Efecto de tres dilutores en la conservaciÓn del semen de alpacas

The present work was carried out at the Experimental Research Station QuimsachataINIA, Puno. The objective was to evaluate the efficiency of three semen extenders in alpaca semen: Tris-glucose, Tris-fructose and a piǵs commercial extender. Twelve animals were selected for semen collection using the artificial vagina. Males were trained for a month. Mean values for semen parameters were: volume of 2.7 ± 0.8 ml, viscosityof 1. 04 ± 0.3, motilityof54.0 ± 8.0%, pH towards toalkaline, concentration of 248,000 sperms/ml, and the most common color was milky white. The average time for the copula was 26.5 ± 3.8 minutes. Semen was diluted in 1:2 and the dilutions were evaluated on individual motility as the only parameter for sperm viability. The extender Tris-glucose had an average of 5.8 ± 1.1 hours viability, Tris-fructose had 6.1 ± 2.5 hours, and the commercial extender had 5.5 ± 1.0 hours, without statistical differences between extenders.