166 INFLUENCE OF SEASON ON SEMINAL CHARACTERISTICS OF ALPACAS (VICUGNA PACOS)
J. C. Villanueva A , W. F. Huanca A , J. Turin A and W. Huanca AFaculty of Veterinary Medicine, Laboratory of Animal Reproduction, Universidad Nacional Mayor de San Marcos, Lima, Peru
Reproduction, Fertility and Development 29(1) 191-191 https://doi.org/10.1071/RDv29n1Ab166
Published: 2 December 2016
Abstract
The study was carried out with the objective to evaluate the influence of season (summer and winter) on seminal characteristics of alpacas. Forty semen samples, 20 for each season, were collected from 4 adult alpaca by artificial vagina technique and evaluated immediately after collection to determine the following semen characteristics: (a) volume, (b) pH, (c) viscosity, (d) color, (e) concentration, (f) motility, (g) viability, (h) abnormalities, and (i) HOST test. Statistical analyses of data were made with least square ANOVA. The males were fed the same diet during both seasons and collection time was standardized in 10 min. The results obtained present differences in viscosity (5.9 ± 0.4 v. 3.7 ± 0.7 mm), motility (58.8 ± 22.1 v. 77.3 ± 11.6%), and concentration (135.9 ± 88.7 × 106 v. 242.4 ± 140.9 × 106; P < 0,05) but not in volume (1.9 ± 0.8 v. 2.1 ± 0.8 mL), pH (7.01 ± 0.3 v. 7.1 ± 0.3), viability (52.9 ± 18.4 v. 64.5 ± 15.9%), HOST test (56.1 ± 15.8 v. 49.3 ± 13.2%), and abnormalities (82.5 ± 7.2 v. 88.1 ± 7.0%) for the summer and winter seasons, respectively. The results suggest differences for some characteristics and possible differences in the thermoregulation scrotal of the alpacas with respect to others species.
