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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
29/06/2023 |
Data da última atualização: |
18/07/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA, S. A.; MONDADORI, R. G.; NOLETO, G. S.; BARBOSA, I. P.; GONÇALVES, R. L.; GASPERIN, B. G.; ROVANI, M. T.; PAZ, E. F.; GOMES, L. S.; PFEIFER, L. F. M. |
Afiliação: |
SAMIRA A. SILVA, UNIVERSIDADE FEDERAL DE PELOTAS; RAFAEL G. MONDADORI, UNIVERSIDADE FEDERAL DE PELOTAS; GABRIELLY S. NOLETO, UNIVERSIDADE FEDERAL DE RONDÔNIA; INGRID P. BARBOSA, UNIVERSIDADE FEDERAL DO ACRE; REUEL L. GONÇALVES, BIOGENESIS BAGO SAÚDE ANIMAL; BERNARDO G. GASPERIN, UNIVERSIDADE FEDERAL DE PELOTAS; MONIQUE T. ROVANI, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL; EANES F. PAZ, ASSITÊNCIA TÉCNICA E EXTENSÃO RURAL; LEONARDO S. GOMES, Embrapa Rondônia; LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO. |
Título: |
GnRH34 with or without estradiol cypionate in timed AI in Bos indicus beef cows. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Theriogenology, v. 209, p. 134-140, 2023. |
ISSN: |
0093-691X |
DOI: |
https://doi.org/10.1016/j.theriogenology.2023.06.026 |
Idioma: |
Inglês |
Conteúdo: |
Two experiments were performed to evaluate the effects of GnRH treatment on the fertility of suckled Nelore beef cows treated with an estradiol/progesterone (E2/P4)-based protocol for timed artificial insemination (TAI). Experiment 1 focused on determining the effects of estradiol cypionate (EC) on ovulation in TAI cows treated with GnRH 34 h after removal of the intravaginal P4 device (IPD). Suckled cows (n ¼ 26) were treated with 2 mg estradiol benzoate (EB) and IPD containing 1 g P4. After 8 days, IPDs were removed, and all cows were treated with 150 mg of d-cloprostenol (prostaglandin F2 alpha analog) and 300 IU of equine chorionic gonadotropin (eCG), then separated into two treatment groups consisting of cows who received 1) saline 0.9% i.m. (GnRH34 group) or 2) 0.6 mg i.m. of EC (EC-GnRH34 group). On day 9 (05:00 p.m.), all cows were given GnRH (10.5 mg of buserelin acetate) i.m. No differences were observed between the groups (P > 0.05) in the time of ovulation after IPD removal or in the proportion of cows ovulating. Experiment 2 focused on determining the effects of GnRH34 along with or in the absence of EC on day 8 on pregnancy per AI (P/AI) in postpartum beef cows. Cows (n ¼ 981) were treated similarly to those in Experiment 1, but an additional group, the EC-GnRH48 group, was included, in which cows received EC on day 8 whereas those that did not show estrus received GnRH at TAI. Thus, in this experiment, groups consisted of GnRH34 (n ¼ 322), EC-GnRH34 (n ¼ 335), and EC-GnRH48 (n ¼ 324). A higher rate of estrus expression was observed in cows treated with EC following IPD removal (EC-GnRH34: 69%, EC-GnRH48: 64.8%) than in cows in the GnRH34 group (45.6%). No difference in P/AI was observed between the treatment groups (P ¼ 0.45), but P/AI in cows in the EC-GnRH34 group (64.2%) tended to be greater (P ¼ 0.1) than in cows in the GnRH34 group (58%). In summary, although ovulation synchrony did not differ among the groups, P/AI in cows treated with EC and GnRH 34 h after IPD removal tended to be greater than in cows treated solely with GnRH; this was most likely due to a shorter proestrus/estrus period, considering the lower proportion of cows that displayed estrus in the GnRH34 group. Finally, given that P/AI did not differ between the EC-GnRH34 and EC-GnRH48 groups, our results suggest that, for cows not displaying estrus, administration of EC at the time of IPD removal followed by treatment with GnRH 48 h afterward represents the most cost-efficient TAI strategy for South American Zebu-based beef operations. MenosTwo experiments were performed to evaluate the effects of