Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/16548 |
Resumo: | In this paper, the effects of breed (Corriedale and Romney), age group (2-7 years old) and sampling year (1978-81) upon the fibre diameter-crimp frequency relationship were examined in 2,878 wool samples. Breed was the factor which contributed most to the variation in the overall diameter-crimp frequency relationship. At a given crimp number, the results showed that younger sheep (two to three-year old) produced wools significantly finer than the old sheep and that environmental variations among years influenced the adjusted mean fibre diameter. The data suggested that, by affecting the crimp to diameter correspondence, the factors examined here may have a direct and significant consequence on the efficiency of predicting the wool fibre diameter through the staple crimp frequency. |
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Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditionsRelação diâmetro/frequência de ondulações da lã de ovinos de distintas raças e idades, e em condições ambientais diversassheep; breed; age; environmental conditions; wool characteristics relationship.ovinos; raça; idade; condições ambientais; características da lã.In this paper, the effects of breed (Corriedale and Romney), age group (2-7 years old) and sampling year (1978-81) upon the fibre diameter-crimp frequency relationship were examined in 2,878 wool samples. Breed was the factor which contributed most to the variation in the overall diameter-crimp frequency relationship. At a given crimp number, the results showed that younger sheep (two to three-year old) produced wools significantly finer than the old sheep and that environmental variations among years influenced the adjusted mean fibre diameter. The data suggested that, by affecting the crimp to diameter correspondence, the factors examined here may have a direct and significant consequence on the efficiency of predicting the wool fibre diameter through the staple crimp frequency.Foram estudados os efeitos das raças Corriedale e Romney Marsh, de idade do ovino (2-7 anos) e de ano de amostragem (1978-81), sobre o relacionamento entre diâmetro médio de fibras e frequência de ondulações em 2.878 amostras de lã. Os resultados indicaram que a raça foi o mais importante fator que contribuiu para a variação da relação diâmetro-ondulação. A dado número de ondulações na mecha, os dados mostraram que grupos de ovinos de dois e três anos de idade produziram lãs significativamente mais finas que os de mais idade, e que as oscilações ambientais entre anos determinaram importantes variações na média ajustada de diâmetro da lã. Os resultados sugerem que, por afetar a correspondência da frequência de ondulações ao diâmetro, os fatores examinados neste estudo podem ter uma direta e significante consequência sobre a eficiência de estimar-se subjetivamente o diâmetro da lã através de sua frequência de ondulações.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraOliveira, Nelson R. Manzoni deKennedy, John P.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16548Pesquisa Agropecuaria Brasileira; v.24, n.11, nov. 1989; 1413-1420Pesquisa Agropecuária Brasileira; v.24, n.11, nov. 1989; 1413-14201678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16548/10824info:eu-repo/semantics/openAccess2014-08-29T19:29:18Zoai:ojs.seer.sct.embrapa.br:article/16548Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-29T19:29:18Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions Relação diâmetro/frequência de ondulações da lã de ovinos de distintas raças e idades, e em condições ambientais diversas |
title |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
spellingShingle |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions Oliveira, Nelson R. Manzoni de sheep; breed; age; environmental conditions; wool characteristics relationship. ovinos; raça; idade; condições ambientais; características da lã. |
title_short |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
title_full |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
title_fullStr |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
title_full_unstemmed |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
title_sort |
Diameter-crimp frequency relationship of wool from sheep on different breeds and age groups, and in varying environmental conditions |
author |
Oliveira, Nelson R. Manzoni de |
author_facet |
Oliveira, Nelson R. Manzoni de Kennedy, John P. |
author_role |
author |
author2 |
Kennedy, John P. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Oliveira, Nelson R. Manzoni de Kennedy, John P. |
dc.subject.por.fl_str_mv |
sheep; breed; age; environmental conditions; wool characteristics relationship. ovinos; raça; idade; condições ambientais; características da lã. |
topic |
sheep; breed; age; environmental conditions; wool characteristics relationship. ovinos; raça; idade; condições ambientais; características da lã. |
description |
In this paper, the effects of breed (Corriedale and Romney), age group (2-7 years old) and sampling year (1978-81) upon the fibre diameter-crimp frequency relationship were examined in 2,878 wool samples. Breed was the factor which contributed most to the variation in the overall diameter-crimp frequency relationship. At a given crimp number, the results showed that younger sheep (two to three-year old) produced wools significantly finer than the old sheep and that environmental variations among years influenced the adjusted mean fibre diameter. The data suggested that, by affecting the crimp to diameter correspondence, the factors examined here may have a direct and significant consequence on the efficiency of predicting the wool fibre diameter through the staple crimp frequency. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16548 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16548 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16548/10824 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.24, n.11, nov. 1989; 1413-1420 Pesquisa Agropecuária Brasileira; v.24, n.11, nov. 1989; 1413-1420 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416653782908928 |