Improvement strategies in ovine artificial insemination
| Autor: | E. Anel, V. Garcia-Macias, Mercedes Alvarez, Luis Anel, P. de Paz, Felipe Martínez-Pastor |
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| Přispěvatelé: | Biologia Celular, Facultad de Ciencias Biologicas y Ambientales |
| Rok vydání: | 2006 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Cell Survival medicine.medical_treatment media_common.quotation_subject Fertility Semen Biology Insemination Medium term Andrology Endocrinology Refrigeration medicine Animals Cell survival Insemination Artificial media_common Gynecology Sheep Sperm Count urogenital system Artificial insemination Sperm Predictive value Spermatozoa Inseminación artificial Ganado ovino Animal Science and Zoology Female Veterinaria Biotechnology Semen Preservation |
| Zdroj: | Reproduction in domestic animals = Zuchthygiene. 41 |
| ISSN: | 1439-0531 |
| Popis: | P. 30-42 Artificial insemination in ram is scarcely widespread comparing with other domestic species. This has been due not only to fertility results being irregular and low but also because of the difficulty in the application of enhancements such as the use of frozen‐thawed sperm. Although there is a lot of information on the use of different options to improve these AI results (such as transcervical application, the use of thawed sperm, etc.) commercial programmes can be classified on two general categories: those using refrigerated semen (15°C) by superficial intracervical deposition (vaginal), and, more restricted, those using thawed sperm by intrauterine deposition (laparoscopy). In the present work, we have summarized our viewpoint on three general research lines for the improvement of AI results in sheep: semen preservation, AI procedures and semen assessment. Briefly, in ram it is necessary to develop a medium term methodology of sperm refrigeration (3–5 days), which would allow the distribution of sperm doses to a widespread area. Nevertheless, it is also necessary to develop an intrauterine transcervical AI technique, which allows thawed semen to be applied by vaginal insemination. Besides, the low predictive value of classic assessment techniques limits the ability to adjust the number of spermatozoa per dose according to its actual fertility. |
| Databáze: | OpenAIRE |
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