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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
Data corrente: |
11/08/2022 |
Data da última atualização: |
11/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
DIAS, J. H.; GONCALVES, J. D.; ARRAIS, A. M.; SOUZA-FABJAN, J. M. G.; BASTOS R.; BATISTA, R. I. T. P.; SIQUEIRA, L. G. B.; OLIVEIRA, M. E. F.; FONSECA, J. F. da. |
Afiliação: |
JENNIFFER HAUSCHILDT DIAS, Universidade Federal de Viçosa; JOEDSON DANTAS GONÇALVES, Universidade Estadual Paulista; ALINE MATOS ARRAIS, Universidade Federal Rural do Rio de Janeiro; JOANNA MARIA GONSALVES SOUZA-FABJAN, Universidade Federal Fluminense; RODOLFO BASTOS, Universidade Estadual do Norte Fluminense Darcy; RIBRIO IVAN TAVARES PEREIRA BATISTA, Universidade Federal Fluminense; LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; MARIA ERICA F. OLIVEIRA, Universidade Estadual Paulista; JEFERSON FERREIRA DA FONSECA, CNPC. |
Título: |
Effects of different doses of estradiol benzoate used in a cervical relaxation protocol on the success of non-surgical embryo recovery and luteal function in superovulated ewes. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Domestic Animal Endocrinology, v. 82, 106751, 2023. |
DOI: |
https://doi.org/10.1016/j.domaniend.2022.106751 |
Idioma: |
Inglês |
Conteúdo: |
This study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments did not affect NSER success but they did affect luteal function by altering P4 and E2 concentrations.Therefore, the NSER technique can be successfully performed in ewes with or without prior treatment with EB. MenosThis study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments ... Mostrar Tudo |
Palavras-Chave: |
Cervical dilation; Dilatação cervical; In vivo embryo production; Non surgical embryo recovery; NSER; Superovulated females. |
Thesagro: |
Ovelha; Ovino; Progesterona. |
Thesaurus Nal: |
Animal reproduction; Embryo transfer; Progesterone; Sheep; Superovulation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02971naa a2200397 a 4500 001 2145373 005 2022-08-11 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.domaniend.2022.106751$2DOI 100 1 $aDIAS, J. H. 245 $aEffects of different doses of estradiol benzoate used in a cervical relaxation protocol on the success of non-surgical embryo recovery and luteal function in superovulated ewes.$h[electronic resource] 260 $c2023 520 $aThis study investigated the effectiveness of different doses of estradiol benzoate (EB) to promote cervical relaxation and their effects on luteal function and outcomes of non-surgical embryo recovery (NSER) in sheep. Multiparous (MULT) and nulliparous (NULL) crossbred Lacaune X Santa Inês ewes were superovulated and naturally bred. Seven days after progesterone withdrawal, females were randomly assigned to one of three distinct cervical relaxation protocols, consisting of i.m. treatment with 37.5 μg d-cloprostenol and different doses of EB: 0.0 mg (0.0EB group; n = 3 NULL and 14 MULT); 0.5 mg (0.5EB group; n = 4 NULL and 12 MULT) or 1.0 mg (1.0EB group, n = 6 NULL and 11 MULT) 16 h before NSER. All ewes received 50 IU of oxytocin 20 min before NSER (D17). Blood samples were collected and ultrasound exams (B-mode and color Doppler) were performed at two timepoints: immediately before d-cloprostenol and EB treatments and prior to NSER. Estrous behavior, corpora lutea count and NSER success outcomes were not affected by EB treatments nor parity (P > 0.05). Embryo recovery rate was greater for ewes in the 0.5EB group and in the NULL ewes (P < 0.05). Ovarian biometrics differed between the two evaluation timepoints in all groups (P < 0.05). Plasma estradiol increased over time, reaching a significant greater level in 1.0EB ewes compared to controls on D17 (P < 0.05), whereas progesterone concentrations decreased over time in all groups (P > 0.05). In conclusion, treatments did not affect NSER success but they did affect luteal function by altering P4 and E2 concentrations.Therefore, the NSER technique can be successfully performed in ewes with or without prior treatment with EB. 650 $aAnimal reproduction 650 $aEmbryo transfer 650 $aProgesterone 650 $aSheep 650 $aSuperovulation 650 $aOvelha 650 $aOvino 650 $aProgesterona 653 $aCervical dilation 653 $aDilatação cervical 653 $aIn vivo embryo production 653 $aNon surgical embryo recovery 653 $aNSER 653 $aSuperovulated females 700 1 $aGONCALVES, J. D. 700 1 $aARRAIS, A. M. 700 1 $aSOUZA-FABJAN, J. M. G. 700 1 $aBASTOS R. 700 1 $aBATISTA, R. I. T. P. 700 1 $aSIQUEIRA, L. G. B. 700 1 $aOLIVEIRA, M. E. F. 700 1 $aFONSECA, J. F. da 773 $tDomestic Animal Endocrinology$gv. 82, 106751, 2023.
