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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
17/09/2013 |
Data da última atualização: |
17/05/2022 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
LIMA, J. T. M.; FONSECA, J. F. da; ESTEVES, L. V.; PENEIRAS, A. B. V.; LIMA, M. S. D.; BRANDÃO, F. Z. |
Afiliação: |
J. T. M. Lima, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC; L. V. Esteves, Fluminense Federal University - Niterói, Rio de Janeiro, Brazil; A. B. V. Peneiras, Fluminense Federal University - Niterói, Rio de Janeiro, Brazil; M. S. D. Lima, Fluminense Federal University - Niterói, Rio de Janeiro, Brazil; F. Z. Brandão, Fluminense Federal University - Niterói, Rio de Janeiro, Brazil. |
Título: |
Duration of estrus and time of ovulation in superovulated Santa Inês ewes. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Reproduction, Fertility and Development, v. 25, n. 1, p. 151, 2013. |
DOI: |
http://dx.doi.org/10.1071/RDv25n1Ab8 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The aim of this study was to determine the intervals between sponge removal and the onset of estrus, sponge removal and the first detected ovulation, and onset of estrus and the first ovulation, and also to determine the duration of estrus, in superovulated Santa Inês ewes subjected to natural mating (NM) and AI. The trial was done in July and February at Cachoeiras de Macacu?Rio de Janeiro (22°27'S, 43°39'W). Fifteen non-pregnant Santa Inês ewes, age 3.4 ± 1.4 years, weighing 47.8 ± 6.3 kg, with 3.3 ± 0.4 body condition score (scale of 1 to 5), were randomly assigned to 2 groups. Both groups were superovulated using the same protocol and were mated in a crossover design by NM and laparoscopic AI. Estrus was synchronized using intravaginal sponges (60 mg of medroxyprogesterone acetate; Progespon®, Schering Plough Animal Health, São Paulo, Brazil) inserted (Day 0) and maintained for 6 days. On Day 5, the ewes received IM injections of 300 IU of eCG (Novormon®, Schering Plough Animal Health) and 0.0375 mg of cloprostenol (Prolise®, Tecnopec, São Paulo, Brazil). Twelve hours after sponge removal, 0.025 mg of gonadorelin acetate (Gestran®, Tecnopec) was administered IM. Superovulation started 60 h after sponge removal and consisted of 5 IU kg -1 of porcine FSH (pFSH; Pluset®, Hertape Calier, Minas Gerais, Brazil) IM in 6 decreasing doses (25, 25, 15, 15, 10, and 10%) at 12-h intervals. At the first pFSH dose, new sponges were inserted. At the fifth pFSH dose, 0.0375 mg of cloprostenol was administered IM and the sponges were removed. After the sponge removal, the NM group was exposed to rams twice per day for mating, until the end of estrus. In the AI group, estrus was detected using a teaser with the penis diverted. The females were permitted to be mounted twice per day until the end of estrus, and were inseminated with frozen-thawed semen 24 and 36 h after the end of superovulation. The follicular development and ovulation time were observed using real-time ultrasonography (8.0 MHz Pie Medical®, Aquila Vet, Tokyo, Japan) at 12-h intervals. For statistical analysis, a Student's t-test was performed (5% significance level) using the BioEstat program. Results are presented as mean ± standard deviation. The time from sponge removal to onset of estrus and the duration of estrus did not differ between NM and AI groups (31.79 ± 5.94 v. 25.25 ± 10.38 h and 29.89 ± 11.54 v. 26.66 ± 8.67 h, respectively). The time from sponge removal to ovulation and from onset of estrus to the first ovulation were shorter (P < 0.001) in the NM group (32.11 ± 12.72 v. 56.48 ± 15.39 h and 8.61 ± 5.99 v. 32.25 ± 18.57 h, respectively). The time from sponge removal to ovulation in July and February was 56.07 ± 7.27 versus 56.83 ± 20.72 in the AI group and 29.54 ± 0.56 versus 33.83 ± 19.02 in the NM group, respectively, suggesting that the season of the year in a tropical region did not influence the ovulation time for each treatment. Possibly, the mechanical stimulation induced by the contact of the penis with the vagina fornix and by the accessory sex glands fluids in mating hastened the ovulation time in the NM group. The service can shorten the time of