'Zǐ chù' literally combines 'zǐ' (offspring, young) and 'chù' (livestock or domesticated animal), referring specifically to animals raised not for immediate slaughter or labor, but for breeding purposes—such as young sows, boars, heifers, or rams selected to produce future generations of livestock. This term emphasizes reproductive value and genetic potential rather than meat yield or work capacity.

It is commonly used in agricultural, veterinary, and livestock management contexts in China, especially when discussing herd improvement, artificial insemination programs, or government subsidies for breeding stock. Unlike general terms like 'jiāqín' (poultry) or 'shòu' (beast), 'zǐ chù' carries a technical, functional connotation tied to reproduction and long-term farm planning. It does not refer to pets or wild animals, nor to animals already in production—only those designated and managed for breeding.