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Previous issue date: 2015-02-27 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / The aim was to evaluate the effect of the Aloe vera gel (Aloe barbadensis Miller), in association with the Tris base (hydroxymethyl aminomethane) or powdered coconut water (ACP- 106®) in canine semen conservation, as well as the action of this gel in the renewal process of the extender. Semen samples from five dogs, of breed Basset Hound, were used. In Experiment 1, samples were diluted in duplicate, using Tris plus 20% egg yolk (G1 and G2) or 5% Aloe vera (G3 and G4) and evaluated at 0, 48, 72 and 96 hours. After 48 hours, all samples were centrifuged for 10 minutes (400g) in a cooled centrifuge (5 °C). In the groups G1 and G3 the supernatant was removed and a new extender was added. In the other groups (G2 and G4) pellets were re-diluted in the same supernatant, without renewal. For Experiment 2, samples were divided into two equal aliquots, according to the treatments (G1: Tris + 20% egg yolk, control G2: Tris + 5% Aloe vera; G3: ACP-106® + 5% Aloe vera) and evaluated at 0, 24, 48 and 72 hours after cooling. In both experiments were performed sperm kinetics and membrane integrity analysis (iMP). In Experiment 1 results the diluent renewal did not affect on any parameter analyzed in the group using egg yolk (G1), shown when comparing the two treatments of this substance. The G2 (without renewal) did not demonstrate a significant difference when compared to G1 (renewal). However, groups with Tris-Aloe vera (G3 and G4) were lower (P <0.05) than the groups with Tris-egg yolk (G1 and G2) after the renewal, and this has showed deleterious effect on the group that sperm received new diluent (G3) in all parameters. There were no statistical differences in Experiment 2 in the parameters of total motility, straightness and oscillation index and plasma membrane integrity comparing treatments and evaluation times. However, the progressive motility in G1 proved to be significantly higher (P <0.05) than the other treatments in the first assessment period (0h). However, at 24 the G3 showed values similar to G1. The linearity values of G3 were significantly higher (P <0.05) than other groups from the start of the evaluations. According to the findings from Experiment 1, it can be concluded that the replacement of diluent is not necessary for the preservation of canine spermatozoa undergo cooling (5 °C) for 96 h. Furthermore, it was found that the gel of Aloe vera may be used to replace egg yolk in dog semen cooling diluent at a concentration of 5% without renewal. In the Experiment 2, it can be concluded that Aloe vera can be used at a concentration of 5% to replace egg yolk in dog semen cooling diluent, regardless of the one used. / Objetivou-se avaliar o efeito do gel da planta Aloe vera (Aloe barbadensis Miller), associado ao diluidor Tris (hidroximetil aminometano) ou Água de coco em pó (ACP-106®) na conservação de sêmen de cães, bem como a ação desse gel no processo de renovação do diluidor. Foram utilizadas amostras seminais de cinco cães da raça Basset Hound. No Experimento 1, as amostras foram diluídas em duplicata, utilizando Tris + 20% de gema de ovo (G1 e G2) ou 5% de Aloe vera (G3 e G4), e avaliadas nos tempos de 0, 48, 72 e 96 horas. Após a análise de 48h, todas as amostras foram centrifugadas por 10 min (400g) em centrífuga refrigerada (5 ºC). Nos grupos G1 e G3 o sobrenadante foi removido e um novo diluidor foi adicionado. Nos outros grupos (G2 e G4) os pellets foram re-diluídos no mesmo sobrenadante, sem renovação. Para o Experimento 2, as amostras foram divididas em alíquotas iguais, de acordo com os tratamentos (G1: Tris + 20% gema de ovo, controle; G2: Tris + 5% Aloe vera; G3: ACP-106® + 5% Aloe vera) e avaliados nos tempos de 0, 24, 48 e 72 horas após refrigeração. Em ambos experimentos foram realizadas análises de cinética espermática e de integridade da membrana (iMP). Nos resultados do Experimento 1 a renovação do diluidor não influenciou em nenhum parâmetro analisado no grupo que utilizou gema de ovo (G1), fato evidenciado quando comparados os dois tratamentos que utilizaram esta substância. O G2 (sem renovação) não determinou diferença significativa quando comparado ao G1 (com renovação). Entretanto, os grupos com Tris-Aloe vera (G3 e G4) foram inferiores (P<0,05) aos grupos com Tris-gema de ovo (G1 e G2) após a renovação, e esta mostrou efeito deletério nos espermatozoides do grupo que recebeu novo diluidor (G3), em todos os parâmetros. No Experimento 2 não foram encontradas