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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
31/01/2022 |
Data da última atualização: |
31/01/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BARBOSA, I. P.; CESTARO, J. P.; SILVA, S. A.; NOLETO, G. S.; GONÇALVES, R. L.; SILVA, G. M.; PAES, F. H.; GASPERIN, B. G.; ROVANI, M. T.; PFEIFER, L. F. M. |
Afiliação: |
INGRID P. BARBOSA, Universidade Federal do Acre (Ufac); JAMYLE P. CESTARO, Universidade Federal do Acre (Ufac); SAMIRA A. SILVA, Centro Universitario Aparício Carvalho (FIMCA); GABRIELLY S. NOLETO, Centro Universitario Aparício Carvalho (FIMCA); REUEL L. GONÇALVES, Biogênesis Bago Saúde Animal, Curitiba, PR; GEORGE M. SILVA, Universidade Federal de Rondonia (UNIR); FELIPE H. PAES, Centro Universitario Aparício Carvalho (FIMCA); BERNARDO G. GASPERIN, Universidade Federal de Pelotas (Ufpel); MONIQUE T. ROVANI, Universidade Federal do Rio Grande do Sul (UFRGS); LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO. |
Título: |
GnRH34: an alternative for increasing pregnancy in timed AI beef cows. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Theriogenology, v. 179, p. 1-254, Feb. 2022. |
ISSN: |
0093-691X |
DOI: |
https://doi.org/10.1016/j.theriogenology.2021.11.014 |
Idioma: |
Inglês |
Conteúdo: |
Two experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have occurred in cows without a tail-head chalk mark (>75% paint loss). Cows treated with GnRH 34 h after P4 insert removal had greater (P = 0.01) pregnancy per AI (P/AI) than cows that only received ECP (63.0% and 50.4%). No difference (P = 0.5) was observed in the proportion of cows that displayed estrus between treatments. Furthermore, cows that displayed estrus had greater (P < 0.01) P/AI than cows that did not. Treatment with GnRH, given at 34 h after P4 insert removal, increased (P < 0.05) P/AI in cows that did not show estrus at TAI. In summary, treatment with GnRH 34 h after P4 insert removal was associated with earlier ovulation and resulted in greater P/AI in suckled Nelore cows treated with an estradiol/P4-based protocol for TAI. MenosTwo experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have oc... Mostrar Tudo |
Palavras-Chave: |
Gonadotropina. |
Thesagro: |
Fertilidade Animal; Gado de Corte; Gado Nelore; Hormônio; Inseminação Artificial; Ovulação; Reprodução Animal; Vaca de Corte. |
Thesaurus Nal: |
Animal fertility; Animal reproduction; Artificial insemination; Beef cattle; Beef cows; Gonadotropin-releasing hormone; Nellore; Ovulation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 03532naa a2200457 a 4500 001 2139488 005 2022-01-31 008 2022 bl uuuu u00u1 u #d 022 $a0093-691X 024 7 $ahttps://doi.org/10.1016/j.theriogenology.2021.11.014$2DOI 100 1 $aBARBOSA, I. P. 245 $aGnRH34$ban alternative for increasing pregnancy in timed AI beef cows.$h[electronic resource] 260 $c2022 520 $aTwo experiments evaluated the effects of gonadotropin releasing hormone (GnRH) treatment on fertility of suckled Nelore beef cows treated with an estradiol/progesterone (P4)-based protocol for timed artificial insemination (TAI). Experiment 1 was designed to determine the effect of GnRH administered 34 h after P4 insert removal (GnRH34) on time of ovulation. Suckled cows (n = 34) were treated with 2 mg estradiol benzoate (EB) and an intravaginal insert containing 1.9 g of P4. Eight days later, P4 inserts were removed, and all cows received 150 ug of d-cloprostenol (prostaglandin F2 alpha analogue), 300 IU of eCG, and 1 mg of estradiol cypionate (ECP). On Day 9 (05:00 p.m.), cows were randomly distributed, according to the diameter of the pre-ovulatory follicle, in two treatments: 1) GnRH (n = 17) cows that received 10.5 ug of buserelin acetate, or 2) no further treatment (control, n = 17). Cows treated with GnRH 