Genesis 30:41-43

Amplified Bible

⁴¹ Furthermore, whenever the stronger [animals] of the flocks were breeding, Jacob would place the branches in the sight of the flock in the watering troughs, so that they would mate and conceive among the branches; ⁴² but when the flock was sickly, he did not put the branches there; so the sicker [animals] were Laban’s and the stronger Jacob’s. ⁴³ So Jacob became exceedingly prosperous, and had large flocks [of sheep and goats], and female and male servants, and camels and donkeys.