Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1678-41626103 http://hdl.handle.net/11449/109522 |
Resumo: | The aim of this study was to analyze the effect of flushing on the reproductive performance of Morada Nova (MN) and Santa Inês (SI) ewes submitted to fixed time artificial insemination (TAI). Twenty seven SI and 24 MN supplemented with concentrate (1% of live weight, on average), for 75 days during the breeding season. After 30 days of supplementation, ewes were synchronized with the aid of a hormonal protocol (HP) based on progesterone, eCG and cloprostenol. The estrus observation was conducted at 12, 24, 36 and 48 h after the end of HP with the aid of two ruffians. TAI was done 55 h after the end of HP. From 20 to 45 days after the beginning of the HP ewes were exposed to rams (natural breeding). The pregnancy diagnosis was evaluated 70 days after TAI. We analyzed the weight, body condition score, estrus rate, pregnancy rate and prolificacy testing the effects of race, week of supplementation and body condition score class. The weight and body conditions of ewes varied according to the week of supplementation, with higher values in the first two weeks following TAI. The estrus rate was 88.2% and 43.2% of the ewes showed estrus up to 24 hours of the end of the HP. The pregnancy rate per TAI was 31.3% and the pregnancy rate after natural breeding was 50.0%. It was observed that body condition score classes interfered in pregnancy rates. There was a higher percentage of multiple births by pregnancy by TAI than by natural breeding. It was concluded that the flushing resulted in weight gain and better body conditions ensuring the standardization of the herd for breeding season, which therefore improved reproductive performance. The HP used advanced the onset of estrus and increased prolificacy, but was inefficient in the synchronization of woolless sheep. |
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Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixoThe effect of flushing on the reproductive performance of Morada Nova and Santa Inês ewes submitted to fixed time artificial inseminationovinocondição corporalestroprolificidadesincronizaçãoovinebody conditionsestruslitter sizesynchronizationThe aim of this study was to analyze the effect of flushing on the reproductive performance of Morada Nova (MN) and Santa Inês (SI) ewes submitted to fixed time artificial insemination (TAI). Twenty seven SI and 24 MN supplemented with concentrate (1% of live weight, on average), for 75 days during the breeding season. After 30 days of supplementation, ewes were synchronized with the aid of a hormonal protocol (HP) based on progesterone, eCG and cloprostenol. The estrus observation was conducted at 12, 24, 36 and 48 h after the end of HP with the aid of two ruffians. TAI was done 55 h after the end of HP. From 20 to 45 days after the beginning of the HP ewes were exposed to rams (natural breeding). The pregnancy diagnosis was evaluated 70 days after TAI. We analyzed the weight, body condition score, estrus rate, pregnancy rate and prolificacy testing the effects of race, week of supplementation and body condition score class. The weight and body conditions of ewes varied according to the week of supplementation, with higher values in the first two weeks following TAI. The estrus rate was 88.2% and 43.2% of the ewes showed estrus up to 24 hours of the end of the HP. The pregnancy rate per TAI was 31.3% and the pregnancy rate after natural breeding was 50.0%. It was observed that body condition score classes interfered in pregnancy rates. There was a higher percentage of multiple births by pregnancy by TAI than by natural breeding. It was concluded that the flushing resulted in weight gain and better body conditions ensuring the standardization of the herd for breeding season, which therefore improved reproductive performance. The HP used advanced the onset of estrus and increased prolificacy, but was inefficient in the synchronization of woolless sheep.O objetivo do estudo foi analisar o efeito do flushing, do protocolo hormonal para sincronização de estro e da IATF sobre o desempenho reprodutivo de ovelhas Morada Nova (MN) e Santa Inês (SI). Foram utilizadas 27 ovelhas SI e 24 ovelhas MN suplementadas com concentrado (1% do peso vivo, em média) durante 75 dias de estação reprodutiva. Após 30 dias de suplementação, as ovelhas foram sincronizadas com protocolo hormonal (PH) à base de progestágeno, eCG e cloprostenol. A observação de estro foi realizada após 12, 24, 36 e 48 horas do término do PH, com o auxílio de dois rufiões, e a IATF foi realizada aproximadamente 55 horas após o final do PH. Do 20º ao 45º dia após o início do PH, realizou-se o repasse com um reproduto Dorper. O diagnóstico de prenhez foi realizado 70 dias após a IATF. Foi analisado o peso, escore da condição corporal (ECC), taxa de apresentação de estro, taxa de prenhez e prolificidade, testando-se os efeitos da raça, semana de suplementação (SS) e classe de ECC. O peso e ECC das ovelhas variaram em função da SS. Foi observada taxa de estro de 88,2%, sendo que 43,2% das ovelhas apresentaram estro até 24 horas do final do PH. A taxa de prenhez por IATF foi de 31,4% e a de prenhez após repasse foi de 50,0%, sendo que a classe de ECC interferiu nas taxas de prenhez. Obteve-se maior porcentagem de partos múltiplos de ovelhas prenhes por IATF do que por monta natural no repasse. Conclui-se que o flushing resultou em ganho de peso e aumento do ECC, o que garantiu a padronização do rebanho para a estação reprodutiva e, consequentemente, melhorou o desempenho reprodutivo. O PH utilizado aumentou a prolificidade e adiantou o início do estro; porém, não foi eficiente na sincronização de ovelhas deslanadas.Universidade Estadual Paulista FCAVUniversidade Federal do Piauí CPCEUniversidade Federal do Piauí CTTUniversidade Estadual Paulista