| A | B |
|---|
| Estrus | Period known as heat when the animal is receptive to be bred |
| Estrus cycle | Length of an animal's reproductive cycle from one estrus to the next |
| Cattle signs of heat | swollen vulva, frequent urination, mounting, and letting others mount |
| Swine signs of heat | Restlessness, frequent urination, vulva discharge, occasional loud grunting |
| Ovulation | release of ova (egg) from ovary at the beginning (day 1) of female’s cycle. |
| ova | egg |
| Dystocia | Abnormal or difficult birth |
| Parturition | Process of giving birth |
| Female hormones | estrogen & progesterone |
| Involution | Shrinkage of the uterus after childbirth |
| FSH | follicle stimulating hormone |
| LH | lutenizing hormone |
| embryo | unborn or unhatched offspring in the development process |
| fetus | unborn offspring |
| gestation | period when animal is pregnant |
| ovaries | produce ova and sex hormones (estrogen & progesterone) |
