at present i.m feeding my bitch burns lamb/brown rice it suits her very well but she,s nearly 4 weeks since mating don.t know yet if she,s having pups but if she is will i have to change her to a more protein one? i know burns do an extra  i also know i.ll have to increase her intake from 5/6 week

If you contact Burns they will send you free samples (always good ;) ) and a booklet explaining the different foods etc.  They also have a website where you can ask questions :) and find out more about their foods :D

http://www.burns-pet-nutrition.co.uk/store/index.html