It is adopted during growing period of layers or breeders. There are two types of restricted feeding.
1) Quantitative feed restriction
In which the amount of feed is reduced below the normal requirement of birds. This can be done on day-to-day basis or skip-a-day programme or skip-two days in a week programme. But this restriction depends on the matching of the flock average body weight with standard body weight provided by the breeder.
2) Qualitative feed restriction
In which the quality of the feed is reduced below the standard requirement of the bird. This can be done by including unconventional feeds or lesser nutrient feed ingredients in place of high protein or high energy diet. Here the quantity of allotment to the bird is not restricted.
During restricted feeding programme, provide more number of feeders and see that all the birds are taking feed simultaneously or otherwise dominant birds will take more amount of feed and the weaker will be subjected feed deprivation and hence the uniformity will be affected.
At a given age, growing pullets should have average body weight very closer breeder recommendations and at least 70% of the birds’ weight within 10% of flock average. Points to be considered for getting uniformity among growing pullets are,
1) Receive chicks of uniform weight.
2) Provide proper feeding, watering and floor space.
3) Change the feeder and waterer according to the age.
4) The height of the feeder and waterer should be at the back height of the bird.
5) Provide proper energy in the diet.
6) Sample weights of the pullets are taken at regular intervals and change the feed accordingly.
7) Provide proper feeding space, so as to all birds consume feed simultaneously.