Genesis 30:41

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

40 Jacob set apart the young, but made the rest face the streaked dark-colored sheep in Laban’s flocks. Then he set his own stock apart and did not put them with Laban’s animals.

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.

42 But if the animals were weak, he did not set out the branches. So the weaker animals went to Laban and the stronger ones to Jacob.

43 Thus Jacob became exceedingly prosperous. He owned large flocks, maidservants and menservants, and camels and donkeys.

Here the Bible tells a story about someone else. Ask yourself what it can say to us today. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
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.
KJV
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.
WEB
Whenever the stronger of the flock conceived, Jacob laid the rods in front of the eyes of the flock in the watering troughs, that they might conceive among the rods;
ASV
And it came to pass, whensoever the stronger of the flock did conceive, that Jacob laid the rods before the eyes of the flock in the gutters, that they might conceive among the rods;
DARBY
And it came to pass whensoever the strong cattle were ardent, that Jacob laid the rods before the eyes of the flock in the gutters, that they might become ardent among the rods;
BLB
And it came to pass whenever the strong of the flock conceived, that Jacob placed the rods before the eyes of the flock in the channels, that they might conceive in front of the ro ds.
ÅB
Og hver gang det sterke småfe parret seg, la Jakob kjeppene midt for øynene på dem i rennene, for at de skulle parre seg ved kjeppene;
OTB
Når de sterkere hunnene var i brunst, plasserte Jakob stavene i trauene foran dyrene, slik at de ville parre seg nær stavene;
B1930
Og hver gang det sterke småfe parret sig, la Jakob kjeppene midt for øinene på dem i rennene, forat de skulde parre sig ved kjeppene;

Study notes (Tyndale)

Original text and word study