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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
04/05/2023 |
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Autoria: |
WINDON, R. G.; DINEEN, J. K. |
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Título: |
The effect of selection of both sire and dam on the response of F1 generation lambs to vaccination with irradiated Trichostrongylus colubriformis larvae. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
International Journal Parasitology, v. 11, n. 1, p. 11-18, 1981. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Windon R. G. and Dineen J. K. (1981). The effect of selection of both sire and dam on the response of F1 generation lambs to vaccination with irradiated Trichostrongylus colubriformis larvae. International Journal for Parasitology11: 11?18. Rams and ewes, tested for responsiveness to vaccination with irradiated T. colubriformis larvae at an early age, were mated on the basis of responder × responder and non-responder × non-responder. Progeny were vaccinated at 8 and 12 weeks of age with 20,000 irradiated larvae, treated with anthelmintic at 16 weeks and challenged with 20,000 normal larvae at 17 weeks. Faecal egg counts of progeny from responder matings were significantly lower than progeny from non-responders, and within each mating type, ewe lambs had markedly lower egg counts than ram lambs. The level of circulating complement-fixing antibodies to T. colubriformis larval extract were inversely related to egg counts. Thus, ewe progeny from responder matings had the highest serum antibody levels, non-responder ram progeny had the lowest levels and responder rams and non-responder ewes had similar intermediate levels. In vitro responses of cells stimulated with T. colubriformis L3 antigen were greater in progeny from responder matings, whereas responses to bacterial lipopolysaccharide were higher in progeny from non-responder matings. The results confirm that the response to vaccination at an early age is genetically determined, and show that the response of progeny is most vigorously expressed when both sires and dams have been selected. MenosAbstract: Windon R. G. and Dineen J. K. (1981). The effect of selection of both sire and dam on the response of F1 generation lambs to vaccination with irradiated Trichostrongylus colubriformis larvae. International Journal for Parasitology11: 11?18. Rams and ewes, tested for responsiveness to vaccination with irradiated T. colubriformis larvae at an early age, were mated on the basis of responder × responder and non-responder × non-responder. Progeny were vaccinated at 8 and 12 weeks of age with 20,000 irradiated larvae, treated with anthelmintic at 16 weeks and challenged with 20,000 normal larvae at 17 weeks. Faecal egg counts of progeny from responder matings were significantly lower than progeny from non-responders, and within each mating type, ewe lambs had markedly lower egg counts than ram lambs. The level of circulating complement-fixing antibodies to T. colubriformis larval extract were inversely related to egg counts. Thus, ewe progeny from responder matings had the highest serum antibody levels, non-responder ram progeny had the lowest levels and responder rams and non-responder ewes had similar intermediate levels. In vitro responses of cells stimulated with T. colubriformis L3 antigen were greater in progeny from responder matings, whereas responses to bacterial lipopolysaccharide were higher in progeny from non-responder matings. The results confirm that the response to vaccination at an early age is genetically determined, and show that the response of progen... Mostrar Tudo |
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Palavras-Chave: |
In vitro lymphocyte stimulation; Nematodeo; Non-responder progeny; Radiation effects; Responder progeny; Selection genetic; Time factors; Trichostrongyloidea; Trichostrongylosis. |
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Thesagro: |
Imunologia; Ovino; Parasitologia. |
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Thesaurus Nal: |
Immunology; Lambs; Nematoda; Sheep; Trichostrongylus colubriformis; Vaccination. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02634naa a2200349 a 4500
001 1522968
005 2023-05-04
008 1981 bl uuuu u00u1 u #d
100 1 $aWINDON, R. G.
245 $aThe effect of selection of both sire and dam on the response of F1 generation lambs to vaccination with irradiated Trichostrongylus colubriformis larvae.$h[electronic resource]
260 $c1981
520 $aAbstract: Windon R. G. and Dineen J. K. (1981). The effect of selection of both sire and dam on the response of F1 generation lambs to vaccination with irradiated Trichostrongylus colubriformis larvae. International Journal for Parasitology11: 11?18. Rams and ewes, tested for responsiveness to vaccination with irradiated T. colubriformis larvae at an early age, were mated on the basis of responder × responder and non-responder × non-responder. Progeny were vaccinated at 8 and 12 weeks of age with 20,000 irradiated larvae, treated with anthelmintic at 16 weeks and challenged with 20,000 normal larvae at 17 weeks. Faecal egg counts of progeny from responder matings were significantly lower than progeny from non-responders, and within each mating type, ewe lambs had markedly lower egg counts than ram lambs. The level of circulating complement-fixing antibodies to T. colubriformis larval extract were inversely related to egg counts. Thus, ewe progeny from responder matings had the highest serum antibody levels, non-responder ram progeny had the lowest levels and responder rams and non-responder ewes had similar intermediate levels. In vitro responses of cells stimulated with T. colubriformis L3 antigen were greater in progeny from responder matings, whereas responses to bacterial lipopolysaccharide were higher in progeny from non-responder matings. The results confirm that the response to vaccination at an early age is genetically determined, and show that the response of progeny is most vigorously expressed when both sires and dams have been selected.
650 $aImmunology
650 $aLambs
650 $aNematoda
650 $aSheep
650 $aTrichostrongylus colubriformis
650 $aVaccination
650 $aImunologia
650 $aOvino
650 $aParasitologia
653 $aIn vitro lymphocyte stimulation
653 $aNematodeo
653 $aNon-responder progeny
653 $aRadiation effects
653 $aResponder progeny
653 $aSelection genetic
653 $aTime factors
653 $aTrichostrongyloidea
653 $aTrichostrongylosis
700 1 $aDINEEN, J. K.
773 $tInternational Journal Parasitology$gv. 11, n. 1, p. 11-18, 1981.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 4 | |
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