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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
31/08/2020 |
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Data da última atualização: |
28/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ANDRADE, J. P. N.; GOMEZ-LÉON, V. E.; ANDRADE, F. S.; CARVALHO, B. P.; LACOUTH, K. L.; GARCIA, F. Z.; JACOB, J. C. F.; SALES, J. N. S.; WILTBANK, M. C.; MELLO, M. R. B. |
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Afiliação: |
Joao P. N. Andrade, Universidade Federal Rural do Rio de Janeiro / University of Wisconsin-Madison; Victor E. Gomez-Leon, University of Wisconsin-Madison; Fabiana S. Andrade, Universidade Federal Rural do Rio de Janeiro / University of Wisconsin-Madison; BRUNO PENA CARVALHO, CPAF-AC; Karen L. Lacouth, Universidade Federal do Acre; Felipe Z. Garcia, Universidade Federal Rural do Rio de Janeiro; Júlio C. F. Jacob, Universidade Federal Rural do Rio de Janeiro; José N. S. Sales, Universidade Federal de Lavras; Milo C. Wiltbank, University of Wisconsin-Madison; Marco R.B. Mello, Universidade Federal Rural do Rio de Janeiro. |
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Título: |
Development of a novel 21-day reinsemination program, ReBreed21, in Bos indicus heifers. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Theriogenology, v. 115, p. 125-131, Oct. 2020. |
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ISSN: |
0093-691X |
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DOI: |
https://doi.org/10.1016/j.theriogenology.2020.04.021 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d after TAI in ReBreed21 (Day 33 of pregnancy) and 14 d after TAI in Resynch14 (Day 38 of pregnancy). Final PD was performed 40 d after 3rd TAI. Results for Experiment 1 were: diameter of LF 11.8 ± 0.23 mm; 88.9% OV; 20.5% false positives; 38.1% P/AI at 1st TAI; 44.4% overall P/AI for ReBreed21 TAIs; 72.3% total pregnant at end of BS. In experiment 2, Rebreed21 vs. Resynch14 were different for: diameter of LF (10.9 ± 0.17 vs. 10.0 ± 0.17 mm, P = 0.0003), heifers with LF < 8.5 mm (10.2 vs. 26.4%, P = 0.04), or LF 11 mm (50.0 vs. 37.2%, P = 0.001), and P/AI at first TAI (29.3% [43/147] vs. 20.3% [31/153], P = 0.074) but similar for OV (overall 86.8% [239/275], P = 0.82), false positives (P = 0.52) overall P/AI for Resynch TAIs (33.6 vs. 28.8%, P = 0.4), and total pregnant at end of BS (58.5% [86/147] vs. 55.6% [85/153], P = 0.64). In addition, median time to pregnancy was 9 d earlier (P = 0.0007) for ReBreed21 than Resynch14. Thus, ReBreed21 is a novel protocol that allows earlier reinseminations than Resynch14 but with similar fertility. MenosThe aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d afte... Mostrar Tudo |
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Palavras-Chave: |
Cruce de animales; Inseminación artificial; Métodos de mejoramiento genético; Ovulación; Razas zebú; ReBreed21; Ressincronização; Resynchronization; Vaquilla. |
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Thesagro: |
Bos Indicus; Gado Nelore; Gado Zebu; Inseminação Artificial; Novilho; Ovulação; Reprodução Animal. |
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Thesaurus Nal: |
Animal breeding; Artificial insemination; Breeding methods; Heifers; Nellore; Ovulation; Zebu breeds. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215666/1/27022.pdf
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Marc: |
LEADER 04040naa a2200529 a 4500
001 2124659
005 2021-06-28
008 2020 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $ahttps://doi.org/10.1016/j.theriogenology.2020.04.021$2DOI
100 1 $aANDRADE, J. P. N.
