Assessment of coconut water added to Numida meleagris egg yolk as cryoprotectant for goat semen

Effects were assessed of the dilutants TRIS and ACP - 101c® with the addition of different guinea fowl (Numida meleagris) egg yolk concentrations. Fifteen ejaculates were collected from five goats of the Anglo Nubian breed. The ejaculates were pooled and then divided into 12 groups, two control groups (GC1 TRIS, with 2.5% Gallus gallus domesticus hen egg yolk GOGD), (GC2 Control Group ACP - 101c®, with the addition of 2.5% Gallus gallus domesticus hen egg yolk GOGD) and ten experimental groups (EG), containing TRIS and ACP added with different concentrations of egg yolk from guinea hen (Numida meleagris) (TRIS 2,5% GONM; TRIS 5% GONM; TRIS 10% GONM; TRIS 15% GONM; TRIS 20% GONM; ACP® 2,5% GONM; ACP® 5% GONM; ACP® 10% GONM; ACP® 15% GONM; ACP® 20% GONM). Then cryopreservation was carried out and the samples stored in liquid nitrogen (-196 °C). After seven days, the samples were thawed and assessed for spermatic kinetics, immunofluorescence and sperm morphology. Analysis of GOMN by the CASA system showed that the various parameters were similar to those of GOGD (P>0.05). The membrane integrity, mitochondrial potential and the acrosome were not influenced by the treatment (P>0.05) nor by the dilutant used for cryopreservation (P>0.05). The spermatic morphology was also preserved by the different GOGD and GONM concentrations in the ACP® and TRIS dilutants, with no statistically significant differences (P<0.05). It was concluded that Numida meleagris egg yolk, as external membrane cryoproctant added to the dilutants ACP-101c® and TRIS, improved goat semen quality.(AU)

Uso da polpa desidratada do fruto de Mauritia flexuosa como suplemento ao diluente de congelação do sêmen caprino / Use of dehydrated pulp of Mauritia flexuosa fruit as supplement to freezing extender of goat semen

Objetivou-se avaliar a qualidade in vitro do sêmen caprino descongelado utilizando diluentesuplementado com a polpa desidratada do fruto de Mauritia flexuosa. O experimento foi dividido emduas etapas. Na primeira, foram utilizados 15 pools,fracionados em 13 tratamentos com diferentesconcentrações do extrato bruto. Os melhores resultados de viabilidade espermática obtidos na primeiraetapa foram utilizadas na segunda etapa (criopreservação). Para isto, foram formados dois gruposutilizando 15 pools, sendo um diluente constituído (TRIS + 7% glicerol + melhores concentrações doextrato bruto) e outro pelo diluente (TRIS + 2,5% gema de ovo + 7% glicerol + melhores concentraçõesdo extrato bruto). Na primeira etapa os grupos contendo baixa quantidade do extrato não diferiram dogrupo controle (P≤0,05). Todavia na segunda etapa, após descongelação, os grupos TRIS contendo 2,5%ou 0% de gema de ovo apresentaram diferença significativa, onde o grupo TB06GLGE foi superior aogrupo controle. Portanto, a polpa desidratada do fruto de Mauritia flexuosa,nas concentrações de 0,25% a1%, não atuou de forma benéfica sobre parâmetros espermáticos do sêmen caprino após acriopreservação/descongelação.(AU)

The objective was to evaluate the in vitro quality of the thawed goat semen using diluentsupplemented with the dehydrated pulp of the Mauritia flexuosa fruit. The experiment was divided intotwo stages. In the first, 15 fractionated pools were used in 13 treatments with different concentrations ofthe crude extract. The best results of sperm viability obtained in the first experimental stage were used inthe second experimental stage (cryopreservation). Afterwards, two groups were formed using 15 pools,one constituent (TRIS + 7% glycerol + best concentrations of the crude extract) and another by thediluent (TRIS + 2,5% egg yolk + 7% glycerol + best concentrations of the crude extract). In the firststage, the groups containing low amount of extract did not differ from the control group (P≤0.05).However, in the second stage, after thawing, TRIS groups containing 2.5% or 0% egg yolk presented asignificant difference, where the TB06GLGE group was superior to the control group. Therefore, thedehydrated fruit pulp of Mauritia flexuosa at concentrations of 0.25% to 1% did not benefit goat semenparameters after cryopreservation/thawing.(AU)

Uso da polpa desidratada do fruto de Mauritia flexuosa como suplemento ao diluente de congelação do sêmen caprino / Use of dehydrated pulp of Mauritia flexuosa fruit as supplement to freezing extender of goat semen

Objetivou-se avaliar a qualidade in vitro do sêmen caprino descongelado utilizando diluentesuplementado com a polpa desidratada do fruto de Mauritia flexuosa. O experimento foi dividido emduas etapas. Na primeira, foram utilizados 15 pools,fracionados em 13 tratamentos com diferentesconcentrações do extrato bruto. Os melhores resultados de viabilidade espermática obtidos na primeiraetapa foram utilizadas na segunda etapa (criopreservação). Para isto, foram formados dois gruposutilizando 15 pools, sendo um diluente constituído (TRIS + 7% glicerol + melhores concentrações doextrato bruto) e outro pelo diluente (TRIS + 2,5% gema de ovo + 7% glicerol + melhores concentraçõesdo extrato bruto). Na primeira etapa os grupos contendo baixa quantidade do extrato não diferiram dogrupo controle (P≤0,05). Todavia na segunda etapa, após descongelação, os grupos TRIS contendo 2,5%ou 0% de gema de ovo apresentaram diferença significativa, onde o grupo TB06GLGE foi superior aogrupo controle. Portanto, a polpa desidratada do fruto de Mauritia flexuosa,nas concentrações de 0,25% a1%, não atuou de forma benéfica sobre parâmetros espermáticos do sêmen caprino após acriopreservação/descongelação.

The objective was to evaluate the in vitro quality of the thawed goat semen using diluentsupplemented with the dehydrated pulp of the Mauritia flexuosa fruit. The experiment was divided intotwo stages. In the first, 15 fractionated pools were used in 13 treatments with different concentrations ofthe crude extract. The best results of sperm viability obtained in the first experimental stage were used inthe second experimental stage (cryopreservation). Afterwards, two groups were formed using 15 pools,one constituent (TRIS + 7% glycerol + best concentrations of the crude extract) and another by thediluent (TRIS + 2,5% egg yolk + 7% glycerol + best concentrations of the crude extract). In the firststage, the groups containing low amount of extract did not differ from the control group (P≤0.05).However, in the second stage, after thawing, TRIS groups containing 2.5% or 0% egg yolk presented asignificant difference, where the TB06GLGE group was superior to the control group. Therefore, thedehydrated fruit pulp of Mauritia flexuosa at concentrations of 0.25% to 1% did not benefit goat semenparameters after cryopreservation/thawing.