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Registro Completo |
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
31/01/2022 |
Data da última atualização: |
31/01/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
DINIZ, J. V. A.; DELL'AQUA JUNIOR, J. A.; OBA, E.; FREITAS, R. R. de; PEIXOTO, R. M.; SILVA, L. O.; MAIA, G. F. N. M.; CARVALHO, B. P.; LOUREIRO, B.; SATRAPA, R. A. |
Afiliação: |
JEFFERSON VIANA ALVES DINIZ, Universidade Estadual Paulista “Julio Mesquita Filho” (UNESP); JOSÉ ANTONIO DELL'AQUA JUNIOR, Universidade Estadual Paulista ?Julio Mesquita Filho? (UNESP); EUNICE OBA, Universidade Estadual Paulista “Julio Mesquita Filho” (UNESP); ROSANO RAMOS DE FREITAS, Universidade Federal do Acre (UFAC); RENATO MESQUITA PEIXOTO, CNPCO; LAINE OLIVEIRA SILVA, Universidade Federal do Acre (UFAC); GERBSON FRANCISCO NOGUEIRA MAIA, Universidade Federal do Acre (UFAC); BRUNO PENA CARVALHO, CPAF-AC; BÁRBARA LOUREIRO, Universidade de Vila Velha (UVV); RAFAEL AUGUSTO SATRAPA, Universidade Federal do Acre (UFAC). |
Título: |
Influência da progesterona injetável na taxa de prenhez e perda gestacional de fêmeas nelore de distintas categorias reprodutivas submetidas a inseminação artificial em tempo fixo. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Acta Scientiae Veterinariae, v. 49, 1828, 2021. |
ISSN: |
1678-0345 (impresso) / 1679-9216 (online) |
DOI: |
10.22456/1679-9216.113632 |
Idioma: |
Português |
Conteúdo: |
Progesterone (P4) is essential for embryonic development and maintenance of pregnancy when deficiency causes early embryonic loss. In this study, we investigated the ability of hormonal supplementation to improve the fertility of Nellore females subjected to fixed-time artificial insemination (IATF) protocols. Here, we evaluated the effect of long-acting injectable progesterone (iP4) supplementation in the D4 after IATF on pregnancy rate and pregnancy loss in Nellore females (Bos taurus indicus) from different reproductive categories in Western Amazonia. Materials, Methods & Results: Eight hundred thirteen Nellore females from 5 farms were selected and distributed into 2 groups: control [GC; administration of 0.5 mL of 0.9% saline solution, intramuscularly - IM] (n = 407) and a group that received injectable progesterone (iP4) that was long-acting [GiP4; administration of 0.5 mL of iP4, 300 mg, via IM four days after IATF] (n = 406). Each group contained 3 subgroups: heifers, primiparous cows, and multiparous cows. Of the 407 animals in the CG, 103 were heifers, 107 primiparous, and 197 multiparous. Of the 406 animals in the GiP4 group, there were 101 heifers, 107 primiparous, and 198 multiparous. On a random day of the estrous cycle (D0), an intravaginal device containing 1 g of P4 and 2 mg of estradiol benzoate (BE) was inserted by intramuscular injection. On D8, the P4 device was removed and 150 μg of D-cloprostenol (PGF2α), 300 IU eCG, and 1 mg BE were administered IM. Cows were inseminated at D10, 48-52 h after procedure on D8. Pregnancy diagnosis was made between 35 and 40 days after insemination through ultrasound examination. Between 80 and 90 days after insemination, a new ultrasound examination was performed to assess early pregnancy loss. The data were processed using the SAS 9.2. The conception rate, pregnancy loss, and final conception rate were analyzed using PROC GLIMMIX according to groups (CG and GiP4), categories (heifers, primiparous and multiparous), and their interactions as variables. The differences in the means of least squares were adjusted using the Tukey?Kramer method. Statistical significance was defined as P < 0.05. The general conception rate was 46% (375/816). Regardless of the animal class, GiP4 animals (51.97%) had higher conception rates (P < 0.05) than CG (40.29%). In the subgroups (heifers, primiparous and multiparous cows), there was a difference (P < 0.05) between animals treated with iP4 (52.48%, 57.94%, and 48.48%, respectively) and those who were not (39.81%, 41.12%, and 40.10%, respectively). Gestational losses, regardless of the animal class, were higher in females in the CG (7.93%) [P < 0.05] compared to those in the GiP4 group (2.84%). Regardless of treatment with iP4, the