When you bring your new Border Collie puppy home, it will only be about 8 weeks old. Your new puppy will grow rapidly but it only has a small stomach so needs feeding several small meals a day.
Always watch how much you feed your puppy. Some puppies need more or less than the recommended feeding guide. If your puppy leaves food uneaten you know not to feed so much next time. The best indication that your puppy is healthy is if it is full of energy during play time, has a healthy coat, bright eyes, and firm stools....

How to tell if your Puppy has Overeaten
If your Border Collie overeats, it will look bloated and want to relieve itself more often. It is really important not to overfeed your pup as it can cause structural problems as it grows. Adult dogs that are overfed can have shorter lives, poor health and no energy.
Get into the habit of feeding puppy’s total food needs over the day and make sure you factor in any treats you give your pup as well. Take into account how old your Border Collie is, as well as what an average Border Collie needs to grow into a healthy adult dog.

A Guide to Feeding your Border Collie Puppy
Now your puppy is home, it is time to make sure you know how to feed it to give it the best start in life.
Feed small meals throughout the day, gradually reducing them to one a day for an adult dog. Do not feed your puppy just before it is going to have a play period. Try to feed it just before it goes to sleep.

From 6 to 12 Weeks
Here is an example of how to feed your new Border Collie puppy, remember, never feed your puppy milk as dogs are lactose intolerant and it will make them sick.
In the morning: cereal, a couple of egg yolks a week, calcium
At lunchtime: dry puppy food soaked in water
Afternoon tea: dry dog biscuits and milk substitute
Dinner: around 100 gm of raw mince or diced chicken or raw chicken necks, a few table scraps
Also start introducing a raw meaty bone into your puppy’s diet, something like a raw chicken wing. Never, ever feed your dog cooked bones. Just supervise the first few times you give bones to make sure your puppy copes with it alright.

From 3 to 6 Months
In the morning: a good complete dog food (not kibble) or use brown rice mixed with calcium
At lunchtime: dog biscuits with a milk substitute
Dinner: meat or chicken with complete dog food, table scraps and calcium
Introduce more soft bones into your dog’s diet like raw kangaroo and turkey wings a couple of times a week.

From 6 to 9 Months
In the morning: dog biscuits
At night: meat and table scraps mixed with dry dog food or brown rice, and calcium and a couple of egg yolks a week
Feed a raw bone a couple of times a week as well.

Over 9 Months
Dinner: Keep feeding dinner as you have been but drop the meal in the morning. Quantities to feed are around 2 cups of dry food, a cup of raw meat, a couple of eggs and a couple of raw bones a week.
This is a guide only and you have to watch how your Border Collie puppy develops and adjust amounts as needed. Your puppy should be alert, happy and playful.

If you have any questions or concerns, talk to your breeder or take puppy to the vet for a checkup.

Note: You breeder should provide you with basic information on what your puppy's diet is at the time of collection and a feeding regime for your puppy.