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| 3. |  | VIEIRA, D. L. M.; RODRIGUES, S. B.; JAKOVAC, C. C.; ROCHA, G. P. E. da; REIS, F.; BORGES, A. Active restoration initiates high quality forest succession in a deforested landscape in Amazonia. Forests, v. 12, n. 8, 1022, 2021.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 4. | | VIEIRA, D. L. M.; SILVA, R. R. P.; ROCHA, G. P. E. DA; FERNANDES, M. H.; WALTER, B. M. T. Utilização de material de supressão de cerrado (Stricto Sensu) para resgatar e restaurar populações de plantas nativas. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2012. 1 CD-ROM.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
18/09/2018 |
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Data da última atualização: |
18/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
PFEIFER, L. F. M.; RPDRIGUES, W. B.; SILVA, K. C. da; ANACHE, N. A.; CASTRO, N. A.; CASTILHO, E. M.; NOGUEIRA, E. |
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Afiliação: |
LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO; Walvonvitis Baes Rodrigues, Fundaçao de Apoio ao Desenvolvimento do Ensino, Ci ~ ^encia e Tecnologia do Estado do Mato Grosso do Sul; Karine Casanova da Silva, Programa de Pos-Graduaç ! ao em Ci ~ ^encias Veterinarias, UFMS - Universidade Federal de Mato Grosso do Sul; Natalia Albanese Anache, Programa de Pos-Graduaç ! ao em Ci ~ ^encias Veterinarias, UFMS - Universidade Federal de Mato Grosso do Sul; Natalia Avila Castro, Universidade Federal de Pelotas; Eduardo Madeira Castilho, Universidade Federal de Pelotas; ERIKLIS NOGUEIRA, CPAP. |
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Título: |
Different protocols using PGF2a as ovulation inducer in Nelore cows subjected to estradiol-progesterone timed AI based protocols. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Theriogenology, v. 120, p. 56-60, 2018. |
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DOI: |
https://doi.org/10.1016/j.theriogenology.2018.06.030 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate the effect of a PGF2α-analogue (PGF) on ovulation and pregnancy rates after timed artificial insemination (TAI) in cattle. In Experiment 1 cows received an intravaginal progesterone-releasing device (CIDR) plus 2 mg im of estradiol benzoate (EB) on Day 0. The CIDR devices were removed on Day 8, and all cows received 150 μg im of d-cloprostenol (PGF2α-analogue), 300 IU of eCG and 1 mg of estradiol cypionate (ECP) im. On Day 9, cows were randomly assigned into two groups: 1) ECP Group (n = 17), that did not receive any further treatment; and 2) ECP-PG Group (n = 14) that were given 150 μg of d-cloprostenol (PGF) as adjuvant stimulus for ovulation. No difference between groups was detected in interval for ovulation (P = 0.5), and in the proportion of cows ovulating (P = 0.09). In Experiment 2, multiparous suckling crossbred Aberdeen Angus cows (n = 260), were treated into two groups, similarly as Experiment 1; ECP group (n = 122), and ECP-PG group (n = 138). All females were TAI on Day 10. The proportion of cows treated with ECP that became pregnant was 54.9% (67/122), and cows treated with ECP plus PGF was 55.1% (76/138; P = 0.9). In Experiment 3, 686 Nelore cows, 40 to 50 days postpartum, were treated as Experiment 1 (ECP group), however, on Day 8 cows were divided into 3 groups: ECP Group (n = 216); PGF-SC Group (n = 228), in which cows did not receive ECP and were given an additional subcutaneous injection of PGF on Day 8; and PGF-IM Group (n = 242), in which cows also did not receive ECP on Day 8 and were given an additional injection of PGF im on Day 9. On Day 10, estrus was evaluated at timed AI (TAI). There was no difference in the diameter of the dominant follicle at CIDR removal and at TAI, and pregnancy per AI among groups (P > 0.05). However, the proportion of cows that displayed estrus between CIDR removal and TAI was higher in ECP group than in PGF-SC and PGF-IM groups (P < 0.001). Cows that displayed estrus has higher P/AI than cows that did not (P = 0.008). In conclusion, these results suggested that intramuscular or subcutaneous injection of PGF2α could be successfully used to induce ovulation in cattle undergoing TAI, with similar pregnancy rates when compared with ECP. The subcutaneous injection of PGF on the same day of CIDR removal could be an interesting alternative due it reduces cattle management to obtain similar results. MenosThe objective of this study was to evaluate the effect of a PGF2α-analogue (PGF) on ovulation and pregnancy rates after timed artificial insemination (TAI) in cattle. In Experiment 1 cows received an intravaginal progesterone-releasing device (CIDR) plus 2 mg im of estradiol benzoate (EB) on