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Embrapa Gado de Leite (CNPGL) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
30/11/2000 |
Data da última atualização: |
31/03/2017 |
Autoria: |
SERENO, J. R. B.; PELLEGRIN, A. O.; LARA, M. A. C.; ABREU, U. G. P. de; SERENO, F. T. P. S.; CHALITA, L. V. A. S. |
Afiliação: |
Embrapa Pantanal (Corumba, MS); Agencia Espanhola de Cooperacion Internacional (AECI); Instituto de Zootecnia (Nova Odessa, SP); Universidad de Cordoba (Espanha); UNESP-IB (Botucatu, SP). |
Título: |
Study of age and weight at first breeding of pantaneira, nelore and 1/2 pantaneira x nelore heifers in the Brazilian Pantanal. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49). |
Páginas: |
(P-82). |
Idioma: |
Inglês |
Conteúdo: |
The Pantanal is considered to be one of the largest Brazilian regions (114 million km2) of beef-cattle cow-calf production, where the activity is extensively developed on native pastures with a stocking rate of 0.27 AU/ha. The beef cattle exploitation is of fundamental importance to the development and conservation of the Pantanal ecosystem, since it represents the main income of the local producers, who practice, in their great majority, ecological meat production. This practice utilizers in a rational manner the natural resources of the region to produce meat free of chemical additives, known as green meat, produced exclusively on natural pastures. The objetive of this study was to estimate the age and weight at first breeding of yearling heifers of the breeds Pantaneira (P), Nelore (N) and 1/2 Pantaneira x Nelore (PxN). |
Palavras-Chave: |
Bovine. |
Thesagro: |
Criação; Recurso Genético; Reprodução Animal. |
Thesaurus NAL: |
animal genetic resources; animal reproduction; breeding season; Pantanal. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01876naa a2200289 a 4500 001 1804366 005 2017-03-31 008 2000 bl --- 0-- u #d 100 1 $aSERENO, J. R. B. 245 $aStudy of age and weight at first breeding of pantaneira, nelore and 1/2 pantaneira x nelore heifers in the Brazilian Pantanal. 260 $c2000 300 $a(P-82). 520 $aThe Pantanal is considered to be one of the largest Brazilian regions (114 million km2) of beef-cattle cow-calf production, where the activity is extensively developed on native pastures with a stocking rate of 0.27 AU/ha. The beef cattle exploitation is of fundamental importance to the development and conservation of the Pantanal ecosystem, since it represents the main income of the local producers, who practice, in their great majority, ecological meat production. This practice utilizers in a rational manner the natural resources of the region to produce meat free of chemical additives, known as green meat, produced exclusively on natural pastures. The objetive of this study was to estimate the age and weight at first breeding of yearling heifers of the breeds Pantaneira (P), Nelore (N) and 1/2 Pantaneira x Nelore (PxN). 650 $aanimal genetic resources 650 $aanimal reproduction 650 $abreeding season 650 $aPantanal 650 $aCriação 650 $aRecurso Genético 650 $aReprodução Animal 653 $aBovine 700 1 $aPELLEGRIN, A. O. 700 1 $aLARA, M. A. C. 700 1 $aABREU, U. G. P. de 700 1 $aSERENO, F. T. P. S. 700 1 $aCHALITA, L. V. A. S. 773 $tIn: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49).
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