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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: |
26/11/2014 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KERN, E. L.; COBUCI, J. A.; COSTA, C. N.; PIMENTEL, C. M. McM. |
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Afiliação: |
ELISANDRA LURDES KERN; JAIME ARAÚJO COBUCI; CLAUDIO NAPOLIS COSTA, CNPGL; CONCEPTA MARGARET MCMANUS PIMENTEL, UNB; INCT-Pecuária, Belo Horizonte, MG. |
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Título: |
Factor analysis of linear type traits and their relation with longevity in brazilian Holstein cattle. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Asian-Australas Journal of Animal Science, v. 27, n. 6, p. 784-790, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
In this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationship with longevity and 305 d first lactation milk production. Low partial correlations (−0.19 to 0.38), the medium to high Kaiser sampling mean (0.79) and the significance of the Bartlett sphericity test (p<0.001), indicated correlations between type traits and the suitability of these data for a factor analysis, after the elimination of seven traits. Two factors had autovalues greater than one. The first included width and height of posterior udder, udder texture, udder cleft, loin strength, bone quality and final score. The second included stature, top line, chest width, body depth, fore udder attachment, angularity and final score. The linear regression of the factors on several measures of longevity and 305 d milk production showed that selection considering only the first factor should lead to improvements in longevity and 305 milk production. |
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Palavras-Chave: |
Autovalues; Final Score; Linear Regression. |
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Thesaurus Nal: |
Holstein; longevity; milk production. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01748naa a2200229 a 4500
001 2000969
005 2024-02-05
008 2014 bl uuuu u00u1 u #d
100 1 $aKERN, E. L.
245 $aFactor analysis of linear type traits and their relation with longevity in brazilian Holstein cattle.$h[electronic resource]
260 $c2014
520 $aIn this study we aimed to evaluate the reduction in dimensionality of 20 linear type traits and more final score in 14,943 Holstein cows in Brazil using factor analysis, and indicate their relationship with longevity and 305 d first lactation milk production. Low partial correlations (−0.19 to 0.38), the medium to high Kaiser sampling mean (0.79) and the significance of the Bartlett sphericity test (p<0.001), indicated correlations between type traits and the suitability of these data for a factor analysis, after the elimination of seven traits. Two factors had autovalues greater than one. The first included width and height of posterior udder, udder texture, udder cleft, loin strength, bone quality and final score. The second included stature, top line, chest width, body depth, fore udder attachment, angularity and final score. The linear regression of the factors on several measures of longevity and 305 d milk production showed that selection considering only the first factor should lead to improvements in longevity and 305 milk production.
650 $aHolstein
650 $alongevity
650 $amilk production
653 $aAutovalues
653 $aFinal Score
653 $aLinear Regression
700 1 $aCOBUCI, J. A.
700 1 $aCOSTA, C. N.
700 1 $aPIMENTEL, C. M. McM
773 $tAsian-Australas Journal of Animal Science$gv. 27, n. 6, p. 784-790, 2014.
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Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
24/10/2018 |
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Data da última atualização: |
14/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SANTANA, M. da S.; ANDRADE, E. M. de; GIONGO, V. |
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Afiliação: |
MÔNICA DA SILVA SANTANA, Universidade Federal do Ceará; EUNICE MAIA DE ANDRADE, Universidade Federal do Ceará; VANDERLISE GIONGO, CPATSA. |
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Título: |
Particulate organic carbon in agrosystems in the brazilian Semiarid. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings. Rio de Janeiro: SBCS, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Drylands cover about 40% of the planet, in which 44% are occupied with cultivated systems. Covering 45% of Brazilian Semiarid the grasslands are main land use this region. In order to increase biomass production and provide food for goats, sheep and bovines are implanted different agrosystems with differences species Cenchurs ciliairis L. (CC), Opuntia ficus indica Mill. (OF), Gliricidia sepium Jacq. (Walp.) (GS), Leucaena leucocephala Lam. De Wit. (LL). However, with removal of native vegetation (NV) there is a change in supply plant material and hence in soil organic matter (SOM), which is formed by substances in different stages of decomposition. Among the chemical components contained in SOM is carbon (C), the main structuring element of