창세기 30:39 해설: Rashi, Rashbam, Radak & Chizkuni

אל המקלות means at the sight of the rods.

ויחמו הצאן, this is a masculine construction.

ויחמו, a reference to the males. However, as we learned earlier, the females would be in heat simultaneously.

עקודים RING-STRAKED — the word is connected with the root עקד “to bind” — differently coloured at that place where they are bound, viz., the ankles of the forelegs and hindlegs.