Day 0. The CIDR devices were removed on Day 8, and all cows received 150 μg im of d-cloprostenol (PGF2α-analogue), 300 IU of eCG and 1 mg of estradiol cypionate (ECP) im. On Day 9, cows were randomly assigned into two groups: 1) ECP Group (n = 17), that did not receive any further treatment; and 2) ECP-PG Group (n = 14) that were given 150 μg of d-cloprostenol (PGF) as adjuvant stimulus for ovulation. No difference between groups was detected in interval for ovulation (P = 0.5), and in the proportion of cows ovulating (P = 0.09). In Experiment 2, multiparous suckling crossbred Aberdeen Angus cows (n = 260), were treated into two groups, similarly as Experiment 1; ECP group (n = 122), and ECP-PG group (n = 138). All females were TAI on Day 10. The proportion of cows treated with ECP that became pregnant was 54.9% (67/122), and cows treated with ECP plus PGF was 55.1% (76/138; P = 0.9). In Experiment 3, 686 Nelore cows, 40 to 50 days postpartum, were treated as Experiment 1 (ECP group), however, on Day 8 cows were divided into 3 groups: ECP Group (n = 216); PGF-SC Group (n = 228), in which cows did not receive ECP and were given an additional subcutaneous injection of P... Mostrar Tudo |
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Palavras-Chave: |
Gametes; Ovulação animal. |
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Thesagro: |
Reprodução Animal. |
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Thesaurus NAL: |
Beef; Beef cattle; Ovulation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183192/1/THE-2018-PGF-IM-SC-IATF.pdf
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Marc: |
LEADER 03306naa a2200277 a 4500
001 2095965
005 2018-09-18
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.theriogenology.2018.06.030$2DOI
100 1 $aPFEIFER, L. F. M.
245 $aDifferent protocols using PGF2a as ovulation inducer in Nelore cows subjected to estradiol-progesterone timed AI based protocols.$h[electronic resource]
260 $c2018
520 $aThe objective of this study was to evaluate the effect of a PGF2α-analogue (PGF) on ovulation and pregnancy rates after timed artificial insemination (TAI) in cattle. In Experiment 1 cows received an intravaginal progesterone-releasing device (CIDR) plus 2 mg im of estradiol benzoate (EB) on Day 0. The CIDR devices were removed on Day 8, and all cows received 150 μg im of d-cloprostenol (PGF2α-analogue), 300 IU of eCG and 1 mg of estradiol cypionate (ECP) im. On Day 9, cows were randomly assigned into two groups: 1) ECP Group (n = 17), that did not receive any further treatment; and 2) ECP-PG Group (n = 14) that were given 150 μg of d-cloprostenol (PGF) as adjuvant stimulus for ovulation. No difference between groups was detected in interval for ovulation (P = 0.5), and in the proportion of cows ovulating (P = 0.09). In Experiment 2, multiparous suckling crossbred Aberdeen Angus cows (n = 260), were treated into two groups, similarly as Experiment 1; ECP group (n = 122), and ECP-PG group (n = 138). All females were TAI on Day 10. The proportion of cows treated with ECP that became pregnant was 54.9% (67/122), and cows treated with ECP plus PGF was 55.1% (76/138; P = 0.9). In Experiment 3, 686 Nelore cows, 40 to 50 days postpartum, were treated as Experiment 1 (ECP group), however, on Day 8 cows were divided into 3 groups: ECP Group (n = 216); PGF-SC Group (n = 228), in which cows did not receive ECP and were given an additional subcutaneous injection of PGF on Day 8; and PGF-IM Group (n = 242), in which cows also did not receive ECP on Day 8 and were given an additional injection of PGF im on Day 9. On Day 10, estrus was evaluated at timed AI (TAI). There was no difference in the diameter of the dominant follicle at CIDR removal and at TAI, and pregnancy per AI among groups (P > 0.05). However, the proportion of cows that displayed estrus between CIDR removal and TAI was higher in ECP group than in PGF-SC and PGF-IM groups (P < 0.001). Cows that displayed estrus has higher P/AI than cows that did not (P = 0.008). In conclusion, these results suggested that intramuscular or subcutaneous injection of PGF2α could be successfully used to induce ovulation in cattle undergoing TAI, with similar pregnancy rates when compared with ECP. The subcutaneous injection of PGF on the same day of CIDR removal could be an interesting alternative due it reduces cattle management to obtain similar results.
650 $aBeef
650 $aBeef cattle
650 $aOvulation
650 $aReprodução Animal
653 $aGametes
653 $aOvulação animal
700 1 $aRPDRIGUES, W. B.
700 1 $aSILVA, K. C. da
700 1 $aANACHE, N. A.
700 1 $aCASTRO, N. A.
700 1 $aCASTILHO, E. M.
700 1 $aNOGUEIRA, E.
773 $tTheriogenology$gv. 120, p. 56-60, 2018.
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