percentage of gestational loss in heifers was significantly higher (10.64%) than that in primiparous and multiparous cows (3.77% and 2.86%, respectively). The final conception rates were higher in animals that received long-acting iP4, which increased the final pregnancy in all parity categories. Discussion: In the present study, the use of iP4 increased the pregnancy rate in Nellore females, regardless of the category. Although there has been no consensus on the use of iP4, there is an agreement that increases in the pregnancy rate are related to the moment of exogenous P4 application. In addition to influencing the pregnancy rate, reduction in pregnancy losses is also attributed to iP4 treatment, a fact demonstrated in the present study, where animals treated with iP4 had a lower pregnancy loss rate than normally occurs in beef cattle. Supplementation with long-acting iP4 increased the pregnancy rate at D35-40, reduced pregnancy losses, and increased the conception rate on D80-90 days in Nellore females reared in the Western Amazon, regardless of the animal category. MenosProgesterone (P4) is essential for embryonic development and maintenance of pregnancy when deficiency causes early embryonic loss. In this study, we investigated the ability of hormonal supplementation to improve the fertility of Nellore females subjected to fixed-time artificial insemination (IATF) protocols. Here, we evaluated the effect of long-acting injectable progesterone (iP4) supplementation in the D4 after IATF on pregnancy rate and pregnancy loss in Nellore females (Bos taurus indicus) from different reproductive categories in Western Amazonia. Materials, Methods & Results: Eight hundred thirteen Nellore females from 5 farms were selected and distributed into 2 groups: control [GC; administration of 0.5 mL of 0.9% saline solution, intramuscularly - IM] (n = 407) and a group that received injectable progesterone (iP4) that was long-acting [GiP4; administration of 0.5 mL of iP4, 300 mg, via IM four days after IATF] (n = 406). Each group contained 3 subgroups: heifers, primiparous cows, and multiparous cows. Of the 407 animals in the CG, 103 were heifers, 107 primiparous, and 197 multiparous. Of the 406 animals in the GiP4 group, there were 101 heifers, 107 primiparous, and 198 multiparous. On a random day of the estrous cycle (D0), an intravaginal device containing 1 g of P4 and 2 mg of estradiol benzoate (BE) was inserted by intramuscular injection. On D8, the P4 device was removed and 150 μg of D-cloprostenol (PGF2α), 300 IU eCG, and 1 mg BE were administ... Mostrar Tudo |
Palavras-Chave: |
Fertilidad animal; Ganado de carne; Hormonas progestacionales; Inseminación artificial; Métodos de mejoramiento genético; Ovulación; Reproducción de animales; Vacas para carne. |
Thesagro: |
Fertilidade Animal; Gado de Corte; Gado Nelore; Hormônio; Inseminação Artificial; Ovulação; Prenhez; Progesterona; Reprodução Animal; Vaca de Corte. |
Thesaurus Nal: |
Animal breeding; Animal fertility; Animal reproduction; Artificial insemination; Beef cattle; Beef cows; Breeding methods; Nellore; Ovulation; Progestational hormones; Progesterone. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230718/1/27293.pdf
|
Marc: |
LEADER 05695naa a2200601 a 4500 001 2139496 005 2022-01-31 008 2021 bl uuuu u00u1 u #d 022 $a1678-0345 (impresso) / 1679-9216 (online) 024 7 $a10.22456/1679-9216.113632$2DOI 100 1 $aDINIZ, J. V. A. 245 $aInfluência da progesterona injetável na taxa de prenhez e perda gestacional de fêmeas nelore de distintas categorias reprodutivas submetidas a inseminação artificial em tempo fixo.