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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/77107
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dc.creatorAntônio de Sousa Brito Netopt_BR
dc.creatorCaio Júlio Lima Herbsterpt_BR
dc.creatorLuciana Castro Geraseevpt_BR
dc.creatorGilberto de Lima Macedo Juniorpt_BR
dc.creatorDayanne Ribeiro do Nascimentopt_BR
dc.creatorAmanda Cardoso Rochapt_BR
dc.creatorMaria Izabel Batista Pereirapt_BR
dc.creatorMarcos Inácio Marcondespt_BR
dc.creatorLuciano Pinheiro da Silvapt_BR
dc.creatorLeilson Rocha Bezerrapt_BR
dc.creatorRonaldo Lopes Oliveirapt_BR
dc.creatorElzania Sales Pereirapt_BR
dc.date.accessioned2024-10-01T21:50:19Z-
dc.date.available2024-10-01T21:50:19Z-
dc.date.issued2023-12-14-
dc.citation.volume161pt_BR
dc.citation.issue5pt_BR
dc.citation.spage734pt_BR
dc.citation.epage742pt_BR
dc.identifier.doihttps://doi.org/10.1017/S0021859623000515pt_BR
dc.identifier.issn1469-5146pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/77107-
dc.description.resumoThe objective was to evaluate energy partitioning and predict the relationship between metabolizable energy (ME) and digestible energy (DE) in hair sheep fed tropical diets at three feeding levels (maintenance, intermediate and high). To evaluate the energy partition, a database with 114 records (54 non-castrated males and 60 females) from comparative slaughter studies was used. To estimate the ratio ME:DE, 207 observations (74 non-castrated males and 133 females) were used from six studies in a multi-study approach, two indirect calorimetry studies (n = 93) and four comparative slaughter (n = 114), using a mixed model and study as random effect. A simple linear regression equation of the ME against DE was fitted to predict the efficiency of DE to ME conversion. Gas losses were greatest (P < 0.05) for animals fed at maintenance level (7.92% of gross energy intake). The variations of energy losses in the urine were 2.64, 2.06 and 2.08%; faecal losses were 34.37, 37.80 and 36.91% for maintenance, intermediary and high level of feeding, respectively. The regression analysis suggested a strong linear relationship between ME and DE, generating the model ME (MJ/day) = −0.1559 (±0.07525) + 0.8503 (±0.005864) × DE (MJ/day). This study highlights the importance of the relationship ME:DE. Equation/factor 0.85 presented herein is alternative that could be used for the calculation of ME from DE in feedlot diets tropical. In conclusion, we suggest that for hair sheep fed tropical diets the conversion factor 0.85 is more adequate to predict ME from DE.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIASpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofThe Journal of Agricultural Science-
dc.rightsAcesso Restritopt_BR
dc.subject.otherOvinospt_BR
dc.subject.otherAlimentação dos animaispt_BR
dc.subject.otherConfinamento (Animais)pt_BR
dc.titleFeed energy utilization by hair sheep: does the 0.82 conversion factor of digestible to metabolizable energy need to be revised?pt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.cambridge.org/core/journals/journal-of-agricultural-science/article/feed-energy-utilization-by-hair-sheep-does-the-082-conversion-factor-of-digestible-to-metabolizable-energy-need-to-be-revised/73D548D65DF3D924D57C6B24EF3393B0pt_BR
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