English to German Bus/Financial Livestock / Animal Husbandry

Hello dear colleagues,

from an article about how weight variation in pig production affects profitability. This is a rather business/economics heavy article. Lighter pigs mean lighter (smaller) prime cuts mean less profit.

Is the harvest buying scheme the slaughterhouse buying the live animals from the producer? And what would be the German term for this? Or is it at wholesale level? Thank you!

"...many ***harvest buying schemes*** differentially reward producers for pigs in differing live or carcass weight classes..."