ovulation. MenosAbstract: The aim of this study was to determine the intervals between sponge removal and the onset of estrus, sponge removal and the first detected ovulation, and onset of estrus and the first ovulation, and also to determine the duration of estrus, in superovulated Santa Inês ewes subjected to natural mating (NM) and AI. The trial was done in July and February at Cachoeiras de Macacu?Rio de Janeiro (22°27'S, 43°39'W). Fifteen non-pregnant Santa Inês ewes, age 3.4 ± 1.4 years, weighing 47.8 ± 6.3 kg, with 3.3 ± 0.4 body condition score (scale of 1 to 5), were randomly assigned to 2 groups. Both groups were superovulated using the same protocol and were mated in a crossover design by NM and laparoscopic AI. Estrus was synchronized using intravaginal sponges (60 mg of medroxyprogesterone acetate; Progespon®, Schering Plough Animal Health, São Paulo, Brazil) inserted (Day 0) and maintained for 6 days. On Day 5, the ewes received IM injections of 300 IU of eCG (Novormon®, Schering Plough Animal Health) and 0.0375 mg of cloprostenol (Prolise®, Tecnopec, São Paulo, Brazil). Twelve hours after sponge removal, 0.025 mg of gonadorelin acetate (Gestran®, Tecnopec) was administered IM. Superovulation started 60 h after sponge removal and consisted of 5 IU kg -1 of porcine FSH (pFSH; Pluset®, Hertape Calier, Minas Gerais, Brazil) IM in 6 decreasing doses (25, 25, 15, 15, 10, and 10%) at 12-h intervals. At the first pFSH dose, new sponges were inserted. At the fifth pFSH dose, 0.0375 mg... Mostrar Tudo |
Palavras-Chave: |
Oestrus synchronization; Raça Santa Inês; Superovulated females. |
Thesagro: |
Ciclo estral; Ovelha; Ovino; Ovulação; Reprodução animal; Superovulação. |
Thesaurus Nal: |
Ovulation; Reproduction; Sheep; Superovulation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89520/1/rac-Duration-of-estrus.pdf
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Marc: |
LEADER 04210nam a2200337 a 4500 001 1966395 005 2022-05-17 008 2013 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1071/RDv25n1Ab8$2DOI 100 1 $aLIMA, J. T. M. 245 $aDuration of estrus and time of ovulation in superovulated Santa Inês ewes.$h[electronic resource] 260 $aReproduction, Fertility and Development, v. 25, n. 1, p. 151$c2013 520 $aAbstract: The aim of this study was to determine the intervals between sponge removal and the onset of estrus, sponge removal and the first detected ovulation, and onset of estrus and the first ovulation, and also to determine the duration of estrus, in superovulated Santa Inês ewes subjected to natural mating (NM) and AI. The trial was done in July and February at Cachoeiras de Macacu?Rio de Janeiro (22°27'S, 43°39'W). Fifteen non-pregnant Santa Inês ewes, age 3.4 ± 1.4 years, weighing 47.8 ± 6.3 kg, with 3.3 ± 0.4 body condition score (scale of 1 to 5), were randomly assigned to 2 groups. Both groups were superovulated using the same protocol and were mated in a crossover design by NM and laparoscopic AI. Estrus was synchronized using intravaginal sponges (60 mg of medroxyprogesterone acetate; Progespon®, Schering Plough Animal Health, São Paulo, Brazil) inserted (Day 0) and maintained for 6 days. On Day 5, the ewes received IM injections of 300 IU of eCG (Novormon®, Schering Plough Animal Health) and 0.0375 mg of cloprostenol (Prolise®, Tecnopec, São Paulo, Brazil). Twelve hours after sponge removal, 0.025 mg of gonadorelin acetate (Gestran®, Tecnopec) was administered IM. Superovulation started 60 h after sponge removal and consisted of 5 IU kg -1 of porcine FSH (pFSH; Pluset®, Hertape Calier, Minas Gerais, Brazil) IM in 6 decreasing doses (25, 25, 15, 15, 10, and 10%) at 12-h intervals. At the first pFSH dose, new sponges were inserted. At the fifth pFSH dose, 0.0375 mg of cloprostenol was administered IM and the sponges were removed. After the sponge removal, the NM group was exposed to rams twice per day for mating, until the end of estrus. In the AI group, estrus was detected using a teaser with the penis diverted. The females were permitted to be mounted twice per day until the end of estrus, and were inseminated with frozen-thawed semen 24 and 36 h after the end of superovulation. The follicular development and ovulation