diferenças estatísticas nos parâmetros de motilidade total, retilinearidade e índice de oscilação e integridade de membrana plasmática quando comparados os tratamentos e os tempos de avaliação. Entretanto, a motilidade progressiva no G1 mostrou-se significativamente superior (P<0,05) aos demais tratamentos no primeiro tempo de avaliação (0h). No entanto, às 24h o G3 demonstrou valores semelhantes ao G1. Os valores de linearidade no G3 foram significativamente superiores (P<0,05) aos demais grupos desde o início das avaliações. De acordo com os achados do Experimento 1, pode-se concluir que a renovação do diluidor não é necessária para a preservação dos espermatozoides caninos submetidos à refrigeração (5 ºC) por 96 h. Além disso, constatou-se que o gel da Aloe vera pode ser utilizado em substituição à gema de ovo, no diluidor de refrigeração de sêmen de cães, na concentração de 5%, sem renovação do diluidor. Já no Experimento 2, pode-se concluir que a Aloe vera pode ser empregada na concentração de 5% em substituição à gema de ovo no diluidor de refrigeração de sêmen de cães, independente do diluidor utilizado.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2:tede2/4694 |
| Date | 27 February 2015 |
| Creators | MELO, Cibele Cavalcanti Souza de |
| Contributors | GUERRA, Maria Madalena Pessoa, OLIVEIRA, Érika Christina Santos, SILVA, Sildivane Valcácia, SILVA JUNIOR, Valdemiro Amaro da, SILVA, Ellen Cordeiro Bento da |
| Publisher | Universidade Federal Rural de Pernambuco, Programa de Pós-Graduação em Biotecnologia (Renorbio), UFRPE, Brasil, Rede Nordeste de Biotecnologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRPE, instname:Universidade Federal Rural de Pernambuco, instacron:UFRPE |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | The aim was to evaluate the effect of the Aloe vera gel (Aloe barbadensis Miller), in association with the Tris base (hydroxymethyl aminomethane) or powdered coconut water (ACP- 106®) in canine semen conservation, as well as the action of this gel in the renewal process of the extender. Semen samples from five dogs, of breed Basset Hound, were used. In Experiment 1, samples were diluted in duplicate, using Tris plus 20% egg yolk (G1 and G2) or 5% Aloe vera (G3 and G4) and evaluated at 0, 48, 72 and 96 hours. After 48 hours, all samples were centrifuged for 10 minutes (400g) in a cooled centrifuge (5 °C). In the groups G1 and G3 the supernatant was removed and a new extender was added. In the other groups (G2 and G4) pellets were re-diluted in the same supernatant, without renewal. For Experiment 2, samples were divided into two equal aliquots, according to the treatments (G1: Tris + 20% egg yolk, control G2: Tris + 5% Aloe vera; G3: ACP-106® + 5% Aloe vera) and evaluated at 0, 24, 48 and 72 hours after cooling. In both experiments were performed sperm kinetics and membrane integrity analysis (iMP). In Experiment 1 results the diluent renewal did not affect on any parameter analyzed in the group using egg yolk (G1), shown when comparing the two treatments of this substance. The G2 (without renewal) did not demonstrate a significant difference when compared to G1 (renewal). However, groups with Tris-Aloe vera (G3 and G4) were lower (P <0.05) than the groups with Tris-egg yolk (G1 and G2) after the renewal, and this has showed deleterious effect on the group that sperm received new diluent (G3) in all parameters. There were no statistical differences in Experiment 2 in the parameters of total motility, straightness and oscillation index and plasma membrane integrity comparing treatments and evaluation times. However, the progressive motility in G1 proved to be significantly higher (P <0.05) than the other treatments in the first assessment period (0h). However, at 24 the G3 showed values similar to G1. The linearity values of G3 were significantly higher (P <0.05) than other groups from the start of the evaluations. According to the findings from Experiment 1, it can be concluded that the replacement of diluent is not necessary for the preservation of canine spermatozoa undergo cooling (5 °C) for 96 h. Furthermore, it was found that the gel of Aloe vera may be used to replace egg yolk in dog semen cooling diluent at a concentration of 5% without renewal. In the Experiment 2, it can be concluded that Aloe vera can be used at a concentration of 5% to replace egg yolk in dog semen cooling diluent, regardless of the one used., 7794227690756777355, 600, 600, 600, 600, -8104576588452276421, 6209957791494323825, -2555911436985713659 |
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