bottle feeding; formula feeding
Specifically refers to feeding an infant with formula or expressed milk from a bottle, as opposed to direct breastfeeding (母乳栄養).
See also: 母乳栄養
Since I couldn't produce breast milk, I switched to bottle feeding.
artificial nutrition; artificial feeding
Broader medical term for providing nutrients through non-natural means, such as tube feeding or intravenous nutrition, not limited to infants.
Severely ill patients may require artificial nutrition.