Energy metabolism and partition of lactating Zebu and crossbred Zebu cows in different planes of nutrition

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dc.creatorPedro Henrique de Araujo Carvalho
dc.creatorIran Borges
dc.creatorEloisa de Oliveira Simões Saliba
dc.creatorAntônio Último de Carvalho
dc.creatorAna Luiza Costa Cruz Borges
dc.creatorHelena Ferreira Lage
dc.creatorPaolo Antônio Dutra Vivenza
dc.creatorJosé Reinaldo Mendes Ruas
dc.creatorElias Jorge Facury Filho
dc.creatorRodrigo Liberio Araújo Palhano
dc.creatorLúcio Carlos Gonçalves
dc.creatorDiogo Gonzaga Jayme
dc.creatorRicardo Reis e Silva
dc.date.accessioned2024-04-16T20:20:23Z
dc.date.accessioned2025-09-09T00:12:29Z
dc.date.available2024-04-16T20:20:23Z
dc.date.issued2018-08-17
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doi10.1371/journal. pone.0202088
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/1843/67260
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPublic Library of Science One
dc.rightsAcesso Aberto
dc.subjectMetabolismo Animal
dc.subjectLactação
dc.subjectVaca Leiteira
dc.subjectNutrição Animal
dc.subjectGado Zebu
dc.titleEnergy metabolism and partition of lactating Zebu and crossbred Zebu cows in different planes of nutrition
dc.typeArtigo de periódico
local.citation.epage10
local.citation.issue8
local.citation.spage1
local.citation.volume13
local.description.resumoThe aim of this study was to determine the energy metabolism and partition of lactating Gyr and F1 Holstein x Gyr (F1 HxG) cows in different planes of nutrition. Six F1 HxG and six Gyr cows with 130 days in milking (DIM) fed corn silage and concentrate were evaluated. The experiment consisted of four periods with different levels of feeding: 1st ad libitum dry matter intake (DMI) and the others with 5, 10 and 20% restricted DMI, related to the first one. An apparent digestibility assay was performed before measurements in the respiration chamber. Total feces were collected for three days. The cows were confined for 24h in the chamber in each period to determine methane and heat production (HP). F1 HxG had higher gross energy intake (GEI), metabolisable energy intake (MEI) and digestible energy intake (DEI). GE lost in feces was higher in F1 HxG (23.7% GEI) than in Gyr (20.5%) cows. Energy lost as methane and urine was similar between the groups. The metabolisability (q) was 0.67, and the efficiency of converting ME to NE (k) was 0.56. There was no difference in the energy requirements for maintenance between breeds (426.6 MJ/kg BW0,75 average value). The energy requirements for lactation were higher in F1 HxG animals due to the higher volume of milk produced, since there was no difference in energy requirements for production of one kg of milk.
local.publisher.countryBrasil
local.publisher.departmentVET - DEPARTAMENTO DE ZOOTECNIA
local.publisher.initialsUFMG
local.url.externahttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0202088

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