$h[electronic resource] 260 $c2021 520 $aProgesterone (P4) is essential for embryonic development and maintenance of pregnancy when deficiency causes early embryonic loss. In this study, we investigated the ability of hormonal supplementation to improve the fertility of Nellore females subjected to fixed-time artificial insemination (IATF) protocols. Here, we evaluated the effect of long-acting injectable progesterone (iP4) supplementation in the D4 after IATF on pregnancy rate and pregnancy loss in Nellore females (Bos taurus indicus) from different reproductive categories in Western Amazonia. Materials, Methods & Results: Eight hundred thirteen Nellore females from 5 farms were selected and distributed into 2 groups: control [GC; administration of 0.5 mL of 0.9% saline solution, intramuscularly - IM] (n = 407) and a group that received injectable progesterone (iP4) that was long-acting [GiP4; administration of 0.5 mL of iP4, 300 mg, via IM four days after IATF] (n = 406). Each group contained 3 subgroups: heifers, primiparous cows, and multiparous cows. Of the 407 animals in the CG, 103 were heifers, 107 primiparous, and 197 multiparous. Of the 406 animals in the GiP4 group, there were 101 heifers, 107 primiparous, and 198 multiparous. On a random day of the estrous cycle (D0), an intravaginal device containing 1 g of P4 and 2 mg of estradiol benzoate (BE) was inserted by intramuscular injection. On D8, the P4 device was removed and 150 μg of D-cloprostenol (PGF2α), 300 IU eCG, and 1 mg BE were administered IM. Cows were inseminated at D10, 48-52 h after procedure on D8. Pregnancy diagnosis was made between 35 and 40 days after insemination through ultrasound examination. Between 80 and 90 days after insemination, a new ultrasound examination was performed to assess early pregnancy loss. The data were processed using the SAS 9.2. The conception rate, pregnancy loss, and final conception rate were analyzed using PROC GLIMMIX according to groups (CG and GiP4), categories (heifers, primiparous and multiparous), and their interactions as variables. The differences in the means of least squares were adjusted using the Tukey?Kramer method. Statistical significance was defined as P < 0.05. The general conception rate was 46% (375/816). Regardless of the animal class, GiP4 animals (51.97%) had higher conception rates (P < 0.05) than CG (40.29%). In the subgroups (heifers, primiparous and multiparous cows), there was a difference (P < 0.05) between animals treated with iP4 (52.48%, 57.94%, and 48.48%, respectively) and those who were not (39.81%, 41.12%, and 40.10%, respectively). Gestational losses, regardless of the animal class, were higher in females in the CG (7.93%) [P < 0.05] compared to those in the GiP4 group (2.84%). Regardless of treatment with iP4, the percentage of gestational loss in heifers was significantly higher (10.64%) than that in primiparous and multiparous cows (3.77% and 2.86%, respectively). The final conception rates were higher in animals that received long-acting iP4, which increased the final pregnancy in all parity categories. Discussion: In the present study, the use of iP4 increased the pregnancy rate in Nellore females, regardless of the category. Although there has been no consensus on the use of iP4, there is an agreement that increases in the pregnancy rate are related to the moment of exogenous P4 application. In addition to influencing the pregnancy rate, reduction in pregnancy losses is also attributed to iP4 treatment, a fact demonstrated in the present study, where animals treated with iP4 had a lower pregnancy loss rate than normally occurs in beef cattle. Supplementation with long-acting iP4 increased the pregnancy rate at D35-40, reduced pregnancy losses, and increased the conception rate on D80-90 days in Nellore females reared in the Western Amazon, regardless of the animal category. 650 $aAnimal breeding 650 $aAnimal fertility 650 $aAnimal reproduction 650 $aArtificial insemination 650 $aBeef cattle 650 $aBeef cows 650 $aBreeding methods 650 $aNellore 650 $aOvulation 650 $aProgestational hormones 650 $aProgesterone 650 $aFertilidade Animal 650 $aGado de Corte 650 $aGado Nelore 650 $aHormônio 650 $aInseminação Artificial 650 $aOvulação 650 $aPrenhez 650 $aProgesterona 650 $aReprodução Animal 650 $aVaca de Corte 653 $aFertilidad animal 653 $aGanado de carne 653 $aHormonas progestacionales 653 $aInseminación artificial 653 $aMétodos de mejoramiento genético 653 $aOvulación 653 $aReproducción de animales 653 $aVacas para carne 700 1 $aDELL'AQUA JUNIOR, J. A. 700 1 $aOBA, E. 700 1 $aFREITAS, R. R. de 700 1 $aPEIXOTO, R. M. 700 1 $aSILVA, L. O. 700 1 $aMAIA, G. F. N. M. 700 1 $aCARVALHO, B. P. 700 1 $aLOUREIRO, B. 700 1 $aSATRAPA, R. A. 773 $tActa Scientiae Veterinariae$gv. 49, 1828, 2021.
