You may present as a freewill offering an ox or sheep that has a deformed or stunted limb, but it is not acceptable in fulfillment of a vow.
Jewish Publication Society of America Version (JPS1917) - Leviticus 22:23 >Either a bullock or a lamb that hath any thing too long or too short, that mayest thou offer for a freewill-offering; but for a vow it shall not be accepted.