The term “gestation,” for instance, is derived from the Latin verb gestāre, used to describe a mammal carrying a burden.
He specifically defends the use of “gestation crates”— tiny pens where pregnant pigs live before giving birth.
How, then, can gestation happen if no one is carrying the fetus?
1530s, "riding on horseback, etc., as a form of exercise," from Latin gestationem (nominative gestatio) "a carrying," noun of action from gestare "bear, carry, gestate," frequentative of gerere (past participle gestus) "to bear, carry, bring forth" (see gest). Meaning "action or process of carrying young in the womb" is from 1610s.
gestation ges·ta·tion (jě-stā'shən)
The period of fetal development from conception until birth; pregnancy.