pregnancy — the state, condition, or quality of being pregnant.
productivity — the quality, state, or fact of being able to generate, create, enhance, or bring forth goods and services: The productivity of the group's effort surprised everyone.
virility — the state or quality of being virile; manly character, vigor, or spirit; masculinity.
abundance — An abundance of something is a large quantity of it.
copiousness — large in quantity or number; abundant; plentiful: copious amounts of food.
fecundity — the quality of being fecund; capacity, especially in female animals, of producing young in great numbers.
fruitfulness — producing good results; beneficial; profitable: fruitful investigations.
puberty — the period or age at which a person is first capable of sexual reproduction of offspring: in common law, presumed to be 14 years in the male and 12 years in the female.