GnRH treatment on the fertility of suckled Nelore beef cows treated with an estradiol/progesterone (E2/P4)-based protocol for timed artificial insemination (TAI). Experiment 1 focused on determining the effects of estradiol cypionate (EC) on ovulation in TAI cows treated with GnRH 34 h after removal of the intravaginal P4 device (IPD). Suckled cows (n ¼ 26) were treated with 2 mg estradiol benzoate (EB) and IPD containing 1 g P4. After 8 days, IPDs were removed, and all cows were treated with 150 mg of d-cloprostenol (prostaglandin F2 alpha analog) and 300 IU of equine chorionic gonadotropin (eCG), then separated into two treatment groups consisting of cows who received 1) saline 0.9% i.m. (GnRH34 group) or 2) 0.6 mg i.m. of EC (EC-GnRH34 group). On day 9 (05:00 p.m.), all cows were given GnRH (10.5 mg of buserelin acetate) i.m. No differences were observed between the groups (P > 0.05) in the time of ovulation after IPD removal or in the proportion of cows ovulating. Experiment 2 focused on determining the effects of GnRH34 along with or in the absence of EC on day 8 on pregnancy per AI (P/AI) in postpartum beef cows. Cows (n ¼ 981) were treated similarly to those in Experiment 1, but an additional group, the EC-GnRH48 group, was included, in which cows received EC on day 8 whereas those that did not show estrus received GnRH at TAI. Thus, in this experiment, groups consisted of GnRH34 (n ¼ 322), EC-GnRH34 (n ¼ 335),... Mostrar Tudo |
Palavras-Chave: |
Amazônia Ocidental; Embrapa Rondôna; Western Amazon. |
Thesagro: |
Bos Indicus; Campo Experimental; Estradiol; Fertilidade Animal; Gado Nelore; Hormônio; Ovulação; Prenhez; Reprodução Animal; Vaca de Corte. |
Thesaurus Nal: |
Animal fertility; Animal reproduction; Beef cows; Demonstration farms; Hormones; Nellore; Ovulation; Pregnancy. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154705/1/cpafro-18957.pdf
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Marc: |
LEADER 03947naa a2200505 a 4500 001 2154705 005 2023-07-18 008 2023 bl uuuu u00u1 u #d 022 $a0093-691X 024 7 $ahttps://doi.org/10.1016/j.theriogenology.2023.06.026$2DOI 100 1 $aSILVA, S. A. 245 $aGnRH34 with or without estradiol cypionate in timed AI in Bos indicus beef cows.$h[electronic resource] 260 $c2023 520 $aTwo experiments were performed to evaluate the effects of GnRH treatment on the fertility of suckled Nelore beef cows treated with an estradiol/progesterone (E2/P4)-based protocol for timed artificial insemination (TAI). Experiment 1 focused on determining the effects of estradiol cypionate (EC) on ovulation in TAI cows treated with GnRH 34 h after removal of the intravaginal P4 device (IPD). Suckled cows (n ¼ 26) were treated with 2 mg estradiol benzoate (EB) and IPD containing 1 g P4. After 8 days, IPDs were removed, and all cows were treated with 150 mg of d-cloprostenol (prostaglandin F2 alpha analog) and 300 IU of equine chorionic gonadotropin (eCG), then separated into two treatment groups consisting of cows who received 1) saline 0.9% i.m. (GnRH34 group) or 2) 0.6 mg i.m. of EC (EC-GnRH34 group). On day 9 (05:00 p.m.), all cows were given GnRH (10.5 mg of buserelin acetate) i.m. No differences were observed between the groups (P > 0.05) in the time of ovulation after IPD removal or in the proportion of cows ovulating. Experiment 2 focused on determining the effects of GnRH34 along with or in the absence of EC on day 8 on pregnancy per AI (P/AI) in postpartum beef cows. Cows (n ¼ 981) were treated similarly to those in Experiment 1, but an additional group, the EC-GnRH48 group, was included, in which cows received EC on day 8 whereas those that did not show estrus received GnRH at TAI. Thus, in this experiment, groups consisted of GnRH34 (n ¼ 322), EC-GnRH34 (n ¼ 335), and EC-GnRH48 (n ¼ 324). A higher rate of estrus expression was observed