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Embrapa Acre (CPAF-AC) |
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Registro Completo
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
02/01/1998 |
Data da última atualização: |
05/05/2023 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
ANDRADE, F. G. de; SA, C. P. de; ALMEIDA, N. F. de; NASCIMENTO, G. C. do; CAVALCANTE, F. A.; BENTES, M. P.; OLIVEIRA, J. V. de; MELO, E. da C. |
Afiliação: |
FRANCISCO GOMES DE ANDRADE, CPAF-AC; CLAUDENOR PINHO DE SA, CPAF-AC; NELIO FRAZAO DE ALMEIDA, CPAF-AC; GILBERTO COSTA DO NASCIMENTO, CPAF-AC; FRANCISCO ALOISIO CAVALCANTE, CPAF-AC; MARLENE PANTOJA BENTES, EMATER/AC; JOSÉ VALDECI DE OLIVEIRA, EMATER/AC; EDVALDO DA COSTA MELO, EMATER/AC. |
Título: |
A pecuarização da agricultura familiar: um estudo de caso. |
Ano de publicação: |
1997 |
Fonte/Imprenta: |
Rio Branco, AC: Embrapa CPAF-AC, 1997. |
Páginas: |
3 p. |
Série: |
(Embrapa CPAF-AC. Comunicado técnico, 81). |
ISSN: |
0100-8668 |
Idioma: |
Português |
Conteúdo: |
Diagnostico dos problemas da pecuária na agricultura familiar que entravam o desenvolvimento socioeconômico da comunidade. O estudo da evolução do rebanho bovino evidenciou que 41h e' o limite máximo permitido por lei, o que não e' suficiente para dar sustentabilidade a unidade, com base nos atuais níveis de produção e produtividade gerada por esse subsistema. A compreensão do funcionamento dos subsistemas de produção sugere que a sobrevivência da unidade produtiva no seu todo seja possível mediante a soma das produções agrícolas e pecuária. E ai reside o maior problema dos produtores, pois a peculiarização pelas limitações tecnológicas e' um processo que tende a excluir o subsistema agrícola, e, sem este, a produção pecuária não tem sustentabilidade. |
Palavras-Chave: |
Acre; Agriculture politics; Agroforestería; Amazonia Occidental; Amazônia Ocidental; Aspecto socioeconomico; Associação Progresso; Brasil; Economic situation; Explotación agrícola familiar; Family farming; Ganado; Livestick; Livestrock; Pecuária mista; Placido de Castro; Plácido de Castro (AC); Production; Projeto de colonizacao Pedro Peixoto; Projeto de Colonização Pedro Peixoto (AC); Sistemas agroflorestais (SAF); Uso de la tierra; Western Amazon. |
Thesagro: |
Agricultura; Agricultura familiar; Análise Econômica; Bovino; Desenvolvimento Econômico; Pecuária; Política Agrícola; Produção; Sociologia Econômica; Sociologia Rural; Uso da Terra. |
Thesaurus NAL: |
Agroforestry; Amazonia; cattle; economics; family farms; land use; Livestock; sociology. |
Categoria do assunto: |
-- A Sistemas de Cultivo B Sociologia Rural |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAF-AC/1356/1/comunicado81.pdf
|
Marc: |
LEADER 02804nam a2200733 a 4500 001 1492632 005 2023-05-05 008 1997 bl uuuu u0uu1 u #d 022 $a0100-8668 100 1 $aANDRADE, F. G. de 245 $aA pecuarização da agricultura familiar$bum estudo de caso. 260 $aRio Branco, AC: Embrapa CPAF-AC$c1997 300 $a3 p. 490 $a(Embrapa CPAF-AC. Comunicado técnico, 81). 520 $aDiagnostico dos problemas da pecuária na agricultura familiar que entravam o desenvolvimento socioeconômico da comunidade. O estudo da evolução do rebanho bovino evidenciou que 41h e' o limite máximo permitido por lei, o que não e' suficiente para dar sustentabilidade a unidade, com base nos atuais níveis de produção e produtividade gerada por esse subsistema. A compreensão do funcionamento dos subsistemas de produção sugere que a sobrevivência da unidade produtiva no seu todo seja possível mediante a soma das produções agrícolas e pecuária. E ai reside o maior problema dos produtores, pois a peculiarização pelas limitações tecnológicas e' um processo que tende a excluir o subsistema agrícola, e, sem este, a produção pecuária não tem sustentabilidade. 650 $aAgroforestry 650 $aAmazonia 650 $acattle 650 $aeconomics 650 $afamily farms 650 $aland use 650 $aLivestock 650 $asociology 650 $aAgricultura 650 $aAgricultura familiar 650 $aAnálise Econômica 650 $aBovino 650 $aDesenvolvimento Econômico 650 $aPecuária 650 $aPolítica Agrícola 650 $aProdução 650 $aSociologia Econômica 650 $aSociologia Rural 650 $aUso da Terra 653 $aAcre 653 $aAgriculture politics 653 $aAgroforestería 653 $aAmazonia Occidental 653 $aAmazônia Ocidental 653 $aAspecto socioeconomico 653 $aAssociação Progresso 653 $aBrasil 653 $aEconomic situation 653 $aExplotación agrícola familiar 653 $aFamily farming 653 $aGanado 653 $aLivestick 653 $aLivestrock 653 $aPecuária mista 653 $aPlacido de Castro 653 $aPlácido de Castro (AC) 653 $aProduction 653 $aProjeto de colonizacao Pedro Peixoto 653 $aProjeto de Colonização Pedro Peixoto (AC) 653 $aSistemas agroflorestais (SAF) 653 $aUso de la tierra 653 $aWestern Amazon 700 1 $aSA, C. P. de 700 1 $aALMEIDA, N. F. de 700 1 $aNASCIMENTO, G. C. do 700 1 $aCAVALCANTE, F. A. 700 1 $aBENTES, M. P. 700 1 $aOLIVEIRA, J. V. de 700 1 $aMELO, E. da C.
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