A Creationist claim we can test

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Genesis 30:37-42

37And Jacob took him rods of green poplar, and of the hazel and chesnut tree; and pilled white strakes in them, and made the white appear which was in the rods.

38And he set the rods which he had pilled before the flocks in the gutters in the watering troughs when the flocks came to drink, that they should conceive when they came to drink.

39And the flocks conceived before the rods, and brought forth cattle ringstraked, speckled, and spotted.

40And Jacob did separate the lambs, and set the faces of the flocks toward the ringstraked, and all the brown in the flock of Laban; and he put his own flocks by themselves, and put them not unto Laban's cattle.

41And 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.

42But when the cattle were feeble, he put them not in: so the feebler were Laban's, and the stronger Jacob's.

So, two claims here:

1. Stronger animals bred with stronger animals result in strong animals, while weak with weak result in weak offspring.
2. Breeding unspotted animals in front of spotted objects will result in spotted offspring.

Claim 1 seems to be borne out by experience, but what about claim 2? Do Creationists honestly believe that this experiment would work? And if not, isn't that denying the word of God?