1 MOSEBOG 30:41

Og hver Gang de kraftige Dyr parrede sig, stillede Jakob Grenene op foran dem i Vandrenderne, for at de skulde parre sig foran Grenene;

And it came to pass, whensoever the stronger cattle did conceive, that Jacob laid the rods before the eyes of the cattle in the gutters, that they might conceive among the rods.