| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
07/01/2016 |
|
Data da última atualização: |
03/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
KERN, E. L.; COBUCI, J. A.; COSTA, C. N.; MCMANUS, C. M.; BRACCINI NETO, J. |
|
Afiliação: |
Elisandra Lurdes Kern; Jaime Araujo Cobuci; CLAUDIO NAPOLIS COSTA, CNPGL; Concepta Margaret McManus; José Braccini Neto. |
|
Título: |
Genetic association between longevity and linear type traits of Holstein cows. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Scientia Agricola, v. 72, n. 3, p.203-209, 2015. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Longevity is a desirable trait in the dairy industry because of its relationship to profitability. The aim of this study was to estimate genetic parameters for longevity measurements related to productive life, or life in the herd, and linear type traits of Brazilian Holstein cows born between the years 1990 and 2008. The (co) variance components were estimated by the restricted maximum likelihood method. The heritability for measurements of longevity and linear type traits ranged from 0.05 to 0.07 and 0.08 to 0.39, respectively. The genetic correlations between measurements of longevity and linear type traits ranged from -0.39 to 0.31. Direct selection for longevity does not necessarily lead to long-lived cows, due to low heritability. Indirect genetic selection for udder depth, bone quality, udder height, rear teat placement and conformation traits showed the highest genetic correlations with measurements of time between birth and last milk record and time from first calving to last milk record. |
|
Palavras-Chave: |
Mammary system; Productive life; Rear teat placement. |
|
Thesaurus Nal: |
genetic correlation. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/136788/1/Cnpgl-2015-SciAgric-Genetic.pdf
|
|
Marc: |
LEADER 01642naa a2200217 a 4500
001 2033243
005 2024-02-03
008 2015 bl uuuu u00u1 u #d
100 1 $aKERN, E. L.
245 $aGenetic association between longevity and linear type traits of Holstein cows.$h[electronic resource]
260 $c2015
520 $aLongevity is a desirable trait in the dairy industry because of its relationship to profitability. The aim of this study was to estimate genetic parameters for longevity measurements related to productive life, or life in the herd, and linear type traits of Brazilian Holstein cows born between the years 1990 and 2008. The (co) variance components were estimated by the restricted maximum likelihood method. The heritability for measurements of longevity and linear type traits ranged from 0.05 to 0.07 and 0.08 to 0.39, respectively. The genetic correlations between measurements of longevity and linear type traits ranged from -0.39 to 0.31. Direct selection for longevity does not necessarily lead to long-lived cows, due to low heritability. Indirect genetic selection for udder depth, bone quality, udder height, rear teat placement and conformation traits showed the highest genetic correlations with measurements of time between birth and last milk record and time from first calving to last milk record.
650 $agenetic correlation
653 $aMammary system
653 $aProductive life
653 $aRear teat placement
700 1 $aCOBUCI, J. A.
700 1 $aCOSTA, C. N.
700 1 $aMCMANUS, C. M.
700 1 $aBRACCINI NETO, J.
773 $tScientia Agricola$gv. 72, n. 3, p.203-209, 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
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 |
|
Circulação/Nível: |
B - 2 |
|
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
|
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
