Genomic-enhanced breeding values for heat stress tolerance in Girolando cattle in Brazil

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorAssociação Brasileira de Criadores de Girolando-
Autor(es): dc.contributorUniversidade Federal Santa Maria-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorPurdue University-
Autor(es): dc.contributorUniversidade Federal do Rio Grande do Sul-
Autor(es): dc.creatorNegri, Renata-
Autor(es): dc.creatorDaltro, Darlene-
Autor(es): dc.creatorKluska, Sabrina-
Autor(es): dc.creatorOtto, Pamela Itajara-
Autor(es): dc.creatorMachado, Marco Antonio-
Autor(es): dc.creatordo Carmo Panetto, João Cláudio-
Autor(es): dc.creatorMartins, Marta Fonseca-
Autor(es): dc.creatorde Oliveira, Hinayah Rojas-
Autor(es): dc.creatorCobuci, Jaime Araújo-
Autor(es): dc.creatorda Silva, Marcos Vinicius Gualberto Barbosa-
Data de aceite: dc.date.accessioned2025-08-21T17:58:56Z-
Data de disponibilização: dc.date.available2025-08-21T17:58:56Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2023.105360-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300363-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300363-
Descrição: dc.descriptionHeat stress is a major challenge for dairy herds and can lead to significant production reduction, mainly in tropical climate. Differences in decreased milk production in animals is associated with genetic variation. The overall goal was to investigate the effect of heat stress in milk yield of Girolando cattle in tropical climate and to identify the most appropriate statistical approach for evaluation and selection for heat tolerance in different breed compositions of Girolando. Therefore, to quantify heat stress effects on milk yield loss in Girolando cattle, random regression models were applied on test-day milk yield records (TDMY) and weather data. In addition, different statistical models were evaluated for estimating variance components and predicting breeding values for heat stress (HS). The data comprised 648,072 TDMY of 69,431 first-lactation Girolando cows of different breed compositions, and 21,147 genotyped animals, with daily temperature and humidity measurements from weather stations closest to the tested herds, between 2000 and 2020. We used daily mean values of temperature-humidity index (THI) for the day of test and the 3 previous days as the measure of HS. Heat stress thresholds estimated for the different breed compositions of Girolando in this study were THI 80 for 1/4H, 1/2H and 5/8H; THI 78 for 3/4H animals and THI 77 for 7/8H animals. Average milk production can decrease by up to 34% due to heat stress. Estimated average heritability for TDMY regressed to the THI was 0.21, while the heritability estimated for TDMY regressed to the DIM was 0.29. A correlation of 0.55 was observed between the GEBVs of HS tolerance and GEBV milk yield. The parameters estimated in this study indicate that genomic selection for heat tolerance in dairy cattle is a step towards ensuring valuable tropical production efficiency and improving animal welfare in the face of predicted increases in heat stress events and increase tropical production efficiency.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionFaculdade de Engenharia Universidade Estadual Paulista (Unesp), Av. Brasil, 56, SP-
Descrição: dc.descriptionAssociação Brasileira de Criadores de Girolando, R. Orlando Viêira do Nascimento, 74, MG-
Descrição: dc.descriptionUniversidade Federal Santa Maria, Av. Roraima, 1000 - Cidade Universitária, RS-
Descrição: dc.descriptionEmbrapa Gado de Leite - Rua Eugênio do Nascimento, 610 - Dom Bosco, MG-
Descrição: dc.descriptionPurdue University, 270 S. Russell Street-
Descrição: dc.descriptionUniversidade Federal do Rio Grande do Sul, Av. Paulo Gama, 110 - Bairro Farroupilha, RS-
Descrição: dc.descriptionFaculdade de Engenharia Universidade Estadual Paulista (Unesp), Av. Brasil, 56, SP-
Descrição: dc.descriptionFAPEMIG: APQ-02750-23-
Idioma: dc.languageen-
Relação: dc.relationLivestock Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAnimal welfare-
Palavras-chave: dc.subjectHeat comfort threshold-
Palavras-chave: dc.subjectHolstein-Gir crossbreeding, Longitudinal data-
Palavras-chave: dc.subjectTemperature-humidity index-
Palavras-chave: dc.subjectTropical climate-
Título: dc.titleGenomic-enhanced breeding values for heat stress tolerance in Girolando cattle in Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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