ÍNDICE DE PRENHEZ COM SÊMEN CONGELADO DE GARANHÕES DA RAÇA CRIOULA USANDO GLICEROL OU DIMETILFORMAMIDA COMO CRIOPROTETORES
| Autor: | Rodrigo Arruda Oliveira, Mara Iolanda Batistella Rubin, Carlos Antonio Mondino Silva |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Ciência Animal Brasileira, Vol 14, Iss 4, Pp 488-494 (2013) |
| Druh dokumentu: | article |
| ISSN: | 1518-2797 1809-6891 |
| DOI: | 10.5216/cab.v14i4.18923 |
| Popis: | Pregnancy rates using stallions’s frozen semen are variable; moreover, some breeds present low freezability. One hundred and four (104) mares were inseminated and separeted into two experiments to evaluate fertility of frozen semen’s of Criollo stallions (n=5), with 5% of dimethylformamide (DMF) or 5% of glycerol (GLY) as cryoprotectants. In Experiment I, the inseminations were made during pre-ovulation with fresh and frozen semen with DMF. In Experiment II, the mares were inseminated during post-ovulation with fresh semen, DMF and GL. The inseminations with frozen semen were performed deep in the uterine horn ipsilateralis to the dominant follicle. Control mares were inseminated with fresh semen in the uterus. Only one estrus period per mare was used to evaluate the pregnancy rates of the groups. Pregnancy diagnosis through ultrasonography was performed on the 15th day post-ovulation. The mean post-thawing motility was 40% and 20%, respectively, for frozen semen with DMF and GLY (P |
| Databáze: | Directory of Open Access Journals |
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