InVet. 2013, 15(1): 47-55 ISSN 1514-6634 (impreso) ANA TOMÍA Y...
The aims of this study were: 1) to determine testicle size and shape, 2) ultrasonographically evaluate the accessory sex glands associated to the male reproductive tract, 3) collect semen by electroejaculation and determine semen parameters in vicuna. Knowledge on vicuna male reproductive system is...
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| Autores principales: | , , , , , , , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
| Publicado: |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
2013
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_3524 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_3524.dir/3524.PDF |
| Aporte de: |
| Sumario: | The aims of this study were: 1) to determine testicle size and shape, 2) ultrasonographically evaluate the accessory sex glands associated to the male reproductive tract, 3) collect semen by electroejaculation and determine semen parameters in vicuna. Knowledge on vicuna male reproductive system is scarce, thus the objectives of this study are important for estimating the reproductive fitness of males in the future.\nMeasurements for the right and left testes were 3.91±0.64 cm and 3.91±0.60 cm long and 1.92±0.31 cm and 1.93±0.37 cm wide respectively (n=19). Ultrasonographically, the average length and width\nof the prostate was 1.69 cm and 1.76 cm respectively and the average length and width of the bulbourethral glands was 1.08 cm and 1.60 cm respectively. No seminal vesicles were observed and the average distance between anus and prostate was obtained (11.5 cm) (n=3). Semen presented the following characteristics (range): whitish color, thread formation, pH (7.0-7.7), volume (1.0-2.5 ml), concentration (10-140x106 sperm/ml), sperm motility (0 to 10%) and morphology (normal\nsperm 66-75%) (n=3; 7 ejaculates). Eighty nine percent of the sperm nuclei stained with Feulgen were morphologically normal and the morphometric characteristics were obtained using digital\nmicrophotographs (n=1; 3 ejaculates). Nuclei stained with Toluidine Blue showed three distinct staining patterns, which are associated with different degrees of chromatin maturation. These results confirmed that it is feasible to collect vicuna semen using electroejaculation and to evaluate the ejaculates thus obtained. |
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