Genesis 30:41

41 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.

Genesis 30:41 Meaning and Commentary

Genesis 30:41

And it came to pass, whensoever the stronger cattle did
conceive
Whose limbs were well compact, and were strong and healthy: that Jacob laid the rods before the eyes of the cattle in the gutters,
that they might conceive among the rods;
and bring forth party coloured ones, and such as were robust and strong like themselves; and this was another device of Jacob's to get the best of the flock. Aben Ezra thinks this refers to the two seasons of the year, when the flocks conceived; the one was in Nisan, in the spring, and such as were brought on that conception were strong, and therefore Jacob chose to lay the rods in the gutters at that time, that he might have the best cattle; and so the Targum of Jonathan calls these here the forward ones, as it does those in ( Genesis 30:42 ) we render feeble, the latter ones; which, according to Aben Ezra, conceived in Tisri or September, and what they brought were weak and feeble. (Based on the laws of genetics, Jacob's breeding of the best of the flock would produce higher quality offspring. Ed.)

Genesis 30:41 In-Context

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.

41 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.