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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: |
23/04/2009 |
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Data da última atualização: |
06/07/2023 |
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Autoria: |
BURKE, J. M.; MILLER, J. E. |
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Título: |
Use of FAMACHA system to evaluate gastrointestinal nematode resistance/resilience in offspring of stud rams. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Veterinary Parasitology, v. 153, n. 1/2, p. 85-92, May, 2008. |
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DOI: |
doi:10.1016/j.vetpar.2008.01.029 |
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Idioma: |
Inglês |
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Conteúdo: |
High levels of anthelmintic resistance in gastrointestinal nematodes (GIN) of small ruminants have created the need for animals with greater resistance to these parasites. The objective of this experiment was to evaluate the effectiveness of the FAMACHA system in identification of parasite resilient/resistant offspring, and thus identification of stud rams with greater resilience/resistance. Katahdin ewes bred in separate groups to two sires to lamb in spring (2004, 2005: Ram A and Ram B; 2006, 2007: Ram C and Ram D) at the USDA, Agricultural Research Station in Booneville, Arkansas produced 20?40 offspring/sire each year. Ewes and lambs grazed mixed grass (predominantly bermudagrass and ryegrass) pastures and were supplemented with corn/soybean meal between 30 days pre- and 60 days post-lambing (ewes) and starting 45 days of age until weaning (lambs; 95.0 ± 0.6 days of age). Blood samples and feces were collected from the lambs to determine blood packed cell volume (PCV) and fecal egg counts (FEC) and FAMACHA scores were determined at 90, 120, and 150 days of age. Lambs were dewormed if anemic (PCV < 19% or FAMACHA score >2) and data removed within 30 days after deworming. Data were analyzed for the 2004/2005 and 2006/2007 groups using general linear models with year, sex of lamb, and sire nested within year as variables. Sire differences were detected (P < 0.05 or less) for PCV and FAMACHA at all time points, but not FEC. There tended (P < 0.10) to be sire differences for FEC at 90 and 120 days of age, but not at 150 days of age. Lambs sired by Ram D were dewormed less by 150 days of age than those sired by Ram C. The FAMACHA system can be used to identify superior sires for parasite resilience/resistance, thus increasing flock resilience, and perhaps resistance. MenosHigh levels of anthelmintic resistance in gastrointestinal nematodes (GIN) of small ruminants have created the need for animals with greater resistance to these parasites. The objective of this experiment was to evaluate the effectiveness of the FAMACHA system in identification of parasite resilient/resistant offspring, and thus identification of stud rams with greater resilience/resistance. Katahdin ewes bred in separate groups to two sires to lamb in spring (2004, 2005: Ram A and Ram B; 2006, 2007: Ram C and Ram D) at the USDA, Agricultural Research Station in Booneville, Arkansas produced 20?40 offspring/sire each year. Ewes and lambs grazed mixed grass (predominantly bermudagrass and ryegrass) pastures and were supplemented with corn/soybean meal between 30 days pre- and 60 days post-lambing (ewes) and starting 45 days of age until weaning (lambs; 95.0 ± 0.6 days of age). Blood samples and feces were collected from the lambs to determine blood packed cell volume (PCV) and fecal egg counts (FEC) and FAMACHA scores were determined at 90, 120, and 150 days of age. Lambs were dewormed if anemic (PCV < 19% or FAMACHA score >2) and data removed within 30 days after deworming. Data were analyzed for the 2004/2005 and 2006/2007 groups using general linear models with year, sex of lamb, and sire nested within year as variables. Sire differences were detected (P < 0.05 or less) for PCV and FAMACHA at all time points, but not FEC. There tended (P < 0.10) to be sire differences for ... Mostrar Tudo |
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Palavras-Chave: |
FAMACHA; Gastrointestinal Diseases; Gastrointestinal nematode management; Katahdin; Nematódeo gastrintestinal; Predictive Value of Tests. |
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Thesagro: |
Haemonchus Contortus; Ovino. |
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Thesaurus Nal: |
Anthelmintics; Brazil; Gastrointestinal nematodes; Lambs; Pharmacology; Sheep diseases. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02769naa a2200313 a 4500
001 1534143
005 2023-07-06
008 2008 bl uuuu u00u1 u #d
024 7 $adoi:10.1016/j.vetpar.2008.01.029$2DOI
100 1 $aBURKE, J. M.
