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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
31/05/2016 |
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Data da última atualização: |
29/12/2017 |
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Autoria: |
PUPIN, R. C.; MELO, G. K. A.; HECKLER, R. F.; FACCIN, T. C.; ÍTAVO, C. C. B. F.; FERNANDES, C. E.; GOMES, D. C.; LEMOS, R. A. A. |
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Afiliação: |
RAYANE C. PUPIN, UFMS; GLEICE K. A. MELO, UFMS; RUBIANE F. HECKLER, UFMS; TATIANE C. FACCIN, UFSM; CAMILA, C. B. F. ÍTAVO, FAMEZ/UFMS; CARLOS E. FERNANDES, UFSM; DANILO C. GOMES, FAMEZ/UFMS; RICARDO A. A. LEMOS, FAMEZ/UFMS. |
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Título: |
Identification of lamb flocks susceptible and resistant against Brachiaria poisoning. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 5, p. 383-388, maio. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
This study was designed to assess the influence of genetic resistance against brachiaria poisoning in sheep. Two groups of sheep, one identified as susceptible (formed by two ewes and one ram) and the other as resistant against brachiaria poisoning (formed by three ewes and one ram) were selected. Sheep considered susceptible were those that presented clinical signs of brachiaria poisoning at any time of their life; resistant sheep were those that even raised on Brachiaria spp. pastures, did not developed any sign of the poisoning during their life. The offspring of the two flocks (15 lambs from the sensitive flock and 9 lambs from the resistant flock) were placed into brachiaria pasture (initially Brachiaria decumbens and B. brizantha,and only B. decumbens after weaning) and followed up during two years (2013-2014). The determination of protodioscin levels in B. decumbens pasture was performed only in 2014 and revealed significant amounts of the toxic principle. Eleven lambs of the susceptible group were affected to some degree of brachiaria poisoning and six died; no lamb of the resistant group was affected. Clinical signs consisted of varying degrees of subcutaneous edema of the face and, erythema and loss of hair of the ears, crusts on the skin of ears, around the eyes and on planum nasale, scar deformation of the ears, and bilateral ocular discharge; affected lambs also sought for shadowy shelters and they were poor doers. Several sheep recovered from the condition and then relapsed. Necropsy findings in six lambs included pale mucous membranes, emaciation, dermatitis, scar deformation of the ears, large yellow livers with marked lobular pattern, and moderate infestation by Haemonchus contortus. Histologically the liver lesions were similar in all necropsied lambs but with varying degrees of severity; they were consistent with brachiaria poisoning and included architectural disruption of hepatocellular trabecula, clusters of foamy macrophages occasionally forming multinucleated giant cells, swollen and vacuolated epatocytes, crystals or negative images of crystals in the biliary system, bilestasis, bile duct proliferation and lymphoplasmacytic infiltrate in portal triads. The skin lesions were those of photodermatitis and included epidermal necrosis, hyperkeratosis and dermal neutrophilic infiltrate. The results of this study allow to conclude that there is a genetic related resistance to brachiaria poisoning in sheep since the progeny of resistant sheep did not manifest the poisoning. The use of resistant flocks in brachiaria pastures is suggested as a valuable option for the prevention of brachiaria poisoning in sheep. MenosThis study was designed to assess the influence of genetic resistance against brachiaria poisoning in sheep. Two groups of sheep, one identified as susceptible (formed by two ewes and one ram) and the other as resistant against brachiaria poisoning (formed by three ewes and one ram) were selected. Sheep considered susceptible were those that presented clinical signs of brachiaria poisoning at any time of their life; resistant sheep were those that even raised on Brachiaria spp. pastures, did not developed any sign of the poisoning during their life. The offspring of the two flocks (15 lambs from the sensitive flock and 9 lambs from the resistant flock) were placed into brachiaria pasture (initially Brachiaria decumbens and B. brizantha,and only B. decumbens after weaning) and followed up during two years (2013-2014). The determination of protodioscin levels in B. decumbens pasture was performed only in 2014 and revealed significant amounts of the toxic principle. Eleven lambs of the susceptible group were affected to some degree of brachiaria poisoning and six died; no lamb of the resistant group was affected. Clinical signs consisted of varying degrees of subcutaneous edema of the face and, erythema and loss of hair of the ears, crusts on the skin of ears, around the eyes and on planum nasale, scar deformation of the ears, and bilateral ocular discharge; affected lambs also sought for shadowy shelters and they were poor doers. Several sheep recovered from the condition and ... Mostrar Tudo |
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Palavras-Chave: |
Brachiaria spp; Diseases of sheep; Intoxicação por planta. |
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Thesagro: |
Doença; Ovino; Planta toxica; Resistência genética; Saponina. |
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Thesaurus Nal: |
Genetic resistance; plant poisoning; Poisonous plants. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/143589/1/Identification-of-lamb-flocks.pdf
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Marc: |
LEADER 03635naa a2200337 a 4500
001 2045951
005 2017-12-29
008 2016 bl uuuu u00u1 u #d
100 1 $aPUPIN, R. C.
