Mormon belief is based on LDS Scripture that teaches that suffering is the means by which sins are atoned. (D&C 19.16-19; 20.22) In Mormon thought, therefore, it is hard for them to contemplate why others do not understand something they take for granted.
On the other side of the picture is Jewish Scripture and tradition, namely the ethical treatment of animals and how this connects to the issue of sacrifice. This was the part of Jewish kashrut law known as Shechitah.
First, a sacrifice to God involving an animal cannot involve a suffering victim. It was forbidden under Shechitah. God never accepted suffering animals as atonement or animal blood from animals that were kept living. This is important because according to Christology all the sacrifices of the Temple pictured Christ’s atonement.
Shechitah is still practiced today in creating kosher meats where slaughtering strives to minimize the pain experienced by the animal before dying by a trained and certified religious Jew called a shochet who uses an extremely sharp knife called a challef. If unnecessary suffering is produced and death is not instantaneous, the meat will not be considered kosher.
This Jewish practice, carried down for thousands of years, has a place in history that shows that God would never accept a suffering victim as atonement. The idea that the suffering in the Garden of Gethsemane is the matching Christological type to the atonement offered on the altar would suggest that God wanted suffering animals and the blood of living, suffering victims offered at the Temple. The Mormon concept is therefore not compatible or even antitypical of the Jewish paradigm.
