Influência do tempo de equilíbrio sobre a qualidade do sêmen caprino após a descongelação / Influence of balance time on quality of buck semen after thawing

ABSTRACT

The animals were divided into three groups G1, G2, G3. Semen collected was diluted in Tris-yolk baseand packaged in 0.25 ml straws, a dose of 100 x 106 sperm. Semen samples were distributed in differentequilibrium time protocols. The group 1 (1h), group 2 (2 h), group 3 (3 h). Mean values for motility were19.37%, 16.87% and 16.25% respectively for G1, G2 and G3. To analyze (TTR) which consisted of placing asemen , and incubated at 37°C for a period of 120 minutes. The force sperm motility and sperm were evaluatedby TTR in different time 0, 60, 120, 180 minutes. The indices obtained from motility and sperm vigor wereevaluated by PROC GLM (SAS, 2001) and proceeded to the 5% Tukey test. This study demonstrated effect theequilibration period, on the viability of goat semen after the freeze-thaw process, in which the semen exposed toless cooling time has a higher sperm viability.