Influence of corpus luteum and ovarian volume on the number and quality of bovine oocytes |
| |
| Authors: | Jurandy Mauro Penitente‐Filho Carolina Rodrigues Jimenez Adriana Moreira Zolini Erly Carrascal Jovana Luiza Azevedo Camila Oliveira Silveira Fabrício Albani Oliveira Ciro Alexandre Alves Torres |
| |
| Institution: | 1. Department of Animal Science, Universidade Federal de Vi?osa, Vi?osa, Minas Gerais, Brazil;2. Department of Veterinary, Universidade Federal de Vi?osa, Vi?osa, Minas Gerais, Brazil |
| |
| Abstract: | In order to evaluate whether ovarian volume, presence and diameter of the corpus luteum (CL) have effects on the number and quality of bovine recovered oocytes, 110 ovaries were obtained from the slaughterhouse. Cumulus oocytes complex were aspirated and evaluated under stereomicroscope. Oocytes were counted and classified according to their quality (Grades I, II, III and IV). Ovarian volume was weakly correlated to the number of good quality oocytes (P < 0.05). Ovaries with CL showed greater numbers of good quality oocytes than ovaries without CL (P < 0.05). Further, presence of CL and its diameter positively influenced the probability of recovering good quality oocytes (P < 0.05). In conclusion, ovarian volume is not a good parameter itself to predict important ovarian characteristics; moreover, analysis of CL, its presence and diameter, may be a good tool to improve efficiency on in vitro embryo production programs. |
| |
| Keywords: | bovine reproduction embryo production ovary reproductive efficiency |
|
|
