Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Research, Society and Development |
Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/8897 |
Resumo: | This study aimed to evaluate the influence of medroxyprogesterone acetate (MGA) supplementation between the 13th and 20th day after Fixed-Time-Artificial Insemination (FTAI), on the conception and gestation rates of Nellore and crossbred cows (Nellore x Angus), pluriparous and lactating. For the study, 349 Nellore cows and 270 crossbred cows were selected, distributed into 1) group G1 (n=176): Nellore cows submitted to the FTAI protocol, without MGA supplementation; 2) group G2 (n=173): Nellore cows submitted to the FTAI protocol, with supplementation for 7 days of MGA® (0.28g/AU/day) from the 13th post-FTAI; 3) group G3 (n=119): crossbred cows: FTAI protocol, without MGA supplementation; 4) group G4 (n=151): crossbred cows: FTAI protocol followed by MGA supplementation for 7 days (0.28g/AU/day), from the 13th to the 20th day after FTAI. For statistical analysis, the procedures MIXED and GLIMMIX from SAS were used. G3 had higher rates of conception (CR=85.7%) and pregnancy (PR=95.8%) at the end of the breeding season (P<0.05), without the interference of supplementation with MGA (P>0.05). G1 females had a lower conception rate (TC=76.7%) (P<0.05), with the use of MGA® (CR-MGA=59.5%), but similar rates of pregnancy (PR=90.3%; PR-MGA=92.5%) to the G2, at the end of the breeding season (P>0.05). When G2 and G4 were compared, we found that crossbred females supplemented had higher rates of conception and pregnancy. In conclusion, crossbred animals have higher conception and pregnancy rates at the end of the breeding season. Besides, we found that Nellore females had a lower conception rate, with the use of MGA® Premix. |
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Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocolsEficiencia reproductiva de vacas Nellore e cruzadas sometidas a la administración de acetato de melengestrol (MGA) después de los protocolos de IATFEficiência reprodutiva de vacas Nelore e cruzadas submetidas a administração de acetato de melengestrol (MGA) após protocolos de IATFVacasConcepciónCruzadasNelloreProgesterona exógena.CattleConceptionCrossbredNelloreExogenous progesterone.ConcepçãoCruzadasNeloreBovinosProgesterona exógena.This study aimed to evaluate the influence of medroxyprogesterone acetate (MGA) supplementation between the 13th and 20th day after Fixed-Time-Artificial Insemination (FTAI), on the conception and gestation rates of Nellore and crossbred cows (Nellore x Angus), pluriparous and lactating. For the study, 349 Nellore cows and 270 crossbred cows were selected, distributed into 1) group G1 (n=176): Nellore cows submitted to the FTAI protocol, without MGA supplementation; 2) group G2 (n=173): Nellore cows submitted to the FTAI protocol, with supplementation for 7 days of MGA® (0.28g/AU/day) from the 13th post-FTAI; 3) group G3 (n=119): crossbred cows: FTAI protocol, without MGA supplementation; 4) group G4 (n=151): crossbred cows: FTAI protocol followed by MGA supplementation for 7 days (0.28g/AU/day), from the 13th to the 20th day after FTAI. For statistical analysis, the procedures MIXED and GLIMMIX from SAS were used. G3 had higher rates of conception (CR=85.7%) and pregnancy (PR=95.8%) at the end of the breeding season (P<0.05), without the interference of supplementation with MGA (P>0.05). G1 females had a lower conception rate (TC=76.7%) (P<0.05), with the use of MGA® (CR-MGA=59.5%), but similar rates of pregnancy (PR=90.3%; PR-MGA=92.5%) to the G2, at the end of the breeding season (P>0.05). When G2 and G4 were compared, we found that crossbred females supplemented had higher rates of conception and pregnancy. In conclusion, crossbred animals have higher conception and pregnancy rates at the end of the breeding season. Besides, we found that Nellore females had a lower conception rate, with the use of MGA® Premix.Este estudio tuvo como objetivo evaluar la influencia de la suplementación con acetato de medroxiprogesterona (MGA) entre el día 13 y 20 después de la Inseminación Artificial de Tiempo Fijo (FTAI), sobre las tasas de concepción y gestación de vacas Nellore y mestizas (Nellore x Angus), pluríparas y lactante. Para el estudio se seleccionaron 349 vacas Nellore y 270 vacas mestizas, distribuidas en 1) grupo G1 (n = 176): vacas Nellore sometidas al protocolo FTAI, sin suplementación con MGA; 2) grupo G2 (n = 173): vacas Nellore sometidas al