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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
25/11/2021 |
Data da última atualização: |
29/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
STUMPF, M. T.; KOLLING, G. J.; FISCHER, V.; DALTRO, D. dos S.; ALFONZO, E. P. M.; DALCIN, V. C.; DIAS, L. T.; SILVA, M. V. G. B.; PERIPOLLI, V.; MCMANUS, C. M. |
Afiliação: |
MARCELO TEMPEL STUMPF, Universidade Federal do Rio Grande; GIOVANI JACOB KOLLING, Universidade Federal do Rio Grande do Sul; VIVIAN FISCHER, Universidade Federal do Rio Grande do Sul; DARLENE DOS SANTOS DALTRO, Universidade Federal do Rio Grande do Sul; EVELYN PRISCILA MUNCHEN ALFONZO, Universidade Federal do Rio Grande do Sul; VANESSA CALDERARO DALCIN, Universidade Federal do Rio Grande do Sul; LAILA TALARICO DIAS, Universidade Federal de Paraná; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; VANESSA PERIPOLLI, Instituto Federal Catarinense; CONCEPTA MARGARET MCMANUS, Universidade de Brasília. |
Título: |
Elevated temperature-humidity index induces physiological, blood and milk alterations in Holstein cows in a more pronounced manner than in ½ and ¾ Holstein × Gir. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Journal of Animal Behaviour and Biometeorology, v. 9, n. 4, p. 2140, 2021. |
DOI: |
https://doi.org/10.31893/jabb.21040 |
Idioma: |
Inglês |
Conteúdo: |
Bos taurus taurus and Bos taurus indicus cattle subspecies present different capabilities in coping with situations of elevated temperatures, the latter being more tolerant to heat stress. Thus, some breeding programs crossed these subspecies to produce a high producing yet heat-tolerant breed (Girolando). Nineteen Holstein (H100) and 19 Girolando cows [(½ Holstein × Gir (H50) and ¾ Holstein × Gir (H75)] with similar milk production were used in a six-day experiment to evaluate the consequences of heat stress due to shade deprivation on their physiological, blood and milk traits. Cows were exposed to a non-shaded environment between morning (06:00h; GMT -3:00) and evening milking (14:30h; GMT -3:00) with access to water ad libitum. Procedures were conducted before morning and evening milkings. Physiological parameters related to mechanisms of heat dissipation were measured, as well as the milk composition. Blood traits were evaluated. The temperature-humidity index (THI) was calculated. Statistical procedures included analysis of variance, correlation, and principal factors. THI was elevated during the trial and negatively impacted physiological, milk, and blood parameters in H100, H75, and H50. Alterations in physiology, milk stability, milk composition, and blood traits were more pronounced in H100. Holstein cows presented changes in physiological parameters in a more pronounced manner and in some milk and blood traits related to the reduced capability of this breed in dealing with elevated THI. The similarity in milk production levels excludes this parameter as a justification for differences in heat tolerance, with genetic composition being the main reason for these results. MenosBos taurus taurus and Bos taurus indicus cattle subspecies present different capabilities in coping with situations of elevated temperatures, the latter being more tolerant to heat stress. Thus, some breeding programs crossed these subspecies to produce a high producing yet heat-tolerant breed (Girolando). Nineteen Holstein (H100) and 19 Girolando cows [(½ Holstein × Gir (H50) and ¾ Holstein × Gir (H75)] with similar milk production were used in a six-day experiment to evaluate the consequences of heat stress due to shade deprivation on their physiological, blood and milk traits. Cows were exposed to a non-shaded environment between morning (06:00h; GMT -3:00) and evening milking (14:30h; GMT -3:00) with access to water ad libitum. Procedures were conducted before morning and evening milkings. Physiological parameters related to mechanisms of heat dissipation were measured, as well as the milk composition. Blood traits were evaluated. The temperature-humidity index (THI) was calculated. Statistical procedures included analysis of variance, correlation, and principal factors. THI was elevated during the trial and negatively impacted physiological, milk, and blood parameters in H100, H75, and H50. Alterations in physiology, milk stability, milk composition, and blood traits were more pronounced in H100. Holstein cows presented changes in physiological parameters in a more pronounced manner and in some milk and blood traits related to the reduced capability of this breed in dea... Mostrar Tudo |
Palavras-Chave: |
Alteração sanguínea; Blood alterations; Tolerância ao calor. |