34 h after P4 insert removal ovulated earlier (P = 0.02) than control cows (66 ± 0.0 and 77.2 ± 4.3 h). Experiment 2 was designed to determine the effect of GnRH34 on the fertility of suckled beef cows. Nelore cows (n = 506) were treated as Experiment 1. On Day 8, cows were painted in the sacrocaudal region to identify cows that displayed estrus. On Day 9 (05:00 p.m.), cows were randomized to receive same treatment as Experiment 1, control (n = 252), or GnRH (n = 254). All cows were TAI 48 h after P4 insert removal. At TAI, estrus was evaluated, and deemed to have occurred in cows without a tail-head chalk mark (>75% paint loss). Cows treated with GnRH 34 h after P4 insert removal had greater (P = 0.01) pregnancy per AI (P/AI) than cows that only received ECP (63.0% and 50.4%). No difference (P = 0.5) was observed in the proportion of cows that displayed estrus between treatments. Furthermore, cows that displayed estrus had greater (P < 0.01) P/AI than cows that did not. Treatment with GnRH, given at 34 h after P4 insert removal, increased (P < 0.05) P/AI in cows that did not show estrus at TAI. In summary, treatment with GnRH 34 h after P4 insert removal was associated with earlier ovulation and resulted in greater P/AI in suckled Nelore cows treated with an estradiol/P4-based protocol for TAI. 650 $aAnimal fertility 650 $aAnimal reproduction 650 $aArtificial insemination 650 $aBeef cattle 650 $aBeef cows 650 $aGonadotropin-releasing hormone 650 $aNellore 650 $aOvulation 650 $aFertilidade Animal 650 $aGado de Corte 650 $aGado Nelore 650 $aHormônio 650 $aInseminação Artificial 650 $aOvulação 650 $aReprodução Animal 650 $aVaca de Corte 653 $aGonadotropina 700 1 $aCESTARO, J. P. 700 1 $aSILVA, S. A. 700 1 $aNOLETO, G. S. 700 1 $aGONÇALVES, R. L. 700 1 $aSILVA, G. M. 700 1 $aPAES, F. H. 700 1 $aGASPERIN, B. G. 700 1 $aROVANI, M. T. 700 1 $aPFEIFER, L. F. M. 773 $tTheriogenology$gv. 179, p. 1-254, Feb. 2022.
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Embrapa Rondônia (CPAF-RO) |
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Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
03/04/2014 |
Data da última atualização: |
19/02/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
PONTES, N. de C.; AGUIAR, F. M.; BOITEUX, L. S.; LIMA, M. L. P.; OLIVEIRA, V. R.; CAFÉ FILHO, A. C.; REIS, A. |
Afiliação: |
NADSON DE C. PONTES, INSTITUTO FEDERAL GOIANO; FREDERICK M. AGUIAR, DEPARTAMENTO DE FITOSSANIDADE. UNIVERSIDADE DE BRASÍLIA; LEONARDO SILVA BOITEUX, CNPH; MILTON L. P. LIMA, INSTITUTO FEDERAL GOIANO; VALTER RODRIGUES OLIVEIRA, CNPH; ADALBERTO C. CAFÉ FILHO, DEPARTAMENTO DE FITOPATOLOGIA. UNIVERSIDADE DE BRASÍLIA; AILTON REIS, CNPH. |
Título: |
Identification of sources of seedling resistance to Phytophthora capsici in Cucumis melo. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Tropical Plant Pathology, Brasília, DF, v. 39, n. 1, p. 674-681, Jan./Feb. 2014 |
Idioma: |
Inglês |
Palavras-Chave: |
Melon. |
Thesagro: |
Doença de planta; Melão; Melhoramento genético vegetal; Phytophthora Capsici; Variedade resistente. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/100558/1/09.pdf
|
Marc: |
LEADER 00786naa a2200253 a 4500 001 1983902 005 2015-02-19 008 2014 bl uuuu u00u1 u #d 100 1 $aPONTES, N. de C. 245 $aIdentification of sources of seedling resistance to Phytophthora capsici in Cucumis melo.$h[electronic resource] 260 $c2014 650 $aDoença de planta 650 $aMelão 650 $aMelhoramento genético vegetal 650 $aPhytophthora Capsici 650 $aVariedade resistente 653 $aMelon 700 1 $aAGUIAR, F. M. 700 1 $aBOITEUX, L. S. 700 1 $aLIMA, M. L. P. 700 1 $aOLIVEIRA, V. R. 700 1 $aCAFÉ FILHO, A. C. 700 1 $aREIS, A. 773 $tTropical Plant Pathology, Brasília, DF$gv. 39, n. 1, p. 674-681, Jan./Feb. 2014
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