The main difference in preparing meat chunks versus ground meat is as follows:
With ground meat, you can prepare enough meat to last 3 or 4 days whereas with meat chunks, it is best to prepare enough meat to last 1 day.
Why? Well, it all has to do with moisture. With ground meat we can actually add moisture to the meat and we don't need to worry about blood or moisture separating from the meat. Why you ask again? Because we can easily stir the moisture and/or blood back into the ground meat.
With meat chunks, you simply cannot stir the blood and/or moisture back into the meat. So if we thaw just enough meat chunks to last a day, then we don't loose as much moisture and/or blood from the meat.
With meat chunks, it's better to thaw slightly more than what your pet or pets will eat. As mentioned in Part 1 on the page about how much to feed dogs and cats
, we want to feed our pets as much as they want at each meal until they walk away from the bowl with some food left in it. So this is why we want to have a little more than what our pet or pets will eat in a day. Should there be, after feeding, a significant amount left over, then save it for the next day — it's not the end of the world if some moisture and/or blood separates from the meat. At the same time, if most of the food is eaten but not all, then feed the rest during the day as a small snack and then feed a fresh batch of meat at their next big meal.