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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
14/11/2023 |
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Data da última atualização: |
14/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NEGRI, R.; DALTRO, D.; KLUSKA, S.; OTTO, P. I.; MACHADO, M. A.; PANETTO, J. C. do C.; MARTINS, M. F.; OLIVEIRA, H. R. de; COBUCI, J. A.; SILVA, M. V. G. B. |
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Afiliação: |
RENATA NEGRI, UNIVERSIDADE ESTADUAL PAULISTA; DARLENE DALTRO, ASSOCIAÇAO BRASILEIRA DE CRIADORES DE GIROLANDO; SABRINA KLUSKA, ASSOCIAÇAO BRASILEIRA DE CRIADORES DE GIROLANDO; PAMELA ITAJARA OTTO, UNIVERSIDADE FEDERAL SANTA MARIA; MARCO ANTONIO MACHADO, CNPGL; JOAO CLAUDIO DO CARMO PANETTO, CNPGL; MARTA FONSECA MARTINS, CNPGL; HINAYAH ROJAS DE OLIVEIRA, PURDUE UNIVERSITY; JAIME ARAÚJO COBUCI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL. |
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Título: |
Genomic-enhanced breeding values for heat stress tolerance in Girolando cattle in Brazil. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Livestock Science, v. 278, 105360, 2023. |
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DOI: |
https://doi.org/10.1016/j.livsci.2023.105360 |
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Idioma: |
Inglês |
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Conteúdo: |
Heat 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. MenosHeat 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 regresse... Mostrar Tudo |
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Palavras-Chave: |
Conforto térmico. |
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Thesagro: |
Bem-Estar; Bovino; Clima Tropical; Cruzamento Animal; Gado Gir; Gado Holandês; Temperatura; Umidade. |
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Thesaurus Nal: |
Animal welfare. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02994naa a2200361 a 4500
001 2158381
005 2023-11-14
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.livsci.2023.105360$2DOI
100 1 $aNEGRI, R.
245 $aGenomic-enhanced breeding values for heat stress tolerance in Girolando cattle in Brazil.$h[electronic resource]
260 $c2023
520 $aHeat 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.
650 $aAnimal welfare
650 $aBem-Estar
650 $aBovino
650 $aClima Tropical
650 $aCruzamento Animal
650 $aGado Gir
650 $aGado Holandês
650 $aTemperatura
650 $aUmidade
653 $aConforto térmico
700 1 $aDALTRO, D.
700 1 $aKLUSKA, S.
700 1 $aOTTO, P. I.
700 1 $aMACHADO, M. A.
700 1 $aPANETTO, J. C. do C.
700 1 $aMARTINS, M. F.
700 1 $aOLIVEIRA, H. R. de
700 1 $aCOBUCI, J. A.
700 1 $aSILVA, M. V. G. B.
773 $tLivestock Science$gv. 278, 105360, 2023.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
19/09/2005 |
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Data da última atualização: |
27/10/2009 |
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Autoria: |
ADUAN, R. E.; VILELA, M. de F.; KLINK, C. A. |
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Título: |
Ciclagem de carbono em ecossistemas terrestres: o caso do cerrado brasileiro. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2003. |
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Páginas: |
30 p. |
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Série: |
(Embrapa Cerrados. Documentos, 105). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: In the Cerrado Biome, the internal carbon cycling, the main carbon pools size, and the fluxes intensity between carbon pools are far from to be completely understood. This study presents the main carbon pools and cycling fluxes in terrestrial ecosystems, emphasizing the neotropical savannas. This study will also review literature of internal carbon cycling in the Cerrado. In spite of the science advances, the knowledge of internal carbon dynamics in the Cerrado are scarce. The relation between the carbon pools size and fluxes intensity and the Cerrado's vegetation phytofisionomies, soil gradient, and climate still remains unknown. The carbon pools and fluxes data analysis show that the Cerrado's aerial carbon pools are smaller than the forest systems pools. However, the subterranean carbon pools are equal or greater than the high production forest systems. Scientific estimations showed that 2,050 Pg of carbon (1 Pg=10 (elevado a 15) g, or one billion tons) would be stocked in terrestrial ecosystems and 70% of it would be stocked soils. These data showed that soil is an important atmospheric carbon source and cleaner. In other natural and cultivated exosystems in the Cerrado Biome, the subterranean process needs more studies. |
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Palavras-Chave: |
Carbon cycling; Carbon fluxes; Fluxo de carbono. |
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Thesagro: |
Biomassa; Carbono; Cerrado; Matéria Orgânica; Serapilheira; Solo. |
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Thesaurus NAL: |
biomass; organic matter; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/26339/1/doc_105.pdf
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Marc: |
LEADER 02036nam a2200301 a 4500
001 1569012
005 2009-10-27
008 2003 bl uuuu u0uu1 u #d
100 1 $aADUAN, R. E.
245 $aCiclagem de carbono em ecossistemas terrestres$bo caso do cerrado brasileiro.
260 $aPlanaltina, DF: Embrapa Cerrados$c2003
300 $a30 p.
490 $a(Embrapa Cerrados. Documentos, 105).
520 $aABSTRACT: In the Cerrado Biome, the internal carbon cycling, the main carbon pools size, and the fluxes intensity between carbon pools are far from to be completely understood. This study presents the main carbon pools and cycling fluxes in terrestrial ecosystems, emphasizing the neotropical savannas. This study will also review literature of internal carbon cycling in the Cerrado. In spite of the science advances, the knowledge of internal carbon dynamics in the Cerrado are scarce. The relation between the carbon pools size and fluxes intensity and the Cerrado's vegetation phytofisionomies, soil gradient, and climate still remains unknown. The carbon pools and fluxes data analysis show that the Cerrado's aerial carbon pools are smaller than the forest systems pools. However, the subterranean carbon pools are equal or greater than the high production forest systems. Scientific estimations showed that 2,050 Pg of carbon (1 Pg=10 (elevado a 15) g, or one billion tons) would be stocked in terrestrial ecosystems and 70% of it would be stocked soils. These data showed that soil is an important atmospheric carbon source and cleaner. In other natural and cultivated exosystems in the Cerrado Biome, the subterranean process needs more studies.
650 $abiomass
650 $aorganic matter
650 $asoil
650 $aBiomassa
650 $aCarbono
650 $aCerrado
650 $aMatéria Orgânica
650 $aSerapilheira
650 $aSolo
653 $aCarbon cycling
653 $aCarbon fluxes
653 $aFluxo de carbono
700 1 $aVILELA, M. de F.
700 1 $aKLINK, C. A.
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Embrapa Cerrados (CPAC) |
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