protocolo FTAI, con suplementación por 7 días de MGA® (0.28g / AU / día) a partir del 13 post-FTAI; 3) grupo G3 (n = 119): vacas cruzadas: protocolo FTAI, sin suplementación con MGA; 4) grupo G4 (n = 151): vacas cruzadas: protocolo FTAI seguido de suplementación con MGA durante 7 días (0,28 g / AU / día), desde el día 13 al 20 después del FTAI. Para el análisis estadístico se utilizaron los procedimientos MIXED y GLIMMIX de SAS. G3 tuvo mayores tasas de concepción (CR = 85,7%) y preñez (PR = 95,8%) al final de la temporada de reproducción (P <0,05), sin la interferencia de la suplementación con MGA (P> 0,05). Las mujeres G1 tuvieron una tasa de concepción más baja (TC = 76,7%) (P <0,05), con el uso de MGA® (CR-MGA = 59,5%), pero tasas similares de embarazo (PR = 90,3%; PR-MGA = 92,5 %) al G2, al final de la temporada de cría (P> 0.05). Cuando se compararon G2 y G4, encontramos que las hembras cruzadas suplementadas tenían tasas más altas de concepción y embarazo. En conclusión, los animales cruzados tienen mayores tasas de concepción y preñez al final de la temporada de reproducción. Además, encontramos que las hembras Nellore tenían una tasa de concepción más baja, con el uso de MGA® Premix.Este estudo teve por objetivo avaliar a influência da suplementação de acetato de medroxiprogesterona (MGA) entre o 13º e 20º dia após a inseminação artificial em tempo fixo (IATF), sobre as taxas de concepção e gestação de vacas da raça Nelore e cruzadas (Nelore x Angus), pluríparas e lactantes. Para o estudo foram selecionadas 349 vacas Nelore e 270 vacas cruzadas, distribuídas em: 1) G1 (n=176): vacas Nelore submetidas a protocolo de IATF, sem suplementação de MGA; 2) G2 (n=173): vacas Nelore submetidas a protocolo de IATF, com suplementação por 7 dias de MGA® (0,28g/UA/dia) a partir do 13º pós IATF; 3) G3 (n =119): vacas cruzadas: protocolo de IATF, sem suplementação de MGA; 4) G4 (n=151): vacas cruzadas: protocolo de IATF suplementadas por 7 dias de MGA (0,28g/UA/dia), do 13º até 20º dia pós IATF. Para a análise estatística foi utilizado os programas MIXED e GLIMMIX do SAS. G3 apresentaram maiores taxas de concepção (TC=85,7%) e gestação (TG=95,8%) ao final da estação de monta (P<0,05), sem interferência da suplementação com MGA (P>0,05). G1 apresentaram menor taxa de concepção (TC=76,7%) (P<0,05), com o uso de MGA® (TC-MGA=59,5%), mas taxas similares de gestação (TG=90,3%; TG-MGA=92,5%) ao G2, ao final da estação de monta (P>0,05). G2 e G4 suplementadas com MGA apresentaram maior taxa de concepção e gestação. Conclui-se que animais mestiços apresentam maiores taxas de concepção e gestação ao final da estação de monta. Além disso, verificamos que fêmeas Nelore apresentaram menor taxa de concepção, com o uso de MGA® Premix.Research, Society and Development2020-10-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/889710.33448/rsd-v9i10.8897Research, Society and Development; Vol. 9 No. 10; e5679108897Research, Society and Development; Vol. 9 Núm. 10; e5679108897Research, Society and Development; v. 9 n. 10; e56791088972525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/8897/7972Copyright (c) 2020 Alan Gabriel Valero; Carlos Renato de Freitas Guaitolini; Andre Maciel Crespilho; Gabriela Passamani da Cruz; Marcio Luiz Denck Tramontin; Danielle Andressa Oliveira Sestari; Auly Beatriz Trindade; Ana Paula Zanfrilli dos Santos; Isabela Carvalho dos Santos; Rosiara Rosaria Dias Mazierohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessValero, Alan GabrielGuaitolini, Carlos Renato de FreitasCrespilho, Andre MacielCruz, Gabriela Passamani daTramontin, Marcio Luiz Denck Sestari, Danielle Andressa Oliveira Trindade, Auly Beatriz Santos, Ana Paula Zanfrilli dosSantos, Isabela Carvalho dosMaziero, Rosiara Rosaria Dias 2020-10-31T12:03:23Zoai:ojs.pkp.sfu.ca:article/8897Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:31:16.168710Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
dc.title.none.fl_str_mv |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols Eficiencia reproductiva de vacas Nellore e cruzadas sometidas a la administración de acetato de melengestrol (MGA) después de los protocolos de IATF Eficiência reprodutiva de vacas Nelore e cruzadas submetidas a administração de acetato de melengestrol (MGA) após protocolos de IATF |
title |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
spellingShingle |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols Valero, Alan Gabriel Vacas Concepción Cruzadas Nellore Progesterona exógena. Cattle Conception Crossbred Nellore Exogenous progesterone. Concepção Cruzadas Nelore Bovinos Progesterona exógena. |
