The phrase "are frequently fed" is correct and usable in written English.
It can be used to describe a regular action where something is provided food or nourishment, often in a passive context.
Example: "The animals in the sanctuary are frequently fed to ensure their health and well-being."
Alternatives: "are often given food" or "receive regular feedings."
The resulting corn and soy are frequently fed to animals intended for human consumption, or routed into processed foods as corn starch, corn syrup, soy lethicin and dozens of other derivatives.
On a given night, one can see a great performer at the Magic Castle, but all too often the club is a tepid swamp of gossip, self-congratulation, and artistic larceny — a place where audiences who don't know better are frequently fed a bland diet of purloined ineptitude.
As neonates are frequently fed reconstituted powdered infant formula (PIF), which is not a sterile product, this potential vector has been the focus of attention for reducing infection risk to neonates as the number of exposure routes is limited.
In volcanic-hydrothermal areas, the CO2 soil diffuse degassing is frequently fed by multiple gas sources, such as biological and volcanic (ref. 29 and references therein).
It is frequently fed in combination with oats and corn, a mix informally referred to by the acronym "COB" (for Corn, Oats and Barley).
Haylage, also known as Round bale silage is a term for grass sealed in airtight plastic bags, a form of forage that is frequently fed in the United Kingdom and continental Europe, but is not often seen in the United States.
Due to economic considerations, milk that is not suitable for sale is frequently fed to dairy calves.
During the dry season, individuals are frequently seen feeding from Erythrina and Inga flowers, while they frequent Heliconia flowers during the wet season.
These two visions are far from mutually exclusive; they are frequently allied, or feed off each other.
Hoary Pufflegs are territorial and are frequently seen by themselves feeding in dense parts of the understory, especially near streams.
Pre-lacteal feeds are frequently given, and breastfeeding delayed, even in institutional deliveries where support is limited.
