Invest in a commercial grinder. I can grind almost 100 lbs in 15 minutes. I usually buy body parts instead of whole birds also and just drop them down the grinder chute. It will pay for itself in time saved and you can also buy bone-in meats. Then I just pack it in containers or baggies. Depending on your size dog, a gallon ziplock will hold 6-7 lbs instead of packing individual servings. Pack what you can use in 3 days. I already had 16 oz Solo containers that I was using. You can get a roll of 25 or 50 at a restaurant supply store and of course they have different sizes. They are re-usable and are ok in the dishwasher top rack. I get mine at AceMart Restaurant Supply.
I grind into a large gray tub like restaurants use for bussing tables. Can be found at SamsClub or other stores or restaurant supply stores. That way I have room to mix the grind up with my hands then I use a big ice cream scoop for portioning. There are various sizes at a restaurant supply store. I only have to clean the grinder parts, the big tub and utensils.
