- dabble
- daily ration
- daily weight gain
- dam
- damper
- danger of infection
- dangerous to s.o.'s health
- dark house
- data dictionary
- data on the environment
- day hopper
- day silo
- day-old-to-death
- dead animals
- debeaking shears
- decentrally mixed air
- decentrally recirculating air
- decomposition
- decomposition
- deep litter
- deep litter house
- deep pit house
- deep-drawn
- deep-drawn trough
- deflector
- degree of finish
- delivery piping
- Department of Agriculture
- depopulation of hens
- desludging
- detachable front
- dewclaw
- diagnosis
- diagonal farrowing pen
- diarrhea
- dietry factors
- differential pressure
- diffuse fresh air supply system
- diffuser
- digest
- digestate
- digester
- digestibility
- digestible
- digestion
- dimout curtain
- direct combustion
- direction of transportation
- directional beam
- Directive for the Protection of Laying Hens
- dirt belt
- dirty egg
- disc
- discharge auger
- discharging auger
- disease
- disinfectant
- disinfecting mat
- disinfection
- dispensing speed
- displaced volume
- disposable syringe
- dispose of manure
- distributing auger
- district heating
- DOC
- docking
- doghouse
- door to open run
- DOS nipple
- dosing container
- dosing device
- dosing hopper
- double occupancy
- double spiral
- double-walled
- down
- draff
- drag auger
- drain
- drain hole
- draining away the dung and urine
- draw in
- Dried Distillers Grains with Solubles
- drinker
- drinker line
- drinker pipe
- drinker rinsing system
- drinker set
- drinker system
- drinking bowl
- drinking bowl on the ground
- drinking cup
- drinking facilities
- drip channel
- drip cup
- drip tray
- drip trough
- drip water trough
- dripping water
- drive-out aid
- drive-out at the front
- drop pipe
- droplet separator
- drum cleaner
- dry feed
- dry feed mixer
- dry feeder
- dry feeding
- dry matter
- dry matter content
- dry sow feed
- dry sow house
- dual purpose tank
- duck
- duck finishing
- duck production
- duckling
- due date
- dung
- dung water
- dunging and urine grid
- dunging grid
- dust bath
- dust bathing
- dyspnoea