245 $aIdentification of lamb flocks susceptible and resistant against Brachiaria poisoning.
260 $c2016
520 $aThis study was designed to assess the influence of genetic resistance against brachiaria poisoning in sheep. Two groups of sheep, one identified as susceptible (formed by two ewes and one ram) and the other as resistant against brachiaria poisoning (formed by three ewes and one ram) were selected. Sheep considered susceptible were those that presented clinical signs of brachiaria poisoning at any time of their life; resistant sheep were those that even raised on Brachiaria spp. pastures, did not developed any sign of the poisoning during their life. The offspring of the two flocks (15 lambs from the sensitive flock and 9 lambs from the resistant flock) were placed into brachiaria pasture (initially Brachiaria decumbens and B. brizantha,and only B. decumbens after weaning) and followed up during two years (2013-2014). The determination of protodioscin levels in B. decumbens pasture was performed only in 2014 and revealed significant amounts of the toxic principle. Eleven lambs of the susceptible group were affected to some degree of brachiaria poisoning and six died; no lamb of the resistant group was affected. Clinical signs consisted of varying degrees of subcutaneous edema of the face and, erythema and loss of hair of the ears, crusts on the skin of ears, around the eyes and on planum nasale, scar deformation of the ears, and bilateral ocular discharge; affected lambs also sought for shadowy shelters and they were poor doers. Several sheep recovered from the condition and then relapsed. Necropsy findings in six lambs included pale mucous membranes, emaciation, dermatitis, scar deformation of the ears, large yellow livers with marked lobular pattern, and moderate infestation by Haemonchus contortus. Histologically the liver lesions were similar in all necropsied lambs but with varying degrees of severity; they were consistent with brachiaria poisoning and included architectural disruption of hepatocellular trabecula, clusters of foamy macrophages occasionally forming multinucleated giant cells, swollen and vacuolated epatocytes, crystals or negative images of crystals in the biliary system, bilestasis, bile duct proliferation and lymphoplasmacytic infiltrate in portal triads. The skin lesions were those of photodermatitis and included epidermal necrosis, hyperkeratosis and dermal neutrophilic infiltrate. The results of this study allow to conclude that there is a genetic related resistance to brachiaria poisoning in sheep since the progeny of resistant sheep did not manifest the poisoning. The use of resistant flocks in brachiaria pastures is suggested as a valuable option for the prevention of brachiaria poisoning in sheep.
650 $aGenetic resistance
650 $aplant poisoning
650 $aPoisonous plants
650 $aDoença
650 $aOvino
650 $aPlanta toxica
650 $aResistência genética
650 $aSaponina
653 $aBrachiaria spp
653 $aDiseases of sheep
653 $aIntoxicação por planta
700 1 $aMELO, G. K. A.
700 1 $aHECKLER, R. F.
700 1 $aFACCIN, T. C.
700 1 $aÍTAVO, C. C. B. F.
700 1 $aFERNANDES, C. E.
700 1 $aGOMES, D. C.
700 1 $aLEMOS, R. A. A.
773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 36, n. 5, p. 383-388, maio. 2016.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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| Registros recuperados : 2 | |
| 1. |  | PUPIN, R. C.; MELO, G. K. A.; HECKLER, R. F.; FACCIN, T. C.; ÍTAVO, C. C. B. F.; FERNANDES, C. E.; GOMES, D. C.; LEMOS, R. A. A. Identification of lamb flocks susceptible and resistant against Brachiaria poisoning. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 5, p. 383-388, maio. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 2. | | HECKLER, R. F.; LEMOS, R. A. A. de; GOMES, D. C.; DUTRA, I. S.; SILV, A R. O. S.; LOBATO, F. C. F.; RAMOS, C. A. N.; BRUMATTI, R. C. Blackleg in cattle in the state Mato Grosso do Sul, Brazil: 59 cases. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 38, n. 1, p. 6-14, janeiro 2018. Título em português: Carbúnculo sintomático em bovinos em Mato Grosso do Sul: 59 casos.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 2 | |
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