245 $aDevelopment of a novel 21-day reinsemination program, ReBreed21, in Bos indicus heifers.$h[electronic resource]
260 $c2020
520 $aThe aim was to develop a program for resynchronization of ovulation (ReBreed21) that allowed reinsemination of non-pregnant Bos indicus heifers every 21 d using timed AI (TAI) without the need for detection of estrus. The Rebreed21 program begins 12 d after previous TAI (Day 0) by inserting an intravaginal P4 implant (Day 12) that is removed 7 d later (Day 19) combined with treatment with 300 IU of eCG. On Day 21, early pregnancy diagnosis (Doppler PD) is performed based on CL vascularity. Nonpregnant (NP) heifers immediately received AI combined with 100 mg of GnRH. The program is replicated 12 d after second TAI to produce a breeding season (BS) of 42 d with 3 potential TAIs. Two experiments were conducted as a proof of concept for this rapid rebreeding program. In Experiment 1, 76 heifers were enrolled in ReBreed21, as explained above. In Experiment 2, 300 Nellore heifers were synchronized for 1st TAI and randomly assigned to one of two groups: ReBreed21 (n = 147) or another early resynchronization procedure, Resynch14 (n = 153) with P4 implant inserted 14 d after previous TAI plus 50 mg of long-acting injectable P4; 8 d later P4 implant removed (Day 22) and early Doppler PD performed; NP heifers received 150 mg of cloprostenol, 0.5 mg of ECP, and 300 IU of eCG with TAI on Day 24. In both experiments, the largest follicle (LF) was measured at each Resynch TAI. Ultrasound was later used to confirm the early Doppler PD and to determine ovulation (OV) to Resynch at 12 d after TAI in ReBreed21 (Day 33 of pregnancy) and 14 d after TAI in Resynch14 (Day 38 of pregnancy). Final PD was performed 40 d after 3rd TAI. Results for Experiment 1 were: diameter of LF 11.8 ± 0.23 mm; 88.9% OV; 20.5% false positives; 38.1% P/AI at 1st TAI; 44.4% overall P/AI for ReBreed21 TAIs; 72.3% total pregnant at end of BS. In experiment 2, Rebreed21 vs. Resynch14 were different for: diameter of LF (10.9 ± 0.17 vs. 10.0 ± 0.17 mm, P = 0.0003), heifers with LF < 8.5 mm (10.2 vs. 26.4%, P = 0.04), or LF 11 mm (50.0 vs. 37.2%, P = 0.001), and P/AI at first TAI (29.3% [43/147] vs. 20.3% [31/153], P = 0.074) but similar for OV (overall 86.8% [239/275], P = 0.82), false positives (P = 0.52) overall P/AI for Resynch TAIs (33.6 vs. 28.8%, P = 0.4), and total pregnant at end of BS (58.5% [86/147] vs. 55.6% [85/153], P = 0.64). In addition, median time to pregnancy was 9 d earlier (P = 0.0007) for ReBreed21 than Resynch14. Thus, ReBreed21 is a novel protocol that allows earlier reinseminations than Resynch14 but with similar fertility.
650 $aAnimal breeding
650 $aArtificial insemination
650 $aBreeding methods
650 $aHeifers
650 $aNellore
650 $aOvulation
650 $aZebu breeds
650 $aBos Indicus
650 $aGado Nelore
650 $aGado Zebu
650 $aInseminação Artificial
650 $aNovilho
650 $aOvulação
650 $aReprodução Animal
653 $aCruce de animales
653 $aInseminación artificial
653 $aMétodos de mejoramiento genético
653 $aOvulación
653 $aRazas zebú
653 $aReBreed21
653 $aRessincronização
653 $aResynchronization
653 $aVaquilla
700 1 $aGOMEZ-LÉON, V. E.
700 1 $aANDRADE, F. S.
700 1 $aCARVALHO, B. P.
700 1 $aLACOUTH, K. L.
700 1 $aGARCIA, F. Z.
700 1 $aJACOB, J. C. F.
700 1 $aSALES, J. N. S.
700 1 $aWILTBANK, M. C.
700 1 $aMELLO, M. R. B.
