Medicine
8 years ago

New sperm preservation method improves breeding success for endangered brown bears!

Theriogenology
Use of commercial extenders and alternatives to prevent sperm agglutination for cryopreservation of brown bear semen
S. Gomes-Alves, M. Álvarez, M. Nicolás, Elena López Urueña, C. Martínez-Rodríguez, S. Borragán, P. de Paz, L. Anel

Paper Summary

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The researchers tested different extenders for preserving brown bear semen and found that the TTF-ULE/bear extender and Andromed extender were the most effective in maintaining sperm quality after thawing. They also discovered that using a handling extender during semen collection reduced sperm clumping in fresh samples without affecting semen quality. Overall, the TTF-ULE/bear extender is the best choice for cryopreserving brown bear semen, but Andromed extender also works well.