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.

Detalhes bibliográficos
Autor(a) principal: DINIZ, J. V. A.
Data de Publicação: 2021
Outros Autores: 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.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139496
Resumo: 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 &#956;g of D-cloprostenol (PGF2&#945;), 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.
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spelling 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.Reproducción de animalesFertilidad animalGanado de carneVacas para carneOvulaciónInseminación artificialHormonas progestacionalesMétodos de mejoramiento genéticoReprodução AnimalFertilidade AnimalHormônioProgesteronaPrenhezGado de CorteGado NeloreVaca de CorteOvulaçãoInseminação ArtificialProgestational hormonesAnimal breedingBreeding methodsProgesteroneAnimal reproductionAnimal fertilityBeef cattleBeef cowsNelloreOvulationArtificial inseminationProgesterone (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 &#956;g of D-cloprostenol (PGF2&#945;), 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.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, CNPCOLAINE OLIVEIRA SILVA, Universidade Federal do Acre (UFAC)GERBSON FRANCISCO NOGUEIRA MAIA, Universidade Federal do Acre (UFAC)BRUNO PENA CARVALHO, CPAF-ACBÁRBARA LOUREIRO, Universidade de Vila Velha (UVV)RAFAEL AUGUSTO SATRAPA, Universidade Federal do Acre (UFAC).DINIZ, J. V. A.DELL'AQUA JUNIOR, J. A.OBA, E.FREITAS, R. R. dePEIXOTO, R. M.SILVA, L. O.MAIA, G. F. N. M.CARVALHO, B. P.LOUREIRO, B.SATRAPA, R. A.2022-01-31T16:01:19Z2022-01-31T16:01:19Z2022-01-312021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleActa Scientiae Veterinariae, v. 49, 1828, 2021.1678-0345 (impresso) / 1679-9216 (online)http://www.alice.cnptia.embrapa.br/alice/handle/doc/113949610.22456/1679-9216.113632porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-01-31T16:01:28Zoai:www.alice.cnptia.embrapa.br:doc/1139496Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-01-31T16:01:28falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-01-31T16:01:28Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv 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.
title 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.
spellingShingle 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.
DINIZ, J. V. A.
Reproducción de animales
Fertilidad animal
Ganado de carne
Vacas para carne
Ovulación
Inseminación artificial
Hormonas progestacionales
Métodos de mejoramiento genético
Reprodução Animal
Fertilidade Animal
Hormônio
Progesterona
Prenhez
Gado de Corte
Gado Nelore
Vaca de Corte
Ovulação
Inseminação Artificial
Progestational hormones
Animal breeding
Breeding methods
Progesterone
Animal reproduction
Animal fertility
Beef cattle
Beef cows
Nellore
Ovulation
Artificial insemination
title_short 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.
title_full 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.
title_fullStr 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.
title_full_unstemmed 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.
title_sort 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.
author DINIZ, J. V. A.
author_facet 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.
author_role author
author2 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.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv 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).
dc.contributor.author.fl_str_mv 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.
dc.subject.por.fl_str_mv Reproducción de animales
Fertilidad animal
Ganado de carne
Vacas para carne
Ovulación
Inseminación artificial
Hormonas progestacionales
Métodos de mejoramiento genético
Reprodução Animal
Fertilidade Animal
Hormônio
Progesterona
Prenhez
Gado de Corte
Gado Nelore
Vaca de Corte
Ovulação
Inseminação Artificial
Progestational hormones
Animal breeding
Breeding methods
Progesterone
Animal reproduction
Animal fertility
Beef cattle
Beef cows
Nellore
Ovulation
Artificial insemination
topic Reproducción de animales
Fertilidad animal
Ganado de carne
Vacas para carne
Ovulación
Inseminación artificial
Hormonas progestacionales
Métodos de mejoramiento genético
Reprodução Animal
Fertilidade Animal
Hormônio
Progesterona
Prenhez
Gado de Corte
Gado Nelore
Vaca de Corte
Ovulação
Inseminação Artificial
Progestational hormones
Animal breeding
Breeding methods
Progesterone
Animal reproduction
Animal fertility
Beef cattle
Beef cows
Nellore
Ovulation
Artificial insemination
description 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 &#956;g of D-cloprostenol (PGF2&#945;), 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.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022-01-31T16:01:19Z
2022-01-31T16:01:19Z
2022-01-31
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Acta Scientiae Veterinariae, v. 49, 1828, 2021.
1678-0345 (impresso) / 1679-9216 (online)
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139496
10.22456/1679-9216.113632
identifier_str_mv Acta Scientiae Veterinariae, v. 49, 1828, 2021.
1678-0345 (impresso) / 1679-9216 (online)
10.22456/1679-9216.113632
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139496
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