FCAVUniversidade Federal de Minas Gerais (UFMG), Escola de VeterináriaUniversidade Estadual Paulista (Unesp)Universidade Federal do Piauí (UFPI)Gottardi, F.p. [UNESP]Souza Júnior, A.Barbosa, Y.g.s.Marques, C.a.t.Bezerra, L.r.Araújo, M.j.Mingoti, G.z. [UNESP]Torreão, J.n.c.2014-09-30T18:18:25Z2014-09-30T18:18:25Z2014-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article329-338application/pdfhttp://dx.doi.org/10.1590/1678-41626103Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Universidade Federal de Minas Gerais, Escola de Veterinária, v. 66, n. 2, p. 329-338, 2014.0102-0935http://hdl.handle.net/11449/10952210.1590/1678-41626103S0102-09352014000200002WOS:000337146700002S0102-09352014000200002.pdf41919517643347660000-0002-3059-4458SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporArquivo Brasileiro de Medicina Veterinária e Zootecnia0.2860,248info:eu-repo/semantics/openAccess2024-09-04T19:14:47Zoai:repositorio.unesp.br:11449/109522Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-04T19:14:47Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo The effect of flushing on the reproductive performance of Morada Nova and Santa Inês ewes submitted to fixed time artificial insemination |
title |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
spellingShingle |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo Gottardi, F.p. [UNESP] ovino condição corporal estro prolificidade sincronização ovine body conditions estrus litter size synchronization |
title_short |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
title_full |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
title_fullStr |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
title_full_unstemmed |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
title_sort |
Efeito do flushing sobre o desempenho reprodutivo de ovelhas Morada Nova e Santa Inês submetidas à inseminação artificial em tempo fixo |
author |
Gottardi, F.p. [UNESP] |
author_facet |
Gottardi, F.p. [UNESP] Souza Júnior, A. Barbosa, Y.g.s. Marques, C.a.t. Bezerra, L.r. Araújo, M.j. Mingoti, G.z. [UNESP] Torreão, J.n.c. |
author_role |
author |
author2 |
Souza Júnior, A. Barbosa, Y.g.s. Marques, C.a.t. Bezerra, L.r. Araújo, M.j. Mingoti, G.z. [UNESP] Torreão, J.n.c. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal do Piauí (UFPI) |
dc.contributor.author.fl_str_mv |
Gottardi, F.p. [UNESP] Souza Júnior, A. Barbosa, Y.g.s. Marques, C.a.t. Bezerra, L.r. Araújo, M.j. Mingoti, G.z. [UNESP] Torreão, J.n.c. |
dc.subject.por.fl_str_mv |
ovino condição corporal estro prolificidade sincronização ovine body conditions estrus litter size synchronization |
topic |
ovino condição corporal estro prolificidade sincronização ovine body conditions estrus litter size synchronization |
description |
The aim of this study was to analyze the effect of flushing on the reproductive performance of Morada Nova (MN) and Santa Inês (SI) ewes submitted to fixed time artificial insemination (TAI). Twenty seven SI and 24 MN supplemented with concentrate (1% of live weight, on average), for 75 days during the breeding season. After 30 days of supplementation, ewes were synchronized with the aid of a hormonal protocol (HP) based on progesterone, eCG and cloprostenol. The estrus observation was conducted at 12, 24, 36 and 48 h after the end of HP with the aid of two ruffians. TAI was done 55 h after the end of HP. From 20 to 45 days after the beginning of the HP ewes were exposed to rams (natural breeding). The pregnancy diagnosis was evaluated 70 days after TAI. We analyzed the weight, body condition score, estrus rate, pregnancy rate and prolificacy testing the effects of race, week of supplementation and body condition score class. The weight and body conditions of ewes varied according to the week of supplementation, with higher values in the first two weeks following TAI. The estrus rate was 88.2% and 43.2% of the ewes showed estrus up to 24 hours of the end of the HP. The pregnancy rate per TAI was 31.3% and the pregnancy rate after natural breeding was 50.0%. It was observed that body condition score classes interfered in pregnancy rates. There was a higher percentage of multiple births by pregnancy by TAI than by natural breeding. It was concluded that the flushing resulted in weight gain and better body conditions ensuring the standardization of the herd for breeding season, which therefore improved reproductive performance. The HP used advanced the onset of estrus and increased prolificacy, but was inefficient in the synchronization of woolless sheep. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-30T18:18:25Z 2014-09-30T18:18:25Z 2014-04-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/1678-41626103 Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Universidade Federal de Minas Gerais, Escola de Veterinária, v. 66, n. 2, p. 329-338, 2014. 0102-0935 http://hdl.handle.net/11449/109522 10.1590/1678-41626103 S0102-09352014000200002 WOS:000337146700002 S0102-09352014000200002.pdf 4191951764334766 0000-0002-3059-4458 |
url |
http://dx.doi.org/10.1590/1678-41626103 http://hdl.handle.net/11449/109522 |
identifier_str_mv |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Universidade Federal de Minas Gerais, Escola de Veterinária, v. 66, n. 2, p. 329-338, 2014. 0102-0935 10.1590/1678-41626103 S0102-09352014000200002 WOS:000337146700002 S0102-09352014000200002.pdf 4191951764334766 0000-0002-3059-4458 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia 0.286 0,248 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
329-338 application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais (UFMG), Escola de Veterinária |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais (UFMG), Escola de Veterinária |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
repositoriounesp@unesp.br |
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1810021355690655744 |