Efecto del volumen lúteal sobre el porcentaje de implantación de embriones congelados de la raza hereford, en hembras receptoras de la raza normando, en el municipio de Cogua, departamento de Cundinamarca
The aim of this study is to evaluate the effect of luteal volume on the pregnancy rate in female recipient of the Norman breed Hereford frozen embryos. Materials and methods: 30 females of the Norman race were pre-selected, of which 25 met the inclusion criteria for entering the embryo transfer prog...
| Autor Principal: | Salazar Prieto, Julio Roberto |
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| Otros Autores: | Bernal Betancourt, Hamer |
| Formato: | info:eu-repo/semantics/bachelorThesis |
| Idioma: | spa |
| Publicado: |
Universidad de La Salle. Facultad de Ciencias Agropecuarias. Zootecnia.
2017
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| Materias: | |
| Acceso en línea: |
http://hdl.handle.net/10185/18574 |
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| Sumario: |
The aim of this study is to evaluate the effect of luteal volume on the pregnancy rate in female recipient of the Norman breed Hereford frozen embryos. Materials and methods: 30 females of the Norman race were pre-selected, of which 25 met the inclusion criteria for entering the embryo transfer program previously synchronized with a protocol for TETF. Results: Of the 25 females 80% (n = 20) responded appropriately (single or double ovulation) and 20% (n = 5) did not respond (multifollicular dominant and multifollicular ovaries). Half (50%) were synchronized cows ovulated and became pregnant (n = 10). 66% of cows that became pregnant had double ovulation, still less (47%) in females who presented single ovulation. The average diameter of the corpus luteum in pregnant cows was 23 mm (Sd 2.87 mm) and the average diameter of the corpus luteum in the non-pregnant cows was 20.8 mm (Sd 2.70 mm). The average volume of the corpus luteum in pregnant cows was 6642,8mm3 (Sd 2548.94 mm3) and the average volume of the corpus luteum in the non-pregnant cows was 4936,4mm3 (Sd 2157.19 mm3); there is no statistically significant difference, luteal diameters and volumes, betwen pregnant cows and not-pregnant cows. The relationship between ovulation and pregnancy the rate was higher in those presented double ovulation and those presented simple ovulation. Conclusions: We can not be established that the greater diameter or luteal volume is greater the percentage of pregnancy. It is observed that the pregnancy rate was higher in those presenting double ovulation, but was not statistically significant. |
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