noun
cattleman; cattle farmer; raising cattle
Refers both to a person who raises cattle and to the activity of cattle farming. The context usually makes the meaning clear.
彼の祖父は牛飼いだった。
His grandfather was a cattleman.
この地域では牛飼いが盛んだ。
Cattle farming is thriving in this region.
Compound of 牛 (ushi, 'cattle') and 飼い (kai, the noun form of 飼う, 'to raise'). The meaning is transparent from its components.