|
|
Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
05/04/2005 |
Data da última atualização: |
05/04/2005 |
Autoria: |
BAKER, R. L.; AUDHO, J. O.; ADUDA, E. O.; THORPE, W. |
Título: |
Genetic resistance to gastro-intestinal nematode parasites in Galla and Small East African goats in the sub-humid tropics. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
Animal Science, v. 73, pt 1, p. 61-70, 2001. |
Idioma: |
Inglês |
Conteúdo: |
A study was carried out from 1992 to 1996 to compare lhe resistance to naturally acquired gastro-intestinal (Gl) nematode parasite infections (predominantly Haemonchus contortus) of GalIa and SmalI East African goats in lhe sub-humid coastal region of Kenya. A total of 204 GalIa and 349 SmalI East African (SEA) kids were born from five kiddings. These were lhe progeny of 18 GalIa and 17 SEA bucks. Live weights (LWT), blood packed-celI volume (PCV) and faecal egg count (FEC) were recorded at 1- to 2-month intervals from birth to about 14 months of age. The SEA kids were more resistant to GI nematode parasites than GalIa kids as shown by their significantly lower FEC (P < 0.001) in lhe post-weaning period (8- to 14-month-old kids) and lower mortality from birth to 14 months : of age (P < 0.05). There was no significant (P > 0.05) breed effect on PCV; but GalIa kids were significantly heavier (P < 0.001) at alI measurement times between birth and 14 months of age. Heritability estimates for LWT, pcv and FEC at lhe different sampling times were characterized by high standard errors. Heritability estimates for records taken at 4.5 and 8 months of age from a repeated measures analysis were 0.18 (s.e. 0.08) for pcv and 0.13 (s.e.0.07) for logarithm-transformed FEC. The phenotypic and genetic correlation estimates between pcv and LFEC were moderately to highly nega tive and averaged -0.36 and -0.53, respectively. The results are discussed in relation to the limited evidence for resistance to GI nematode infections in goats and compared with lhe much stronger evidence for resistance in sheep. MenosA study was carried out from 1992 to 1996 to compare lhe resistance to naturally acquired gastro-intestinal (Gl) nematode parasite infections (predominantly Haemonchus contortus) of GalIa and SmalI East African goats in lhe sub-humid coastal region of Kenya. A total of 204 GalIa and 349 SmalI East African (SEA) kids were born from five kiddings. These were lhe progeny of 18 GalIa and 17 SEA bucks. Live weights (LWT), blood packed-celI volume (PCV) and faecal egg count (FEC) were recorded at 1- to 2-month intervals from birth to about 14 months of age. The SEA kids were more resistant to GI nematode parasites than GalIa kids as shown by their significantly lower FEC (P < 0.001) in lhe post-weaning period (8- to 14-month-old kids) and lower mortality from birth to 14 months : of age (P < 0.05). There was no significant (P > 0.05) breed effect on PCV; but GalIa kids were significantly heavier (P < 0.001) at alI measurement times between birth and 14 months of age. Heritability estimates for LWT, pcv and FEC at lhe different sampling times were characterized by high standard errors. Heritability estimates for records taken at 4.5 and 8 months of age from a repeated measures analysis were 0.18 (s.e. 0.08) for pcv and 0.13 (s.e.0.07) for logarithm-transformed FEC. The phenotypic and genetic correlation estimates between pcv and LFEC were moderately to highly nega tive and averaged -0.36 and -0.53, respectively. The results are discussed in relation to the limited evidence for resi... Mostrar Tudo |
Palavras-Chave: |
Melhoramento genético; Nematóide gastrintestinal; Região tropical. |
Thesagro: |
Caprino; Genética Animal; Haemonchus Contortus; Resistência Genética. |
