英文關鍵字
agricultural
agriculture
animal
animals
artificial
battery
beak
bird
broilers
brown
business
cages
chick
chicken
chickens
chicks
cock
country
crowded
egg
eggs
equipment
farm
farming
feather
feed
feeding
food
fowl
hen
hens
incubation
incubator
indoors
industry
intensive
laying
livestock
meat
nest
organic
pen
philosophy
poultry
production
rooster
system