773 $tTheriogenology$gv. 115, p. 125-131, Oct. 2020.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
08/03/2018 |
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Data da última atualização: |
08/02/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ROSA, M. G.; MATOS, E. da S.; SOUZA, L. H. C.; MEDEIROS, A. L.; FERREIRA, J. M.; ISERNHAGEN, I.; MAGALHÃES, C. A. de S. |
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Afiliação: |
MARIANA GONÇALVES ROSA, UFMT-SINOP; EDUARDO DA SILVA MATOS, CPAMT; LETICIA HELENA CAMPOS DE SOUZA, UFMT-CUIABA; ANGÉLICA LARA DE MEDEIROS, UFMT-SINOP; JACQUELINE MIRANDA FERREIRA, IFMT-CACERES; INGO ISERNHAGEN, CPAMT; CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT. |
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Título: |
Atributos físicos do solo em área sem restauração florestal no norte de Mato Grosso. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: ENCONTRO DE CIÊNCIA E TECNOLOGIAS AGROSSUSTENTÁVEIS; JORNADA CIENTÍFICA DA EMBRAPA AGROSSILVIPASTORIL, 6., 2017, Sinop, MT. Resumos... Sinop, MT: Embrapa Agrossilpastoril, 2017. p. 271-275. |
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Idioma: |
Português |
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Conteúdo: |
Entre os fatores que podem influenciar o sucesso no estabelecimento de plantas em áreas de restauração florestal estão os atributos físicos do solo (Martins; Augusto, 2012). Mensurar essas variáveis no início e durante a condução de projetos com essa finalidade pode dar indicativos de ações de manejo necessárias para aumentar as chances de restabelecimento dos processos naturais ou que otimizem o crescimento das espécies utilizadas, especialmente quando se almeja o manejo econômico das mesmas. A densidade do solo e distribuição de poros, por exemplo, são atributos de fácil mensuração, que permitem inferências sobre a estrutura do solo e possíveis impedimentos ao crescimento e desenvolvimento de plantas. Solos com maior densidadee porosidade limitada podem vir a limitar o desenvolvimento satisfatório, já que interferem na dinâmica de água, nutrientes e crescimento radicular (Reichert et al., 2003). O objetivo do presente estudo foi avaliar a porosidade total, macroporos, microporos e densidade do solo de áreas sobre diferentes arranjos de restauração florestal. |
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Palavras-Chave: |
Densidade do solo; Macroporo; Microporo; Restauração florestal; Sinop-MT. |
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Thesagro: |
Capilaridade; Física do solo; Porosidade. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/231088/1/2017-cpamt-esm-atributos-fisica-solo-area-restauracao-florestal-norte-mt-p-271-275.pdf
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Marc: |
LEADER 02057nam a2200277 a 4500
001 2088815
005 2022-02-08
008 2017 bl uuuu u00u1 u #d
100 1 $aROSA, M. G.
245 $aAtributos físicos do solo em área sem restauração florestal no norte de Mato Grosso.$h[electronic resource]
260 $aIn: ENCONTRO DE CIÊNCIA E TECNOLOGIAS AGROSSUSTENTÁVEIS; JORNADA CIENTÍFICA DA EMBRAPA AGROSSILVIPASTORIL, 6., 2017, Sinop, MT. Resumos... Sinop, MT: Embrapa Agrossilpastoril, 2017. p. 271-275.$c2017
520 $aEntre os fatores que podem influenciar o sucesso no estabelecimento de plantas em áreas de restauração florestal estão os atributos físicos do solo (Martins; Augusto, 2012). Mensurar essas variáveis no início e durante a condução de projetos com essa finalidade pode dar indicativos de ações de manejo necessárias para aumentar as chances de restabelecimento dos processos naturais ou que otimizem o crescimento das espécies utilizadas, especialmente quando se almeja o manejo econômico das mesmas. A densidade do solo e distribuição de poros, por exemplo, são atributos de fácil mensuração, que permitem inferências sobre a estrutura do solo e possíveis impedimentos ao crescimento e desenvolvimento de plantas. Solos com maior densidadee porosidade limitada podem vir a limitar o desenvolvimento satisfatório, já que interferem na dinâmica de água, nutrientes e crescimento radicular (Reichert et al., 2003). O objetivo do presente estudo foi avaliar a porosidade total, macroporos, microporos e densidade do solo de áreas sobre diferentes arranjos de restauração florestal.
650 $aCapilaridade
650 $aFísica do solo
650 $aPorosidade
653 $aDensidade do solo
653 $aMacroporo
653 $aMicroporo
653 $aRestauração florestal
653 $aSinop-MT
700 1 $aMATOS, E. da S.
700 1 $aSOUZA, L. H. C.
700 1 $aMEDEIROS, A. L.
700 1 $aFERREIRA, J. M.
700 1 $aISERNHAGEN, I.
700 1 $aMAGALHÃES, C. A. de S.
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Embrapa Agrossilvipastoril (CPAMT) |
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