a control diet (TD0: 400 g kg−1 soybean meal and maize grain, and 600 g kg−1 Tifton 85 hay (Cynodon spp.)) and three increasing levels of TD (TD9: 90, TD27: 270, and TD45: 450 g kg−1–dry matter basis) as a replacement for dietary roughage. A 96 h IVGP assay was carried out and five incubation times (2, 4, 10, 24, and 96 h) were used for degradability determination. Gas produced, methane (CH4), degradability of organic matter (IVDOM), short-chained fatty acid (SCFA) production, partitioning factor (PF), and microbial biomass (MB) were evaluated among treatments. There was no significant effect (p > 0.05) between TD inclusion and IVGP at most incubation times; only at 6 h of incubation did gas production increase linearly with TD inclusion (R2 = 0.19; p < 0.05). TD inclusion had no effects on CH4. IVDOM increased linearly with TD inclusion at 6 and 10 h, with TD45 being more degradable than the control diet at 6 h only. There was a positive linear relationship (R2 = 0.20; p < 0.05) between TD inclusion and PF. TD45 had significantly higher PF values than the control. MB also increased linearly (R2 = 0.30; p < 0.05) with TD inclusion, and all diets with TD had significantly more MB than the control diet. The inclusion of TD at the levels used in this work was revealed to have a positive impact on microbial protein synthesis, which could be related to the higher microbial efficiency of increased substrate quality.
local.identifier.orcidhttps://orcid.org/0000-0003-3108-8159
local.identifier.orcidhttps://orcid.org/0000-0003-2179-5861
local.identifier.orcidhttps://orcid.org/0000-0002-6354-3139
local.identifier.orcidhttps://orcid.org/0000-0003-0066-6198
local.identifier.orcidhttps://orcid.org/0000-0001-7129-8463
local.identifier.orcidhttps://orcid.org/0000-0002-5440-9974
local.identifier.orcidhttps://orcid.org/0000-0002-5688-2255
local.publisher.countryBrasil
local.publisher.departmentVET - DEPARTAMENTO DE ZOOTECNIA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/2073-4395/13/11/2768

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