| A | B |
|---|
| Artificial insemination | The deposition of spermatozoa in the female genitalia by artificial rather than by natural means. |
| Cloning | When cells or organisms are genetically identical to each other |
| Crossbreeding | The breeding of plants or animals that belong to different races |
| Embryo transfer | The removal of developing embryos from one female and their transfer to the uterus of another; it usually involves the superovulation of superior females and the transfer of their embryos in an attempt to increase the number of superior offspring. |
| Estrus synchronization | Using synthetic hormones to make a group of females come into heat at the same time. |
| Hand breeding (hand mating) | A system of animal breeding in which the breeder controls the number of times coitus is performed. |
| Heat | An animal in estrus that is ready to breed. |
| Heterosis | The amount of superiority observed or measured in crossbred animals compared with the average of their purebred parents; hybrid vigor |
| Hybrid vigor | The increase of size |
| Inbreeding | The mating of very closely related animals such as mother and son |
| Line breeding | Mating of selected members of successive generations among themselves in an effort to maintain or fix desirable characteristics. |
| Mate | To pair off two animals of opposite sexes for reproduction. Mating may be for a single season or for life. |
| Morphology | A branch of biologic science that deals with the forms |
| Motility | Active movement in artificial insemination of the sperm in a maleÕs semen. |
| Natural breeding | A system of breeding that pairs a live male and female; often referred to as live cover. |
| Pasture breeding (pasture mating) | A system of breeding that allows animals to mate at will in the pasture or field. |
| Superovulation | The stimulation of more than the usual number of ovulations during a single estrous cycle due to the injection of certain hormones. |
