Potential of nutritional strategies to reduce enteric methane emission in feedlot sheep: A meta-analysis and multivariate analysis

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dc.contributor.authorSantos Torres, Rodrigo de Nazaré [UNESP]
dc.contributor.authorCoelho, Larissa de Melo
dc.contributor.authorGhedini, Caren Paludo
dc.contributor.authorNeto, Otavio Rodrigues Machado [UNESP]
dc.contributor.authorChardulo, Luis Artur Loyola [UNESP]
dc.contributor.authorTorrecilhas, Juliana Akamine [UNESP]
dc.contributor.authorde Lima Valença, Roberta
dc.contributor.authorBaldassini, Welder Angelo [UNESP]
dc.contributor.authorAlmeida, Marco Tulio Costa
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFederal University of Rio Grande do Sul (UFRGS)
dc.contributor.institutionFederal University of Espírito Santo
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionFederal University of Agreste of Pernambuco
dc.date.accessioned2023-07-29T16:04:43Z
dc.date.available2023-07-29T16:04:43Z
dc.date.issued2023-03-01
dc.description.abstractThe objective of this study was to use meta-analytical methods to evaluate the effects of nutritional strategies on the reduction of enteric methane emission in feedlot sheep. Additionally, this study aimed to evaluate interrelationships among diet composition, intake and digestibility of nutrients, rumen parameters, rumen microbial population, nitrogen metabolism and enteric methane production in sheep. The dataset was composed by 45 peer-reviewed publications with 102 treatment means. The strategies to mitigate enteric methane emission were evaluated by examining the weighted mean difference between control treatment (diets containing no additives and/or any other strategies to mitigate methane emission) and reduced-methane treatment (diets containing strategies to mitigate methane emission: protozoa-free, nitrate, lipids, saponins, essential oils and tannins). The interaction of factors associated with diet composition, nutrient intake and digestibility, rumen parameters on methane emission from sheep depends on how methane production is expressed (Production=CH4 g/d vs Yield= CH4 g/kg DMI). Lipids inclusion to diets reduced methane production in 6.28 g/d and 5.87 g CH4/kg of DMI. Oil inclusion in amounts greater than 20 g oil/day reduced methane production (CH4 g/d). Lipid inclusion to diets presented the greatest effectiveness in reducing methane emission in sheep fed TMR diets containing different forage: concentrate ratios. Tannins inclusion to diets reduced methane production in 1.22 g/d CH4 and 2.61 gCH4/kg of DMI, presenting long-term effect on methane emission. Tannins effects on methane production were greater in sheep fed high-forage total mixed rations. Rumen defaunation (protozoa-free) and essential oils inclusion to diets had no effects on methane production. Although methane production reduced with saponin and nitrate inclusion to diets, further studies are needed to confirm their effects on methane emission and better elucidate factors interacting with the response of sheep to saponins and nitrate supplementation.en
dc.description.affiliationSchool of Veterinary Medicine and Animal Science São Paulo State University, SP
dc.description.affiliationSchool of Agricultural and Veterinarian Science São Paulo State University
dc.description.affiliationDepartment of Animal Science Federal University of Rio Grande do Sul (UFRGS), RS
dc.description.affiliationDepartment of Animal Science Federal University of Espírito Santo, ES
dc.description.affiliationDepartment of Animal Science Luiz de Queiroz College of Agriculture University of São Paulo, SP
dc.description.affiliationFederal University of Agreste of Pernambuco, PE
dc.description.affiliationUnespSchool of Veterinary Medicine and Animal Science São Paulo State University, SP
dc.description.affiliationUnespSchool of Agricultural and Veterinarian Science São Paulo State University
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: FAPESP 2021/07222–5
dc.identifierhttp://dx.doi.org/10.1016/j.smallrumres.2023.106919
dc.identifier.citationSmall Ruminant Research, v. 220.
dc.identifier.doi10.1016/j.smallrumres.2023.106919
dc.identifier.issn0921-4488
dc.identifier.scopus2-s2.0-85147225986
dc.identifier.urihttp://hdl.handle.net/11449/249622
dc.language.isoeng
dc.relation.ispartofSmall Ruminant Research
dc.sourceScopus
dc.subjectCH4
dc.subjectFeedlot
dc.subjectLamb
dc.subjectLipids
dc.subjectPCA
dc.subjectTannins
dc.titlePotential of nutritional strategies to reduce enteric methane emission in feedlot sheep: A meta-analysis and multivariate analysisen
dc.typeArtigo

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Artigos - Química e Bioquímica - IBB