Thesaurus Nal: |
Africa. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02363naa a2200253 a 4500 001 1531060 005 2005-04-05 008 2001 bl uuuu u00u1 u #d 100 1 $aBAKER, R. L. 245 $aGenetic resistance to gastro-intestinal nematode parasites in Galla and Small East African goats in the sub-humid tropics. 260 $c2001 520 $aA study was carried out from 1992 to 1996 to compare lhe resistance to naturally acquired gastro-intestinal (Gl) nematode parasite infections (predominantly Haemonchus contortus) of GalIa and SmalI East African goats in lhe sub-humid coastal region of Kenya. A total of 204 GalIa and 349 SmalI East African (SEA) kids were born from five kiddings. These were lhe progeny of 18 GalIa and 17 SEA bucks. Live weights (LWT), blood packed-celI volume (PCV) and faecal egg count (FEC) were recorded at 1- to 2-month intervals from birth to about 14 months of age. The SEA kids were more resistant to GI nematode parasites than GalIa kids as shown by their significantly lower FEC (P < 0.001) in lhe post-weaning period (8- to 14-month-old kids) and lower mortality from birth to 14 months : of age (P < 0.05). There was no significant (P > 0.05) breed effect on PCV; but GalIa kids were significantly heavier (P < 0.001) at alI measurement times between birth and 14 months of age. Heritability estimates for LWT, pcv and FEC at lhe different sampling times were characterized by high standard errors. Heritability estimates for records taken at 4.5 and 8 months of age from a repeated measures analysis were 0.18 (s.e. 0.08) for pcv and 0.13 (s.e.0.07) for logarithm-transformed FEC. The phenotypic and genetic correlation estimates between pcv and LFEC were moderately to highly nega tive and averaged -0.36 and -0.53, respectively. The results are discussed in relation to the limited evidence for resistance to GI nematode infections in goats and compared with lhe much stronger evidence for resistance in sheep. 650 $aAfrica 650 $aCaprino 650 $aGenética Animal 650 $aHaemonchus Contortus 650 $aResistência Genética 653 $aMelhoramento genético 653 $aNematóide gastrintestinal 653 $aRegião tropical 700 1 $aAUDHO, J. O. 700 1 $aADUDA, E. O. 700 1 $aTHORPE, W. 773 $tAnimal Science$gv. 73, pt 1, p. 61-70, 2001.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 4 | |
2. | | GONÇALVES, I. G. de; ECHEVARRIA, F. A. M.; FERNANDEZ MUÑOZ, F. Uso do cobre no controle da verminose gastrintestinal em ovinos. In: CONGRESSO BRASILEIRO DE PARASITOLOGIA VETERINÁRIA, 12.; SEMINÁRIO DE PARASITOSES NA CLÍNICA DE PEQUENOS ANIMAIS, 1.; SEMINÁRIO DE COCCÍDIOS E COCCIDIOSES, 1; SEMINÁRIO DE MANEJO INTEGRADO DA RESISTÊNCIA, 1.; CURSO DE GEOPROCESSAMENTO E SEU USO EM ESTUDOS EPIDEMIOLÓGICOS, 2002, Rio de Janeiro. Anais... Rio de Janeiro: UFRRJ: Colégio Brasileiro de Parasitologia Veterinária, 2002. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
| |
3. | | BRICARELLO, P. A.; GENNARI, S. M.; OLIVEIRA-SEQUEIRA, T. C. G.; VAZ, C. M. S. L.; GONÇALVES, I. G. de; ECHEVARRIA, F. A. M. Response of Corriedale and Crioula Lanada sheep to artificial primary infection with Haemonchus contortus. Veterinary Research Communications, v. 26, n. 6, p. 447-457, Aug. 2002.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Pecuária Sul. |
| |
4. | | BRICARELLO, P. A.; GENNARI, S. M.; OLIVEIRA-SEQUEIRA, T. C. G.; VAZ, C. M. S. L.; GONÇALVES, I. G. de; ECHEVARRIA, F. A. M. Worm burden and immunological responses in Corriedale and Crioula Lanada sheep following natural infection with Haemonchus contortus. Small Ruminant Research, v. 51, n. 1, p. 75-83, Jan. 2004.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
Biblioteca(s): Embrapa Pecuária Sul. |
| |
Registros recuperados : 4 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|