title_short |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
title_full |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
title_fullStr |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
title_full_unstemmed |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
title_sort |
Reproductive efficiency Nellore and crossbred cows submitted to administration of melengestrol acetate (MGA) after FTAI protocols |
author |
Valero, Alan Gabriel |
author_facet |
Valero, Alan Gabriel Guaitolini, Carlos Renato de Freitas Crespilho, Andre Maciel Cruz, Gabriela Passamani da Tramontin, Marcio Luiz Denck Sestari, Danielle Andressa Oliveira Trindade, Auly Beatriz Santos, Ana Paula Zanfrilli dos Santos, Isabela Carvalho dos Maziero, Rosiara Rosaria Dias |
author_role |
author |
author2 |
Guaitolini, Carlos Renato de Freitas Crespilho, Andre Maciel Cruz, Gabriela Passamani da Tramontin, Marcio Luiz Denck Sestari, Danielle Andressa Oliveira Trindade, Auly Beatriz Santos, Ana Paula Zanfrilli dos Santos, Isabela Carvalho dos Maziero, Rosiara Rosaria Dias |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Valero, Alan Gabriel Guaitolini, Carlos Renato de Freitas Crespilho, Andre Maciel Cruz, Gabriela Passamani da Tramontin, Marcio Luiz Denck Sestari, Danielle Andressa Oliveira Trindade, Auly Beatriz Santos, Ana Paula Zanfrilli dos Santos, Isabela Carvalho dos Maziero, Rosiara Rosaria Dias |
dc.subject.por.fl_str_mv |
Vacas Concepción Cruzadas Nellore Progesterona exógena. Cattle Conception Crossbred Nellore Exogenous progesterone. Concepção Cruzadas Nelore Bovinos Progesterona exógena. |
topic |
Vacas Concepción Cruzadas Nellore Progesterona exógena. Cattle Conception Crossbred Nellore Exogenous progesterone. Concepção Cruzadas Nelore Bovinos Progesterona exógena. |
description |
This study aimed to evaluate the influence of medroxyprogesterone acetate (MGA) supplementation between the 13th and 20th day after Fixed-Time-Artificial Insemination (FTAI), on the conception and gestation rates of Nellore and crossbred cows (Nellore x Angus), pluriparous and lactating. For the study, 349 Nellore cows and 270 crossbred cows were selected, distributed into 1) group G1 (n=176): Nellore cows submitted to the FTAI protocol, without MGA supplementation; 2) group G2 (n=173): Nellore cows submitted to the FTAI protocol, with supplementation for 7 days of MGA® (0.28g/AU/day) from the 13th post-FTAI; 3) group G3 (n=119): crossbred cows: FTAI protocol, without MGA supplementation; 4) group G4 (n=151): crossbred cows: FTAI protocol followed by MGA supplementation for 7 days (0.28g/AU/day), from the 13th to the 20th day after FTAI. For statistical analysis, the procedures MIXED and GLIMMIX from SAS were used. G3 had higher rates of conception (CR=85.7%) and pregnancy (PR=95.8%) at the end of the breeding season (P<0.05), without the interference of supplementation with MGA (P>0.05). G1 females had a lower conception rate (TC=76.7%) (P<0.05), with the use of MGA® (CR-MGA=59.5%), but similar rates of pregnancy (PR=90.3%; PR-MGA=92.5%) to the G2, at the end of the breeding season (P>0.05). When G2 and G4 were compared, we found that crossbred females supplemented had higher rates of conception and pregnancy. In conclusion, crossbred animals have higher conception and pregnancy rates at the end of the breeding season. Besides, we found that Nellore females had a lower conception rate, with the use of MGA® Premix. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-10-10 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/8897 10.33448/rsd-v9i10.8897 |
url |
https://rsdjournal.org/index.php/rsd/article/view/8897 |
identifier_str_mv |
10.33448/rsd-v9i10.8897 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/8897/7972 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 9 No. 10; e5679108897 Research, Society and Development; Vol. 9 Núm. 10; e5679108897 Research, Society and Development; v. 9 n. 10; e5679108897 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
instname_str |
Universidade Federal de Itajubá (UNIFEI) |
instacron_str |
UNIFEI |
institution |
UNIFEI |
reponame_str |
Research, Society and Development |
collection |
Research, Society and Development |
repository.name.fl_str_mv |
Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
repository.mail.fl_str_mv |
rsd.articles@gmail.com |
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1797052660800552960 |