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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/07/1999 |
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Data da última atualização: |
24/06/2025 |
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Autoria: |
MANDONNET, N.; AUMONT, G.; FLEURY, J.; GRUNER, L.; BOUIX, J.; VU TIEN KHANG, J. |
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Título: |
Genetic variability in resistance of Creole goats to natural infection with trichostrongylids in Guadeloupe. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Annals of the New York Academy of Sciences, v. 791, n. 1, p. 421-431, Jul. 1996. |
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DOI: |
10.1111/j.1749-6632.1996.tb53549.x. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The objective of this study was to show the existence of genetic variability in resistance of Creole goats to natural infection with intestinal nematodes. Four successive cohorts of male and female kids were reared from weaning during 9 months in intensive pangola pastures (stocking rate 1.4 t/ha, regrowth of 21 days, 300 kg N/ ha/year of fertilization). All cohorts considered, 203 offsprings from 13 bucks and 149 goats were used in the experiment. Animals were treated with an oral dose of ivermectin every seven weeks, from 3 to 11 months of age. They were sampled for fecal egg counts (FEC) and packed cell volume (PCV), 6 weeks after drenching, when 6 and 10 months old. Haemonchus contortus and Trichostrongylus colubriformis were the predominant species. Data of one cohort when 6 months of age and another one when 10 months old were not included in calculations because a self-cure occurred during a rainy season. Estimated means of FEC after square-root transformation were 1054 and 711 respectively for 6-month-old and 10-month-old kids. Phenotypic correlations between FEC and PCV were -0.46 (p < 0.001) and -0.29 (p < 0.01) when 6 and 10 months old, respectively. FEC repeatabilities estimated as variance ratio were 0.47 and 0.06 for within-age measures (data recorded at one week interval) and between age measures (6 vs. 10 months) respectively. No sire effect was significant for PCV. Sire effect on FEC was more significant when 6 months old (p < 0.03) than when 10 months old (p < 0.15). Further studies are now being carried out to confirm this genetic determinism of resistance to natural infection with strongyles in Creole goats. MenosAbstract: The objective of this study was to show the existence of genetic variability in resistance of Creole goats to natural infection with intestinal nematodes. Four successive cohorts of male and female kids were reared from weaning during 9 months in intensive pangola pastures (stocking rate 1.4 t/ha, regrowth of 21 days, 300 kg N/ ha/year of fertilization). All cohorts considered, 203 offsprings from 13 bucks and 149 goats were used in the experiment. Animals were treated with an oral dose of ivermectin every seven weeks, from 3 to 11 months of age. They were sampled for fecal egg counts (FEC) and packed cell volume (PCV), 6 weeks after drenching, when 6 and 10 months old. Haemonchus contortus and Trichostrongylus colubriformis were the predominant species. Data of one cohort when 6 months of age and another one when 10 months old were not included in calculations because a self-cure occurred during a rainy season. Estimated means of FEC after square-root transformation were 1054 and 711 respectively for 6-month-old and 10-month-old kids. Phenotypic correlations between FEC and PCV were -0.46 (p < 0.001) and -0.29 (p < 0.01) when 6 and 10 months old, respectively. FEC repeatabilities estimated as variance ratio were 0.47 and 0.06 for within-age measures (data recorded at one week interval) and between age measures (6 vs. 10 months) respectively. No sire effect was significant for PCV. Sire effect on FEC was more significant when 6 months old (p < 0.03) than when 10 mo... Mostrar Tudo |
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Palavras-Chave: |
Controle; Nematodeo gastrintestinal; Parasite Egg Count; Sex Characteristics; Trichostrongyloidea; Trichostrongyloidiasis. |
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Thesagro: |
Caprino; Helminto; Resistência Genética. |
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Thesaurus Nal: |
French West Indies; Genetic resistance; Goat diseases; Goats; Helminthiasis; Helminths; Phenotype; Seasons; Weight gain. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02863naa a2200409 a 4500
001 1524007
005 2025-06-24
008 1996 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1749-6632.1996.tb53549.x.$2DOI
100 1 $aMANDONNET, N.
245 $aGenetic variability in resistance of Creole goats to natural infection with trichostrongylids in Guadeloupe.$h[electronic resource]
260 $c1996
520 $aAbstract: The objective of this study was to show the existence of genetic variability in resistance of Creole goats to natural infection with intestinal nematodes. Four successive cohorts of male and female kids were reared from weaning during 9 months in intensive pangola pastures (stocking rate 1.4 t/ha, regrowth of 21 days, 300 kg N/ ha/year of fertilization). All cohorts considered, 203 offsprings from 13 bucks and 149 goats were used in the experiment. Animals were treated with an oral dose of ivermectin every seven weeks, from 3 to 11 months of age. They were sampled for fecal egg counts (FEC) and packed cell volume (PCV), 6 weeks after drenching, when 6 and 10 months old. Haemonchus contortus and Trichostrongylus colubriformis were the predominant species. Data of one cohort when 6 months of age and another one when 10 months old were not included in calculations because a self-cure occurred during a rainy season. Estimated means of FEC after square-root transformation were 1054 and 711 respectively for 6-month-old and 10-month-old kids. Phenotypic correlations between FEC and PCV were -0.46 (p < 0.001) and -0.29 (p < 0.01) when 6 and 10 months old, respectively. FEC repeatabilities estimated as variance ratio were 0.47 and 0.06 for within-age measures (data recorded at one week interval) and between age measures (6 vs. 10 months) respectively. No sire effect was significant for PCV. Sire effect on FEC was more significant when 6 months old (p < 0.03) than when 10 months old (p < 0.15). Further studies are now being carried out to confirm this genetic determinism of resistance to natural infection with strongyles in Creole goats.
650 $aFrench West Indies
650 $aGenetic resistance
650 $aGoat diseases
650 $aGoats
650 $aHelminthiasis
650 $aHelminths
650 $aPhenotype
650 $aSeasons
650 $aWeight gain
650 $aCaprino
650 $aHelminto
650 $aResistência Genética
653 $aControle
653 $aNematodeo gastrintestinal
653 $aParasite Egg Count
653 $aSex Characteristics
653 $aTrichostrongyloidea
653 $aTrichostrongyloidiasis
700 1 $aAUMONT, G.
700 1 $aFLEURY, J.
700 1 $aGRUNER, L.
700 1 $aBOUIX, J.
700 1 $aVU TIEN KHANG, J.
773 $tAnnals of the New York Academy of Sciences$gv. 791, n. 1, p. 421-431, Jul. 1996.
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