Hi Jonathan,
Well this happens almost every time when there is transition in food.
So, let me tell you some practical deals
How to Change Your Dog’s Food
Switching your dog’s food abruptly can cause gastrointestinal upset such as vomiting, diarrhea, and a decreased appetite. Any time you decide to change your dog’s food, you should transition to the new diet gradually in order to give your dog’s system time to adjust to the change. Ideally, these transitions should happen over 5-7 days. During this transition, you will gradually incorporate more and more of the new food by mixing it with your dog’s current diet. For most dogs, a good diet transition will look like this:
Day 1: 25% new diet and 75% old diet.
Day 3: 50% new diet and 50% old diet.
Day 5: 75% new diet and 25% old diet.
Day 7: 100% new diet.
Some dogs with sensitive stomachs, food allergies, or other gastrointestinal diseases may need an even longer transition period. The key to a good diet transition is monitoring your dog’s individual response. If, at any point during the diet transition, your dog displays concerning signs such as changes in appetite, vomiting, or diarrhea, you should proceed more slowly. And if you have transitioned gradually and your dog is still experiencing stomach upset, it is best to consult with your veterinarian. In some cases, it may be necessary to choose a different diet.
