Until the very last book of the Old Testament: Malachi 3:10 “BRING YE ALL THE TITHES INTO THE STOREHOUSE, THAT THERE MAY BE MEAT IN MINE HOUSE, and prove me now herewith, saith the LORD of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.” [KJV] See? If it was in the form of money, they would bring the TITHES in the TREASURY and not in the STOREHOUSE, but as you could see, God said bring the TITHES into the STOREHOUSE, THAT THERE MAYBE MEAT IN HIS HOUSE or Temple, so it is quite clear that it is either a cattle or a sheep. So if you will ask me if the details of the said LAW changed? Not even a bit, It is quite clear that the people of Israel had maintained this LAW just how it was spoken by God to Moses in Mount Sinai.
Hebreo 9:13-14 “Sapagka't kung ang dugo ng mga kambing at ng mga baka, at ang abo ng dumalagang baka na ibinubudbod sa mga nadungisan, ay makapagiging banal sa ikalilinis ng laman: Gaano pa kaya ang dugo ni Cristo, na sa pamamagitan ng Espiritu na walang hanggan ay inihandog ang kaniyang sarili na walang dungis sa Dios, ay maglilinis ng inyong budhi sa mga gawang patay upang magsipaglingkod sa Dios na buhay?”