Question: asking about preplanning of duck farming 
Answer: suggested to first selection of land with pond area secondly selection of breed like khaki campbell for egg production and white pekin for meat are the other popular breed ,these are prolific layers which can give up to 300 eggs per laying cycle. these birds are very much suitable for rural development programmes for sustainable economical development in rural areas. among the egg laying breeds, khaki campbell is the best producer. individual egg production of almost an egg a day in this breed for well over twelve months has been recorded and flock averages in excess of 300 eggs per duck per year are not uncommon. khaki campbell ducks weigh about 2 to 2.2 kg and drakes 2.2 to 2.4 kg. egg weight varies from 65 to 75 gm., white pekin . thirdly housing ....ducks do not require elaborate houses. the house should be well ventilated, dry and rat proof. the roof may be of shed type, gable or half round. it may have solid or wire floors. the wire floors are not popular with breeders. under semi-intensive system the house should have easy access to outside run as the ducks prefer to be outdoors during the day time and even during winter or rains. generally the proportion of night shelter to outside run is 1/4:3/4. the run should gently slope away from the houses to provide drainage. normally a continuous water channel of size 50 cm wide and 15-20 cm. deep is constructed at the far end, on both sides, parallel to the night shelter, in the rearing or layer house fourthly ...feeding and health care...ducks may be grown on dry mash, a combination of dry and wet mash or pellets. ducks prefer wet mash due to difficulties in swallowing dry mash. the pellet feeding, though slightly costly, has distinct advantages such as saving in amount of feed, minimum wastages, saving in labour, convenience and improvement in sanitary conditions. ducks are good foragers. the use of range, pond or supplementary green feed, reduces the feed cost. fifthly ...health care...breeder males and females are selected when they are around 6-8 weeks of age. for maximum fertility drakes should be older by 4-5 weeks than females. in flock mating a male female ratio of 1:6 to 1:8 is satisfactory with layer types of ducks while ratio should be narrower for meat type of ducks.