245 $aUse of FAMACHA system to evaluate gastrointestinal nematode resistance/resilience in offspring of stud rams.$h[electronic resource]
260 $c2008
520 $aHigh levels of anthelmintic resistance in gastrointestinal nematodes (GIN) of small ruminants have created the need for animals with greater resistance to these parasites. The objective of this experiment was to evaluate the effectiveness of the FAMACHA system in identification of parasite resilient/resistant offspring, and thus identification of stud rams with greater resilience/resistance. Katahdin ewes bred in separate groups to two sires to lamb in spring (2004, 2005: Ram A and Ram B; 2006, 2007: Ram C and Ram D) at the USDA, Agricultural Research Station in Booneville, Arkansas produced 20?40 offspring/sire each year. Ewes and lambs grazed mixed grass (predominantly bermudagrass and ryegrass) pastures and were supplemented with corn/soybean meal between 30 days pre- and 60 days post-lambing (ewes) and starting 45 days of age until weaning (lambs; 95.0 ± 0.6 days of age). Blood samples and feces were collected from the lambs to determine blood packed cell volume (PCV) and fecal egg counts (FEC) and FAMACHA scores were determined at 90, 120, and 150 days of age. Lambs were dewormed if anemic (PCV < 19% or FAMACHA score >2) and data removed within 30 days after deworming. Data were analyzed for the 2004/2005 and 2006/2007 groups using general linear models with year, sex of lamb, and sire nested within year as variables. Sire differences were detected (P < 0.05 or less) for PCV and FAMACHA at all time points, but not FEC. There tended (P < 0.10) to be sire differences for FEC at 90 and 120 days of age, but not at 150 days of age. Lambs sired by Ram D were dewormed less by 150 days of age than those sired by Ram C. The FAMACHA system can be used to identify superior sires for parasite resilience/resistance, thus increasing flock resilience, and perhaps resistance.
650 $aAnthelmintics
650 $aBrazil
650 $aGastrointestinal nematodes
650 $aLambs
650 $aPharmacology
650 $aSheep diseases
650 $aHaemonchus Contortus
650 $aOvino
653 $aFAMACHA
653 $aGastrointestinal Diseases
653 $aGastrointestinal nematode management
653 $aKatahdin
653 $aNematódeo gastrintestinal
653 $aPredictive Value of Tests
700 1 $aMILLER, J. E.
773 $tVeterinary Parasitology$gv. 153, n. 1/2, p. 85-92, May, 2008.
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| 1. |  | MCCOUCH, S.; BAUTE, G. J.; BRADEEN, J.; BRAMEL, P.; BRETTING, P. K.; BUCKLER, E.; BURKE, J. M.; CHAREST, D.; CLOUTIER, S.; COLE, G.; DEMPEWOLF, H.; DINGKUHN, M.; FEUILLET, C.; GEPTS, P.; GRATTAPAGLIA, D.; GUARINO, L.; JACKSON, S.; KNAPP, S.; LANGRIDGE, P.; LAWTON-RAUH, A.; LIJUA, Q.; LUSTY, C.; MICHAEL, T.; MYLES, S.; NAITO, K.; NELSON, R. L.; PONTAROLLO, R.; RICHARDS, C. M.; RIESEBERG, L.; ROSS-IBARRA , J.; ROUNSLEY, S.; HAMILTON, R. S.; SCHURR, U.; STEIN, N.; TOMOOKA, N.; KNAAP, E. van der; TASSEL, d. van; TOLL, J.; VALLS, J. F. M.; VARSHNEY, R. K.; WARD, J.; WAUGH, R.; WENZL, P.; ZAMIR, D. Feeding the future: we must mine the biodiversity in seed banks to help to overcome food shortages, urge Susan McCouch and colleagues. Nature, v. 499, p. 23-24, 2013.| Tipo: Nota Técnica/Nota Científica |
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