time were observed using real-time ultrasonography (8.0 MHz Pie Medical®, Aquila Vet, Tokyo, Japan) at 12-h intervals. For statistical analysis, a Student's t-test was performed (5% significance level) using the BioEstat program. Results are presented as mean ± standard deviation. The time from sponge removal to onset of estrus and the duration of estrus did not differ between NM and AI groups (31.79 ± 5.94 v. 25.25 ± 10.38 h and 29.89 ± 11.54 v. 26.66 ± 8.67 h, respectively). The time from sponge removal to ovulation and from onset of estrus to the first ovulation were shorter (P < 0.001) in the NM group (32.11 ± 12.72 v. 56.48 ± 15.39 h and 8.61 ± 5.99 v. 32.25 ± 18.57 h, respectively). The time from sponge removal to ovulation in July and February was 56.07 ± 7.27 versus 56.83 ± 20.72 in the AI group and 29.54 ± 0.56 versus 33.83 ± 19.02 in the NM group, respectively, suggesting that the season of the year in a tropical region did not influence the ovulation time for each treatment. Possibly, the mechanical stimulation induced by the contact of the penis with the vagina fornix and by the accessory sex glands fluids in mating hastened the ovulation time in the NM group. The service can shorten the time of ovulation. 650 $aOvulation 650 $aReproduction 650 $aSheep 650 $aSuperovulation 650 $aCiclo estral 650 $aOvelha 650 $aOvino 650 $aOvulação 650 $aReprodução animal 650 $aSuperovulação 653 $aOestrus synchronization 653 $aRaça Santa Inês 653 $aSuperovulated females 700 1 $aFONSECA, J. F. da 700 1 $aESTEVES, L. V. 700 1 $aPENEIRAS, A. B. V. 700 1 $aLIMA, M. S. D. 700 1 $aBRANDÃO, F. Z.
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Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
15/12/2021 |
Data da última atualização: |
15/12/2021 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
OLIVEIRA, F. F. de; ALMEIDA, R. E. M. de; ROCHA, B. R.; CUSTODIO, D. P.; LIMA, L. S.; OLIVEIRA, H. J. B. de; COSTA, R. V. da; SANTOS, A. C. dos; ARAUJO, T. A. de; OLIVEIRA, L. B. de. |
Afiliação: |
FERNANDA FERNANDES DE OLIVEIRA, Centro Universitário Católica do Tocantins; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; BEATRIZ RODRIGUES ROCHA, Universidade Estadual do Tocantins; DANIEL PETTERSEN CUSTODIO, CNPASA; LILA SOARES LIMA, Centro Universitário Católica do Tocantins; HYGO JOVANE BORGES DE OLIVEIRA, Centro Universitário Católica do Tocantins; RODRIGO VERAS DA COSTA, CNPMS; ÁLLYSSON COSTA DOS SANTOS, Instituto Federal de Educação, Ciência e Tecnologia do Tocantins-IFTO; THIAGO AMARAL DE ARAÚJO, Instituto Federal de Educação, Ciência e Tecnologia do Tocantins-IFTO; LEONARDO BENTO DE OLIVEIRA, Instituto Federal de Educação, Ciência e Tecnologia do Tocantins-IFTO. |
Título: |
Consórcio de milho com sorgo: alterações nas relações interespecíficas provocadas pelo tipo de híbrido de milho. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
In: SEMINÁRIO NACIONAL DE MILHO SAFRINHA, 16., 2021, Assis. Três décadas de inovações: avanços e desafios: anais. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2021. |
Páginas: |
p. 81-82. |
Idioma: |
Português |
Palavras-Chave: |
Integração lavoura-pecuária. |
Thesagro: |
Biomassa; Consorciação de Cultura; Produção; Silagem. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/229229/1/Consorcio-milho.pdf
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Marc: |
LEADER 01001nam a2200277 a 4500 001 2137875 005 2021-12-15 008 2021 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, F. F. de 245 $aConsórcio de milho com sorgo$balterações nas relações interespecíficas provocadas pelo tipo de híbrido de milho.$h[electronic resource] 260 $aIn: SEMINÁRIO NACIONAL DE MILHO SAFRINHA, 16., 2021, Assis. Três décadas de inovações: avanços e desafios: anais. Sete Lagoas: Associação Brasileira de Milho e Sorgo$c2021 300 $ap. 81-82. 650 $aBiomassa 650 $aConsorciação de Cultura 650 $aProdução 650 $aSilagem 653 $aIntegração lavoura-pecuária 700 1 $aALMEIDA, R. E. M. de 700 1 $aROCHA, B. R. 700 1 $aCUSTODIO, D. P. 700 1 $aLIMA, L. S. 700 1 $aOLIVEIRA, H. J. B. de 700 1 $aCOSTA, R. V. da 700 1 $aSANTOS, A. C. dos 700 1 $aARAUJO, T. A. de 700 1 $aOLIVEIRA, L. B. de
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