Crossbreeding programmes between indigenous and foreign breeds of farm birds is done to develop which of the following desirable characteristics?
Apis dorsata
The cross-breeding programs between Indian and foreign breeds of birds for variety improvement are focused on to develop new varieties with increased number and quality of chicks, increased tolerance to high temperature, low maintenance, reduction in the size of the egg-laying bird with the ability to utilise more fibrous cheaper diets formulated using agricultural by-products.