Servicios Personalizados
Revista
Articulo
Español (pdf)
Articulo en XML
Referencias del artículo
Traducción automática
Enviar articulo por emailIndicadores
Citado por SciELO 
Accesos
Links relacionados
Citado por Google 
Similares en
SciELO 
Similares en Google
Compartir
Permalink
CES Medicina Veterinaria y Zootecnia
versión On-line ISSN 1900-9607
Resumen
PARDO-CARRASCO, Sandra et al. Cryopreservation of Trans-Andean shovelnose catfish (Sorubim cuspicaudus) semen using dimethylacetamide. Ces. Med. Vet. Zootec. [online]. 2015, vol.10, n.2, pp.122-131. ISSN 1900-9607.
Cryoprotectant solutions of dimethylacetamide (DMA) were used at three inclusion levels (8, 10, and 12%) to evaluate cryopreservation of Trans-Andean shovelnose catfish semen. The solutions also included 6% glucose and 5% skimmed milk powder. Osmolarity of the solutions was measured with an osmometer (Precision System, Osmomette III, USA). Semen was diluted at a 1:4 ratio (semen:solution) and frozen in nitrogen vapors using a dry shipper (MVE 4/2V, USA). Concentration, mobility, speed, and progressivity of cryopreserved and fresh semen (control) were assessed with the SCA® Sperm Class Analyzer (Microptic, Spain) computer-assisted program. Fertility and hatching were evaluated fertilizing one gram of oocytes with cryopreserved and fresh semen, which was then kept in 2L cylinder-conical incubators. The osmolarity of cryoprotective solutions was 1233.3 ± 23.1 mOsm/Kg (8%DMA), 1530 ± 0.0 mOsm/Kg (10% DMA), and 1627.7 ± 5.8 mOsm/Kg (12% DMA). Fresh semen showed better total mobility (99.6 ± 0.4%), percentage of rapid sperm (34.7 ± 12.2%), and progressivity (48.2 ± 12.8%), compared with cryopreserved semen (p<0.05). Cryopreserved semen with 8% DMA had the highest total mobility (55.4 ± 13.6%) (p<0.05) as well as the highest percentage of rapid sperm (1.5-2.5%), total progressivity (1.9 to 10.1%), and curvilinear velocity (29,5-35,9 μm/s) without significant difference with the evaluated DMA percentages (p> 0.05). Fertilization with fresh semen (19.5 ± 4.4%) and 8% DMA cryopreserved semen (17.8 ± 8.3%) were not different (p>0.05). A cryoprotective solution composed of 8% DMA, 6% glucose, and 5% skimmed milk powder is a viable alternative to cryopreserve Trans-Andean shovelnose catfish semen.
Palabras clave : Cryopreservation; dimethylacetamide; milt; pimelodidae; reproduction; semen.
