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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sul; Embrapa Pesca e Aquicultura. |
Data corrente: |
18/08/2016 |
Data da última atualização: |
22/08/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BENAVIDES, M. V.; SOUZA, C. J. H. de; MORAES, J. C. F.; BERNE, M. E. A. |
Afiliação: |
MAGDA VIEIRA BENAVIDES, CNPASA; CARLOS JOSE HOFF DE SOUZA, CNPASA; JOSE CARLOS FERRUGEM MORAES, CPPSUL; MARIA ELISABETH AIRES BERNE, UNIVERSIDADE FEDERAL DE PELOTAS. |
Título: |
Is it feasible to select humid sub-tropical Merino sheep for faecal egg counts? |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Small Ruminant Research, Amsterdam, v. 137, p. 73-80, Apr. 2016. |
ISSN: |
0921-4488 |
DOI: |
10.1016/j.smallrumres.2016.03.006 |
Idioma: |
Inglês |
Conteúdo: |
Genetic parameter estimates for faecal egg counts (FEC), weaning and shearing weights and wool traits were evaluated in 720 Australian Merino lambs raised in Southern Brazil. Weaned lambs were naturally exposed to nematode larvae-contaminated pastures with the objective of recording individual gastrointestinal parasite infection responses. Phenotypic and genetic correlations among production traits such as birth, weaning and shearing weights and wool production traits (greasy and clean fleece weights, scouring yield, mean fibre diameter, and staple length) were estimated. Results showed a high variability for FEC counts among individuals, with a heritability estimate of 0.365 ± 0.001, and low phenotypic and genetic correlations between FEC and all productive traits, except for a negative shearing live weight (rG = −0.305 ± 0.002 and rP = −0.140 ± 0.001). These results indicate that selection for low FEC would ensure genetic progress in reducing gastrointestinal parasite infection levels without limiting major sheep production traits for Merino sheep raised in a humid sub-tropical environment. |
Palavras-Chave: |
Gastrointestinal parasite infection; Host resistance; Sheep production traits; Sheep selection. |
Thesagro: |
Ovelha. |
Thesaurus Nal: |
Digestive system diseases; Fecal egg count; Genetic covariance; Sheep; Tropical pastures. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02042naa a2200301 a 4500 001 2051254 005 2016-08-22 008 2016 bl uuuu u00u1 u #d 022 $a0921-4488 024 7 $a10.1016/j.smallrumres.2016.03.006$2DOI 100 1 $aBENAVIDES, M. V. 245 $aIs it feasible to select humid sub-tropical Merino sheep for faecal egg counts?$h[electronic resource] 260 $c2016 520 $aGenetic parameter estimates for faecal egg counts (FEC), weaning and shearing weights and wool traits were evaluated in 720 Australian Merino lambs raised in Southern Brazil. Weaned lambs were naturally exposed to nematode larvae-contaminated pastures with the objective of recording individual gastrointestinal parasite infection responses. Phenotypic and genetic correlations among production traits such as birth, weaning and shearing weights and wool production traits (greasy and clean fleece weights, scouring yield, mean fibre diameter, and staple length) were estimated. Results showed a high variability for FEC counts among individuals, with a heritability estimate of 0.365 ± 0.001, and low phenotypic and genetic correlations between FEC and all productive traits, except for a negative shearing live weight (rG = −0.305 ± 0.002 and rP = −0.140 ± 0.001). These results indicate that selection for low FEC would ensure genetic progress in reducing gastrointestinal parasite infection levels without limiting major sheep production traits for Merino sheep raised in a humid sub-tropical environment. 650 $aDigestive system diseases 650 $aFecal egg count 650 $aGenetic covariance 650 $aSheep 650 $aTropical pastures 650 $aOvelha 653 $aGastrointestinal parasite infection 653 $aHost resistance 653 $aSheep production traits 653 $aSheep selection 700 1 $aSOUZA, C. J. H. de 700 1 $aMORAES, J. C. F. 700 1 $aBERNE, M. E. A. 773 $tSmall Ruminant Research, Amsterdam$gv. 137, p. 73-80, Apr. 2016.
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Embrapa Pesca e Aquicultura (CNPASA) |
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4. | | BERNE, M. E. A.; JOHNSON, E. H.; SANTA ROSA, J. Detection of class specific goat antibodies to Haemonchus contortus by Dig Elisa. In: INTERNATIONAL CONFERENCE ON GOATS, 4., 1987, Brasília, DF. Proceedings... Brasília, DF: EMBRAPA-DDT, 1987. v. 2, p. 1359-1360. Resumo 82.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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7. | | VIEIRA, L. da S.; GONCALVES, P. C.; COSTA, C. A. F.; BERNE, M. E. A. Atividade ovicida "in vitro" dos benzimidazóis: oxfendazole, fenbendazole, albendazole e thiabendazole em nematódeos gastrintestinais de caprinos. In: SEMINÁRIO DO COLÉGIO BRASILEIRO DE PARASITOLOGIA VETERINÁRIA, 5., 1987, Belo Horizonte. Resumos... Belo Horizonte: Colégio Brasileiro de Parasitologia Veterinária, 1987. p. 17.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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8. | | VIEIRA, L. da S.; GONÇALVES, P. C.; COSTA, C. A. F.; BERNE, M. E. A. Atividade in Vitro dos Benzimidazóis: Oxfendazole, Fenbendazole, Albendazole e Thiabendazole em Nematódeos Gastrintestinais de Caprinos. Pesquisa Agropecuária Brasileira, Brasília, v.24, n.10, p. 1201-1209, out. 1989Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Unidades Centrais. |
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15. | | COSTA, C. A. F.; VIEIRA, L. da S.; BERNE, M. E. A. Population dynamics of caprine parasitic helminths in the sertao of Inhamus, Ceara; Brazil. In: INTERNATIONAL CONFERENCE ON GOATS, 4., 1987, Brasília, DF. Proceedings... Brasília, DF: EMBRAPA-DDT, 1987. v. 2, p. 1360. Ref. 83.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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Registros recuperados : 70 | |
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