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Registros recuperados : 7 | |
1. | | AREAS, V. S.; SIQUEIRA, L. G. B.; GHETTI, A. M.; SOUZA, E. D.; ARASHIRO, E. K. N.; CAMARGO, L. S. de A.; VIANA, J. H. M. Avaliação da vascularização do corpo lúteo por Doppler colorido no período de reconhecimento materno da gestação: REsultados preliminares. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 26., 2012, Foz do Iguaçu. Anais. Belo Horizonte: CBRA, 2012. p. 491 Biblioteca(s): Embrapa Gado de Leite. |
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2. | | SIQUEIRA, L. G. B.; AREAS, V. S.; GHETTI, A. M.; FONSECA, J. F. da; PALHAO, M. P.; FERNANDES, C. A. C.; VIANA, J. H. M. Color Doppler flow imaging for the early detection of nonpregnant cattle at 20 days after timed artificial insemination. Journal of Dairy Science, v. 96, n. 10, p. 6461-6472, 2013. Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Gado de Leite. |
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3. | | GHETTI, A. M.; BRANDÃO, F. Z.; SIQUEIRA, L. G. B.; AREAS, V. S.; ARASHIRO, E. K. N.; FERNANDES, C. A. C.; PALHÃO, M. P.; VIANA, J. H. M. Comparação dos métodos objetivo e subjetivo de avaliação do padrão vascular do folículo pré-ovulatório utilizando-se Doppler colorido. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 26., 2012, Foz do Iguaçu. Anais. Belo Horizonte: CBRA, 2012. Biblioteca(s): Embrapa Gado de Leite. |
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4. | | GHETTI, A. M.; BRANDAO, F. Z.; SIQUEIRA, L. G. B.; AREAS, V. S.; ARASHIRO, E. K. N.; FERNANDES, C. A. C.; PALHAO, M. P.; VIANA, J. H. M. Comparação dos metodos e subjetivo de avaliação do padrão vascular do foliculo pre-ovulatorio utilizando-se Doppler colorido. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 26., 2012, Foz do Iguaçu. Anais. Belo Horizonte: CBRA, 2012. p. 478. Biblioteca(s): Embrapa Gado de Leite. |
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5. | | VIANA, J. H. M.; ARASHIRO, E. K. N.; SIQUEIRA, L. G. B.; GHETTI, A. M.; AREAS, V. S.; GUIMARÃES, C. R. B.; PALHAO, M. P.; CAMARGO, L. S. de A.; FERNANDES, C. A. C. Doppler ultrasonography as a tool for ovarian management. Animal Reproduction, v. 10, n. 3, p. 215-222, 2013. Biblioteca(s): Embrapa Gado de Leite. |
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6. | | SIQUEIRA, L. G. B.; GHETTI, A. M.; AREAS, V. S.; SOUZA, E. D.; ARASHIRO, E. K. N.; CAMARGO, L. S. de A.; FONSECA, J. F. da; VIANA, J. H. M. Predição de não-gestação 20 dias após a IATF pela avaliação do corpo lúteo com Doppler colorido. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 26., 2012, Foz do Iguaçu. Resumos... Foz do Iguaçu: SBTE, 2012. p. 490. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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7. | | SIQUEIRA, L. G. B.; GHETTI, A. M.; AREAS, V. S.; SOUZA, E. D.; ARASHIRO, E. K. N.; CAMARGO, L. S. de A.; FONSECA, J. F. da; VIANA, J. H. M. Predição de não-gestação 20 dias após a IATF pela avaliação do corpo lúteo com Doppler colorido. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 26., 2012, Foz do Iguaçu. Resumos... Foz do Iguaçu: SBTE, 2012. p. 490 Biblioteca(s): Embrapa Gado de Leite. |
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Registros recuperados : 7 | |
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| 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: |
08/10/2013 |
Data da última atualização: |
05/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SIQUEIRA, L. G. B.; AREAS, V. S.; GHETTI, A. M.; FONSECA, J. F. da; PALHAO, M. P.; FERNANDES, C. A. C.; VIANA, J. H. M. |
Afiliação: |
LUIZ GUSTAVO BRUNO SIQUEIRA, CNPGL; V. S. AREAS, UFES; A. M. GHETTI, UFF; JEFERSON FERREIRA DA FONSECA, CNPC; M. P. PALHAO, UJRV, Alfenas, MG; C. A. C. FERNANDES, UJRV, Alfenas MG; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
Título: |
Color Doppler flow imaging for the early detection of nonpregnant cattle at 20 days after timed artificial insemination. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Journal of Dairy Science, v. 96, n. 10, p. 6461-6472, 2013. |
