Cross References → Genesis 30:39

they mated in front of the branches. And they bore young that were streaked or speckled or spotted.

they bore young

Genesis 31:9-12,38,40,42
Thus God has taken away your father’s livestock and given them to me. When the flocks were breeding, I saw in a dream that the streaked, spotted, and speckled males were mating with the females. In that dream the angel of God said to me, ‘Jacob!’ And I replied, ‘Here I am.’ ‘Look up,’ he said, ‘and see that all the males that are mating with the flock are streaked, spotted, or speckled; for I have seen all that Laban has done to you. ... I have been with you for twenty years now. Your sheep and goats have not miscarried, nor have I eaten the rams of your flock. ... As it was, the heat consumed me by day and the frost by night, and sleep fled from my eyes. ... If the God of my father, the God of Abraham and the Fear of Isaac, had not been with me, surely by now you would have sent me away empty-handed. But God has seen my affliction and the toil of my hands, and last night He rendered judgment.”
Exodus 12:35-36
Furthermore, the Israelites acted on Moses’ word and asked the Egyptians for articles of silver and gold, and for clothing. And the LORD gave the people such favor in the sight of the Egyptians that they granted their request. In this way they plundered the Egyptians.