Genesis 30:42

42 But when the weaker animals mated, Jacob did not put the branches there. So the animals born from the weaker animals were Laban's, and those born from the stronger animals were Jacob's.

Genesis 30:42 Meaning and Commentary

Genesis 30:42

And when the cattle were feeble, he put them not in
Or "when covered", as Menachem, that is, with wool, and so not so desirous of copulation with the males, nor so fit and strong for generation; and therefore he put not in the rods into the gutters, partly that he might have none feeble in his flock, and partly that he might not spoil Laban of his whole flock, strong and weak: so the feebler were Laban's, and the stronger Jacob's;
not only his flocks became more numerous than Laban's, but were a better quality.

Genesis 30:42 In-Context

40 Jacob separated the young animals from the others, and he made them face the streaked and dark animals in Laban's flock. Jacob kept his animals separate from Laban's.

41 When the stronger animals in the flock were mating, Jacob put the branches before their eyes so they would mate near the branches.

42 But when the weaker animals mated, Jacob did not put the branches there. So the animals born from the weaker animals were Laban's, and those born from the stronger animals were Jacob's.

43 In this way Jacob became very rich. He had large flocks, many male and female servants, camels, and donkeys.