| AI | Artificial insemination |
| GnRH | Gonadotropin-releasing hormone |
| eCG | Equine chorionic gonadotropin |
| LH | Luteinizing hormone |
| β-NGF | β-Nerve growth factor |
| TCG | Tris-citric acid-glucose |
| FITC-PNA | FITC-labelled peanut agglutinin |
| PI | Propidium iodide |
| LSM | Least square mean |
| SEM | Standard error of the mean |
| GLM | General linear model |