DOI: |
https://doi.org/10.3168/jds.2013-6814 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The objective was to determine the accuracy of a pregnancy test for predicting nonpregnant cattle based on the evaluation of corpus luteum (CL) blood flow at 20 d (CLBF-d20) after timed artificial insemination (TAI). Crossbred Holstein-Gir dairy heifers (n = 209) and lactating cows (n = 317) were synchronized for TAI using the following protocol: intravaginal implant (1.0 g of progesterone) and 2 mg of estradiol benzoate i.m. on d −10, implant removal and 0.526 mg of sodium cloprostenol i.m. on d −2, 1 mg of estradiol benzoate i.m. on d −1, and TAI on d 0. On d 20, animals underwent grayscale ultrasonography (US) to locate the CL and color flow Doppler to evaluate CLBF-d20 using a portable ultrasound equipped with a 7.5-MHz rectal transducer. Based only on a visual, subjective CLBF evaluation, the animals were classified as pregnant or not pregnant. On d 30 to 35, blinded from results of the previous diagnosis, the same operator performed a final pregnancy diagnosis using US to visualize the fetal heartbeat (gold standard; US-d30). A second evaluator also analyzed the CLBF-d20 in the same animals by watching 7-s recorded videos. Blood samples were collected from a subset of 171 females to determine, by RIA, plasma progesterone (P4) concentrations, which indicate CL function. The final pregnancy outcome (US-d30) was retrospectively compared with the CLBFd20 diagnoses and then classified either as correct or incorrect. The number of true positive, true negative, false positive, and false negative decisions were inserted into a 2 × 2 decision matrix. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the CLBF-d20 test were calculated using specific equations. Binomial variables (pregnancy rate and proportions) were analyzed using Fisher?s exact test for the effect of parity and to compare between evaluators and tests (CLBF-d20 vs. plasma P4). The kappa values were calculated to quantify the agreement between CLBF-d20 and the gold standard (US-d30) and between evaluators. The performance parameters of CLBF-d20 test were as follows: sensitivity = 99.0%, specificity = 53.7%, positive predictive value = 65.1%, negative predictive value = 98.5%, and accuracy = 74.8%. False negatives represented only 0.4% of the exams. No differences existed in these parameters between evaluators (no. 1 vs. no. 2) and tests (CLBF-d20 vs. plasma P4). Moreover, a high level of agreement was observed between evaluators (0.91). In conclusion, visual evaluation of CLBF-d20 represents a quick, reliable, and consistent diagnostic test that enables the early detection of nonpregnant cattle. MenosAbstract: The objective was to determine the accuracy of a pregnancy test for predicting nonpregnant cattle based on the evaluation of corpus luteum (CL) blood flow at 20 d (CLBF-d20) after timed artificial insemination (TAI). Crossbred Holstein-Gir dairy heifers (n = 209) and lactating cows (n = 317) were synchronized for TAI using the following protocol: intravaginal implant (1.0 g of progesterone) and 2 mg of estradiol benzoate i.m. on d −10, implant removal and 0.526 mg of sodium cloprostenol i.m. on d −2, 1 mg of estradiol benzoate i.m. on d −1, and TAI on d 0. On d 20, animals underwent grayscale ultrasonography (US) to locate the CL and color flow Doppler to evaluate CLBF-d20 using a portable ultrasound equipped with a 7.5-MHz rectal transducer. Based only on a visual, subjective CLBF evaluation, the animals were classified as pregnant or not pregnant. On d 30 to 35, blinded from results of the previous diagnosis, the same operator performed a final pregnancy diagnosis using US to visualize the fetal heartbeat (gold standard; US-d30). A second evaluator also analyzed the CLBF-d20 in the same animals by watching 7-s recorded videos. Blood samples were collected from a subset of 171 females to determine, by RIA, plasma progesterone (P4) concentrations, which indicate CL function. The final pregnancy outcome (US-d30) was retrospectively compared with the CLBFd20 diagnoses and then classified either as correct or incorrect. The number of true positive, t... Mostrar Tudo |
