noun
animal by-product
Refers to materials derived from livestock that are not primary products like meat or milk, such as hides, bones, or offal. Used in agricultural, industrial, and regulatory contexts.
畜産副産物の有効利用が求められている。
Effective utilization of animal by-products is being called for.
この工場では畜産副産物から肥料を作っている。
This factory makes fertilizer from animal by-products.
副産物 is a general term for 'by-product' from any process, while 畜産副産物 specifically refers to by-products from livestock farming.
Compound of 畜産 (livestock farming) and 副産物 (by-product).