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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
29/05/2014 |
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Data da última atualização: |
01/06/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SHIOTSUKI, L.; OLIVEIRA, D. P. de; LOBO, R. N. B.; FACO, O. |
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Afiliação: |
LUCIANA SHIOTSUKI, Embrapa Goats and Sheep, Sobral, CE, Brazil; Danielle Pernambuco de Oliveira, Department of Animal Science, State University of Acaraú Valley, Sobral 62040-370, CE, Brazil; RAIMUNDO NONATO BRAGA LOBO, Embrapa Goats and Sheep, Sobral, CE, Brazil; OLIVARDO FACO, Embrapa Goats and Sheep, Sobral, CE, Brazil. |
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Título: |
Genetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Small Ruminant Research, Amsterdam, v. 120, n. 2/3, p. 204-208, Aug. 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of the present study was to estimate genetic parameters for growth and reproductive traits of Morada Nova sheep reared by smallholder farmers in the semi-arid northeastern region of Brazil. Data from 11 participating flocks, between 2007 and 2011, were used for the estimation of (co)variance components and genetic parameters for birth weight (BW), weight at weaning adjusted for 112 days of age (WW), average daily weight gain from birth to weaning (ADG), days to lambing (DL), lambing interval (LI), total litter weight at birth (LWB), total litter weight at weaning (LWW) and the ratio between total litter weight at birth and weaning and metabolic weight of the dam (LWB/MW and LWW/MW, respectively). The direct heritabilities obtained by one-trait analysis were 0.19, 0.14, 0.11, 0.13, 0.0, 0.44, 0.19, 0.41, 0.15, respectively for BW, WW, ADG, DL, LI, LWB, LWW, LWB/MW and LWW/MW. The direct heritabilities for BW and WW obtained by two-trait analysis were similar to those estimated by one-trait analysis. However, the direct heritabilities for LWB, LWW and LWW/MW obtained by two-trait analysis were higher than those estimated by one-trait analysis. The genetic correlation between BW and WW were 0.75 and between LWB, LWW and LWW/MW were 0.8, 0.9 and 1.0, respectively. In conclusion, except for LI, there is genetic variability that can be explored by direct and indirect selection to obtain genetic gains in the flocks participating in the Nucleus of Participatory Breeding of Morada Nova Sheep. MenosAbstract: The objective of the present study was to estimate genetic parameters for growth and reproductive traits of Morada Nova sheep reared by smallholder farmers in the semi-arid northeastern region of Brazil. Data from 11 participating flocks, between 2007 and 2011, were used for the estimation of (co)variance components and genetic parameters for birth weight (BW), weight at weaning adjusted for 112 days of age (WW), average daily weight gain from birth to weaning (ADG), days to lambing (DL), lambing interval (LI), total litter weight at birth (LWB), total litter weight at weaning (LWW) and the ratio between total litter weight at birth and weaning and metabolic weight of the dam (LWB/MW and LWW/MW, respectively). The direct heritabilities obtained by one-trait analysis were 0.19, 0.14, 0.11, 0.13, 0.0, 0.44, 0.19, 0.41, 0.15, respectively for BW, WW, ADG, DL, LI, LWB, LWW, LWB/MW and LWW/MW. The direct heritabilities for BW and WW obtained by two-trait analysis were similar to those estimated by one-trait analysis. However, the direct heritabilities for LWB, LWW and LWW/MW obtained by two-trait analysis were higher than those estimated by one-trait analysis. The genetic correlation between BW and WW were 0.75 and between LWB, LWW and LWW/MW were 0.8, 0.9 and 1.0, respectively. In conclusion, except for LI, there is genetic variability that can be explored by direct and indirect selection to obtain genetic gains in the flocks participating in the Nucleus of Participato... Mostrar Tudo |
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Palavras-Chave: |
Correlação genética; Genetic parameters; Herdabilidade; Raça Morada Nova; Smallholders. |
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Thesagro: |
Genética animal; Ovino; Parâmetro genético; Pequeno produtor. |
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Thesaurus NAL: |
Genetic correlation; Heritability; Sheep; Small farms. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02466naa a2200313 a 4500
001 1987263
005 2015-06-01
008 2014 bl uuuu u00u1 u #d
100 1 $aSHIOTSUKI, L.
245 $aGenetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil.$h[electronic resource]
260 $c2014
520 $aAbstract: The objective of the present study was to estimate genetic parameters for growth and reproductive traits of Morada Nova sheep reared by smallholder farmers in the semi-arid northeastern region of Brazil. Data from 11 participating flocks, between 2007 and 2011, were used for the estimation of (co)variance components and genetic parameters for birth weight (BW), weight at weaning adjusted for 112 days of age (WW), average daily weight gain from birth to weaning (ADG), days to lambing (DL), lambing interval (LI), total litter weight at birth (LWB), total litter weight at weaning (LWW) and the ratio between total litter weight at birth and weaning and metabolic weight of the dam (LWB/MW and LWW/MW, respectively). The direct heritabilities obtained by one-trait analysis were 0.19, 0.14, 0.11, 0.13, 0.0, 0.44, 0.19, 0.41, 0.15, respectively for BW, WW, ADG, DL, LI, LWB, LWW, LWB/MW and LWW/MW. The direct heritabilities for BW and WW obtained by two-trait analysis were similar to those estimated by one-trait analysis. However, the direct heritabilities for LWB, LWW and LWW/MW obtained by two-trait analysis were higher than those estimated by one-trait analysis. The genetic correlation between BW and WW were 0.75 and between LWB, LWW and LWW/MW were 0.8, 0.9 and 1.0, respectively. In conclusion, except for LI, there is genetic variability that can be explored by direct and indirect selection to obtain genetic gains in the flocks participating in the Nucleus of Participatory Breeding of Morada Nova Sheep.
650 $aGenetic correlation
650 $aHeritability
650 $aSheep
650 $aSmall farms
650 $aGenética animal
650 $aOvino
650 $aParâmetro genético
650 $aPequeno produtor
653 $aCorrelação genética
653 $aGenetic parameters
653 $aHerdabilidade
653 $aRaça Morada Nova
653 $aSmallholders
700 1 $aOLIVEIRA, D. P. de
700 1 $aLOBO, R. N. B.
700 1 $aFACO, O.
773 $tSmall Ruminant Research, Amsterdam$gv. 120, n. 2/3, p. 204-208, Aug. 2014.
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