Thesagro: |
Fisiologia; Gado Leiteiro; Produção Leiteira. |
Thesaurus Nal: |
Dairy cattle; Heat tolerance; Milk yield; Physiology. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228091/1/Elevated-temperature-humidity.pdf
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Marc: |
LEADER 02852naa a2200361 a 4500 001 2136549 005 2021-12-29 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.31893/jabb.21040$2DOI 100 1 $aSTUMPF, M. T. 245 $aElevated temperature-humidity index induces physiological, blood and milk alterations in Holstein cows in a more pronounced manner than in ½ and ¾ Holstein × Gir.$h[electronic resource] 260 $c2021 520 $aBos taurus taurus and Bos taurus indicus cattle subspecies present different capabilities in coping with situations of elevated temperatures, the latter being more tolerant to heat stress. Thus, some breeding programs crossed these subspecies to produce a high producing yet heat-tolerant breed (Girolando). Nineteen Holstein (H100) and 19 Girolando cows [(½ Holstein × Gir (H50) and ¾ Holstein × Gir (H75)] with similar milk production were used in a six-day experiment to evaluate the consequences of heat stress due to shade deprivation on their physiological, blood and milk traits. Cows were exposed to a non-shaded environment between morning (06:00h; GMT -3:00) and evening milking (14:30h; GMT -3:00) with access to water ad libitum. Procedures were conducted before morning and evening milkings. Physiological parameters related to mechanisms of heat dissipation were measured, as well as the milk composition. Blood traits were evaluated. The temperature-humidity index (THI) was calculated. Statistical procedures included analysis of variance, correlation, and principal factors. THI was elevated during the trial and negatively impacted physiological, milk, and blood parameters in H100, H75, and H50. Alterations in physiology, milk stability, milk composition, and blood traits were more pronounced in H100. Holstein cows presented changes in physiological parameters in a more pronounced manner and in some milk and blood traits related to the reduced capability of this breed in dealing with elevated THI. The similarity in milk production levels excludes this parameter as a justification for differences in heat tolerance, with genetic composition being the main reason for these results. 650 $aDairy cattle 650 $aHeat tolerance 650 $aMilk yield 650 $aPhysiology 650 $aFisiologia 650 $aGado Leiteiro 650 $aProdução Leiteira 653 $aAlteração sanguínea 653 $aBlood alterations 653 $aTolerância ao calor 700 1 $aKOLLING, G. J. 700 1 $aFISCHER, V. 700 1 $aDALTRO, D. dos S. 700 1 $aALFONZO, E. P. M. 700 1 $aDALCIN, V. C. 700 1 $aDIAS, L. T. 700 1 $aSILVA, M. V. G. B. 700 1 $aPERIPOLLI, V. 700 1 $aMCMANUS, C. M. 773 $tJournal of Animal Behaviour and Biometeorology$gv. 9, n. 4, p. 2140, 2021.
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Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
13/01/1998 |
Data da última atualização: |
03/04/2013 |
Autoria: |
VALICENTE, F. H.; PEIXOTO, M. J. V. V. D.; PAIVA, E.; KITAJIMA, E. W. |
Afiliação: |
FERNANDO HERCOS VALICENTE, CNPMS. |
Título: |
Identificação e purificação de um vírus de granulose em Spodoptera frugiperda (Lepidoptera: noctuidae). |
Ano de publicação: |
1991 |
Fonte/Imprenta: |
In: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1985-1987. Sete Lagoas, 1991. p. 77. |
Idioma: |
Português |
Palavras-Chave: |
Corpos de inclusao; Lagarta-do-cartucho; Lepidoptera noctuidae; Minas Gerais; Patologia de insetos; Sete Lagoas. |
Thesagro: |
Baculovirus; Milho; Spodoptera Frugiperda; Zea Mays. |
Thesaurus NAL: |
corn; inclusion bodies; insect pathology. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/80365/1/Identificacao-purificacao.pdf
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Marc: |
LEADER 01014naa a2200301 a 4500 001 1478423 005 2013-04-03 008 1991 bl uuuu u00u1 u #d 100 1 $aVALICENTE, F. H. 245 $aIdentificação e purificação de um vírus de granulose em Spodoptera frugiperda (Lepidoptera$bnoctuidae).$h[electronic resource] 260 $c1991 650 $acorn 650 $ainclusion bodies 650 $ainsect pathology 650 $aBaculovirus 650 $aMilho 650 $aSpodoptera Frugiperda 650 $aZea Mays 653 $aCorpos de inclusao 653 $aLagarta-do-cartucho 653 $aLepidoptera noctuidae 653 $aMinas Gerais 653 $aPatologia de insetos 653 $aSete Lagoas 700 1 $aPEIXOTO, M. J. V. V. D. 700 1 $aPAIVA, E. 700 1 $aKITAJIMA, E. W. 773 $tIn: EMBRAPA. Centro de Nacional de Pesquisa de Milho e Sorgo. Relatório técnico anual do Centro Nacional de Pesquisa de Milho e Sorgo 1985-1987. Sete Lagoas, 1991. p. 77.
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