Palavras-Chave: |
Bovines; Doppler; Luteólise; Ultra-Som; Ultrassonografia. |
Thesagro: |
Bovino; Circulação Sangüínea; Corpo lúteo; Diagnóstico; Gado; Inseminação artificial; Prenhez; Reprodução animal; Vaca. |
Thesaurus NAL: |
Animal reproduction; Blood circulation; blood flow; Cattle; corpus luteum; Luteolysis; Pregnancy. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 03964naa a2200457 a 4500 001 1980679 005 2024-02-05 008 2013 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3168/jds.2013-6814$2DOI 100 1 $aSIQUEIRA, L. G. B. 245 $aColor Doppler flow imaging for the early detection of nonpregnant cattle at 20 days after timed artificial insemination.$h[electronic resource] 260 $c2013 520 $aAbstract: The objective was to determine the accuracy of a pregnancy test for predicting nonpregnant cattle based on the evaluation of corpus luteum (CL) blood flow at 20 d (CLBF-d20) after timed artificial insemination (TAI). Crossbred Holstein-Gir dairy heifers (n = 209) and lactating cows (n = 317) were synchronized for TAI using the following protocol: intravaginal implant (1.0 g of progesterone) and 2 mg of estradiol benzoate i.m. on d −10, implant removal and 0.526 mg of sodium cloprostenol i.m. on d −2, 1 mg of estradiol benzoate i.m. on d −1, and TAI on d 0. On d 20, animals underwent grayscale ultrasonography (US) to locate the CL and color flow Doppler to evaluate CLBF-d20 using a portable ultrasound equipped with a 7.5-MHz rectal transducer. Based only on a visual, subjective CLBF evaluation, the animals were classified as pregnant or not pregnant. On d 30 to 35, blinded from results of the previous diagnosis, the same operator performed a final pregnancy diagnosis using US to visualize the fetal heartbeat (gold standard; US-d30). A second evaluator also analyzed the CLBF-d20 in the same animals by watching 7-s recorded videos. Blood samples were collected from a subset of 171 females to determine, by RIA, plasma progesterone (P4) concentrations, which indicate CL function. The final pregnancy outcome (US-d30) was retrospectively compared with the CLBFd20 diagnoses and then classified either as correct or incorrect. The number of true positive, true negative, false positive, and false negative decisions were inserted into a 2 × 2 decision matrix. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the CLBF-d20 test were calculated using specific equations. Binomial variables (pregnancy rate and proportions) were analyzed using Fisher?s exact test for the effect of parity and to compare between evaluators and tests (CLBF-d20 vs. plasma P4). The kappa values were calculated to quantify the agreement between CLBF-d20 and the gold standard (US-d30) and between evaluators. The performance parameters of CLBF-d20 test were as follows: sensitivity = 99.0%, specificity = 53.7%, positive predictive value = 65.1%, negative predictive value = 98.5%, and accuracy = 74.8%. False negatives represented only 0.4% of the exams. No differences existed in these parameters between evaluators (no. 1 vs. no. 2) and tests (CLBF-d20 vs. plasma P4). Moreover, a high level of agreement was observed between evaluators (0.91). In conclusion, visual evaluation of CLBF-d20 represents a quick, reliable, and consistent diagnostic test that enables the early detection of nonpregnant cattle. 650 $aAnimal reproduction 650 $aBlood circulation 650 $ablood flow 650 $aCattle 650 $acorpus luteum 650 $aLuteolysis 650 $aPregnancy 650 $aBovino 650 $aCirculação Sangüínea 650 $aCorpo lúteo 650 $aDiagnóstico 650 $aGado 650 $aInseminação artificial 650 $aPrenhez 650 $aReprodução animal 650 $aVaca 653 $aBovines 653 $aDoppler 653 $aLuteólise 653 $aUltra-Som 653 $aUltrassonografia 700 1 $aAREAS, V. S. 700 1 $aGHETTI, A. M. 700 1 $aFONSECA, J. F. da 700 1 $aPALHAO, M. P. 700 1 $aFERNANDES, C. A. C. 700 1 $aVIANA, J. H. M. 773 $tJournal of Dairy Science$gv. 96, n. 10, p. 6461-6472, 2013.
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