in cows treated with EC following IPD removal (EC-GnRH34: 69%, EC-GnRH48: 64.8%) than in cows in the GnRH34 group (45.6%). No difference in P/AI was observed between the treatment groups (P ¼ 0.45), but P/AI in cows in the EC-GnRH34 group (64.2%) tended to be greater (P ¼ 0.1) than in cows in the GnRH34 group (58%). In summary, although ovulation synchrony did not differ among the groups, P/AI in cows treated with EC and GnRH 34 h after IPD removal tended to be greater than in cows treated solely with GnRH; this was most likely due to a shorter proestrus/estrus period, considering the lower proportion of cows that displayed estrus in the GnRH34 group. Finally, given that P/AI did not differ between the EC-GnRH34 and EC-GnRH48 groups, our results suggest that, for cows not displaying estrus, administration of EC at the time of IPD removal followed by treatment with GnRH 48 h afterward represents the most cost-efficient TAI strategy for South American Zebu-based beef operations. 650 $aAnimal fertility 650 $aAnimal reproduction 650 $aBeef cows 650 $aDemonstration farms 650 $aHormones 650 $aNellore 650 $aOvulation 650 $aPregnancy 650 $aBos Indicus 650 $aCampo Experimental 650 $aEstradiol 650 $aFertilidade Animal 650 $aGado Nelore 650 $aHormônio 650 $aOvulação 650 $aPrenhez 650 $aReprodução Animal 650 $aVaca de Corte 653 $aAmazônia Ocidental 653 $aEmbrapa Rondôna 653 $aWestern Amazon 700 1 $aMONDADORI, R. G. 700 1 $aNOLETO, G. S. 700 1 $aBARBOSA, I. P. 700 1 $aGONÇALVES, R. L. 700 1 $aGASPERIN, B. G. 700 1 $aROVANI, M. T. 700 1 $aPAZ, E. F. 700 1 $aGOMES, L. S. 700 1 $aPFEIFER, L. F. M. 773 $tTheriogenology$gv. 209, p. 134-140, 2023.
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Embrapa Rondônia (CPAF-RO) |
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Registro Completo
Biblioteca(s): |
Embrapa Trigo. |
Data corrente: |
22/01/2013 |
Data da última atualização: |
22/01/2013 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
BAVIA, A. C. F.; SILVA, C. E. da; FERREIRA, M. P.; LEITE, R. S.; LEITE, R. S.; MANDARINO, J. M. G.; CARRÃO-PANIZZI, M. C. |
Afiliação: |
ANA CARLA FURLAN BAVIA; CARLOS EDUARDO DA SILVA; MÁRCIA PIRES FERREIRA; RODRIGO SANTOS LEITE; RODRIGO SANTOS LEITE, CNPSO; JOSE MARCOS GONTIJO MANDARINO, CNPSO; MERCEDES CONCORDIA CARRAO PANIZZI, CNPT. |
Título: |
Chemical composition of tempeh from soybean cultivars specially developed for human consumption. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Ciência e Tecnologia de Alimentos, Campinas, v. 32, n. 3, p. 613-620, jul./set. 2012. |
ISSN: |
0101-2061 |
DOI: |
http://dx.doi.org/10.1590/S0101-20612012005000085 |
Idioma: |
Inglês |
Palavras-Chave: |
Alimento funcional; Fatores antinutricionais; Functional food; Isoflavonas; Protein; Soybean. |
Thesagro: |
Proteína; Soja. |
Thesaurus NAL: |
antinutritional factors; isoflavones. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/75044/1/2012cienciatecnologiaalimentosv32n3p613.pdf
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Marc: |
LEADER 01007naa a2200325 a 4500 001 1946039 005 2013-01-22 008 2012 bl uuuu u00u1 u #d 022 $a0101-2061 024 7 $ahttp://dx.doi.org/10.1590/S0101-20612012005000085$2DOI 100 1 $aBAVIA, A. C. F. 245 $aChemical composition of tempeh from soybean cultivars specially developed for human consumption.$h[electronic resource] 260 $c2012 650 $aantinutritional factors 650 $aisoflavones 650 $aProteína 650 $aSoja 653 $aAlimento funcional 653 $aFatores antinutricionais 653 $aFunctional food 653 $aIsoflavonas 653 $aProtein 653 $aSoybean 700 1 $aSILVA, C. E. da 700 1 $aFERREIRA, M. P. 700 1 $aLEITE, R. S. 700 1 $aLEITE, R. S. 700 1 $aMANDARINO, J. M. G. 700 1 $aCARRÃO-PANIZZI, M. C. 773 $tCiência e Tecnologia de Alimentos, Campinas$gv. 32, n. 3, p. 613-620, jul./set. 2012.
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