Determinación de la calidad del semen criopreservado con lecitina de soya o yema de huevo, en machos cabríos

The objective was to compare the quality of cryopreserved goat semen with soy lecithin or egg yolk. The semen was collected from male goats (n=4), two commercial diluents AndroMed® (1% soy lecithin, SL); Optidyl (20% (v/v) Tris-egg yolk; TY), and a citrate-egg yolk-based diluent (CY) were used in fresh semen (FS) and then cooled from 37 to 4 °C for 2 h (refrigerated semen, RS), afterwards straws were filled with semen and frozen in liquid nitrogen at -196 °C (FS). There were no differences (p>0.05) between diluents in the FS in the mass motility (MM; 4.7±0.26), sperm viability (SV; 74.1±1.66) and individual motility (MI; 62.3±4.0). In the same sense, for the RS there was no difference (p>0.05) between diluents with respect to MM (3.83±0.4) and MI (52.1±6.0), however, the SV varied (p<0.05) according to the diluent, observing the lowest viability in SL vs CY and TY (51.0±13.0 vs 71.3±3.0 and 69.0±3.1). Regarding FS the MM, MI and SV obtained better values (p<0.05) with the diluent TY vs SL and CY (2.4±0.5, 32.5±8.3, 41.3±13.0). The results showed a better cryopreservation of goat semen with the diluent Tris-yolk compared to that of soy lecithin.