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Revista Brasileira de Ciência Veterinária
Article . 2015 . Peer-reviewed
Data sources: Crossref
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Avaliação do tocoferol no congelamento do sêmen bovino e nas taxas de prenhez após inseminação artificial em tempo fixo

Authors: Moacir Ferreira Duarte; Luciana Keiko Hatamoto Zervoudakis; Joanis Tilemahos Zervoudakis; Marcílio Nichi; Ricardo Pimenta Bertolla; Pedro Paulo Tsuneda; Luís Eduardo Senra e Silva; +2 Authors

Avaliação do tocoferol no congelamento do sêmen bovino e nas taxas de prenhez após inseminação artificial em tempo fixo

Abstract

O presente estudo avaliou se a adicao de tocoferol no diluidor para a criopreservacao de semen bovino reduz os danos causados pelo estresse oxidativo e melhora a capacidade fertilizante do semen utilizado na IATF. No primeiro lote sincronizado foram utilizadas 84 femeas Nelore ( Bostaurusindicus ) e no segundo lote 44 femeas. Para a inseminacao artificial as vacas foram divididas aleatoriamente em dois grupos: controle (inseminadas com semen criopreservado sem uso de aditivos) e tocoferol (inseminadas com semen criopreservado com adicao de 10mmol/mLtocoferol). Foram utilizados semen de tres reprodutores da raca Nelore ( Bos taurus indicus ), sendo as doses provenientes de uma unica partida, distribuida aleatoriamente entre as femeas inseminadas. O diagnostico de gestacao foi realizado 35 dias apos a IATF por exame ultrassonografico retal. O experimento foi realizado em delineamento inteiramente casualizado, e a taxa de prenhez comparada pelo teste Qui-Quadrado. A adicao de 10mmol/mL de tocoferol no diluidor do semen nao influenciou (P>0,05) na taxa de prenhez apos IATF em comparacao ao grupo controle (sem aditivos) para as medias do primeiro lote sincronizado (n=84; 38,5% vs 40%), segundo lote sincronizado (n=44; 28% vs 31,6%) e para a media geral dos lotes (n=128; 34,4% vs 37,5%). Nas condicoes experimentais a adicao de 10mmol de tocoferol ao meio crioprotetor do semen nao melhorou a taxa de prenhez apos a inseminacao artificial em tempo fixo na especie bovina.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
gold