12 you shall set apart to the LORD all that first opens the womb. All the firstborn of your livestock that are males shall be the Lord's.To redeem to God means to transfer ownership to him. Since god is not a real person, it does not imply consecration into the priesthood, especially with animals involved. It means they were sent off to God's world by fire. Or this confirmation of ritual child sacrifice:
13But every firstborn donkey you shall redeem with a sheep; if you do not redeem it, you must break its neck. Every firstborn male among your children you shall redeem.
14When in the future your child asks you, 'What does this mean?' you shall answer, 'By strength of hand the LORD brought us out of Egypt, from the house of slavery.
15When Pharaoh stubbornly refused to let us go, the LORD killed all the firstborn in the land of Egypt, from human firstborn to the firstborn of animals. Therefore I sacrifice to the LORD every male that first opens the womb, but every firstborn of my sons I redeem. (Ex. 13:12-15)
29You shall not delay to make offerings from the fullness of your harvest and from the outflow of your presses. The firstborn of your sons you shall give to me.I tell my daughter she's lucky she's a girl. If she was a boy, she'd have to have been sacrificed in those good old "moral bible days."
30You shall do the same with your oxen and with your sheep: seven days it shall remain with its mother; on the eighth day you shall give it to me. (Ex. 22:29-30)