nature. In soils, the C can be in the form particulate organic carbon (POC), coming from the biotic residues being quite susceptible to change of land use, and mineral-associated carbon fraction formed by organomineral complexes that are not available to decomposition . POC is associated with the active compartment and can be lost more eas ly, depending on land use. In sense, to evaluate how the introduction of new species for animal feeding can modify the POC, soil samples were collected at following depths: 0-5, 5-10, 10-15, 15-20, 20-30, 30- 40 cm, with four replicates for uses with different ages: NV (always preserved), CC (30 yr), OF (21 yr), GS (17 yr) and LL (24 yr). The air dried soil was separated in a 53 ?m sieve, where the particles larger than >53 ?m corresponded to POC. MenosDrylands cover about 40% of the planet, in which 44% are occupied with cultivated systems. Covering 45% of Brazilian Semiarid the grasslands are main land use this region. In order to increase biomass production and provide food for goats, sheep and bovines are implanted different agrosystems with differences species Cenchurs ciliairis L. (CC), Opuntia ficus indica Mill. (OF), Gliricidia sepium Jacq. (Walp.) (GS), Leucaena leucocephala Lam. De Wit. (LL). However, with removal of native vegetation (NV) there is a change in supply plant material and hence in soil organic matter (SOM), which is formed by substances in different stages of decomposition. Among the chemical components contained in SOM is carbon (C), the main structuring element of nature. In soils, the C can be in the form particulate organic carbon (POC), coming from the biotic residues being quite susceptible to change of land use, and mineral-associated carbon fraction formed by organomineral complexes that are not available to decomposition . POC is associated with the active compartment and can be lost more eas ly, depending on land use. In sense, to evaluate how the introduction of new species for animal feeding can modify the POC, soil samples were collected at following depths: 0-5, 5-10, 10-15, 15-20, 20-30, 30- 40 cm, with four replicates for uses with different ages: NV (always preserved), CC (30 yr), OF (21 yr), GS (17 yr) and LL (24 yr). The air dried soil was separated in a 53 ?m sieve, where the par... Mostrar Tudo |
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Palavras-Chave: |
Agricultura de terras áridas; Agroecossistema; Carbono orgânico do solo; Semiárido. |
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Thesagro: |
Dióxido de Carbono; Matéria Orgânica; Solo; Uso da Terra. |
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Thesaurus NAL: |
Dryland farming; Soil organic carbon; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185045/1/Vanderlise.pdf
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Marc: |
LEADER 02416nam a2200265 a 4500
001 2098133
005 2023-12-14
008 2018 bl uuuu u00u1 u #d
100 1 $aSANTANA, M. da S.
245 $aParticulate organic carbon in agrosystems in the brazilian Semiarid.$h[electronic resource]
260 $aIn: WORLD CONGRESS OF SOIL SCIENCE, 21., 2018, Rio de Janeiro. Soil science: beyond food and fuel: proceedings. Rio de Janeiro: SBCS$c2018
520 $aDrylands cover about 40% of the planet, in which 44% are occupied with cultivated systems. Covering 45% of Brazilian Semiarid the grasslands are main land use this region. In order to increase biomass production and provide food for goats, sheep and bovines are implanted different agrosystems with differences species Cenchurs ciliairis L. (CC), Opuntia ficus indica Mill. (OF), Gliricidia sepium Jacq. (Walp.) (GS), Leucaena leucocephala Lam. De Wit. (LL). However, with removal of native vegetation (NV) there is a change in supply plant material and hence in soil organic matter (SOM), which is formed by substances in different stages of decomposition. Among the chemical components contained in SOM is carbon (C), the main structuring element of nature. In soils, the C can be in the form particulate organic carbon (POC), coming from the biotic residues being quite susceptible to change of land use, and mineral-associated carbon fraction formed by organomineral complexes that are not available to decomposition . POC is associated with the active compartment and can be lost more eas ly, depending on land use. In sense, to evaluate how the introduction of new species for animal feeding can modify the POC, soil samples were collected at following depths: 0-5, 5-10, 10-15, 15-20, 20-30, 30- 40 cm, with four replicates for uses with different ages: NV (always preserved), CC (30 yr), OF (21 yr), GS (17 yr) and LL (24 yr). The air dried soil was separated in a 53 ?m sieve, where the particles larger than >53 ?m corresponded to POC.
650 $aDryland farming
650 $aSoil organic carbon
650 $aSoil organic matter
650 $aDióxido de Carbono
650 $aMatéria Orgânica
650 $aSolo
650 $aUso da Terra
653 $aAgricultura de terras áridas
653 $aAgroecossistema
653 $aCarbono orgânico do solo
653 $aSemiárido
700 1 $aANDRADE, E. M. de
700 1 $aGIONGO, V.
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