Parallel
Genesis 30:41
Brenton's English Septuagint · Berean Standard Bible
And it came to pass in the time wherein the cattle became pregnant, conceiving in the belly, Jacob put the rods before the cattle in the troughs, that they might conceive by the rods.
Whenever the stronger females of the flock were in heat, Jacob would place the branches in the troughs, in full view of the animals, so that they would breed in front of the branches.