
The litter of Bordeaux that I had ,had an average weight of 7.3kg at 8 weeks, when they were at the vet on Friday for there final vet check, and we got them all weighed. I would get a second opinion from another vet, have you still got her on 4 meals a day, Do you give her a teaspoon of natural yogurt on her food once a day this may help her digestion, you could try cracking a free range egg on the top of her food this may encourage her to eat. I think last time we spoke she had tummy upset. I would definately try a different diet, have you thought about BARF feeding, with tripe, chicken wings, the smell may attract her to her meals, Is she happy and playfull, do's she look health,I think you said your mum had a puppy from the same breeding, is her puppy on the same food, as you said that her puppy had a great deal of difference in weight. Did you contact your breeder for her opinion, were the pups an even size when you picked them up from the breeder or was she smaller then.
When you picked her up from the breeder was the mum small, as there are a few smaller bordeaux about, but I would get her check out by another vet, is she wormed about every 2 weeks