Sericulture Technology :: Rearing House


Rearing House

  • A separate house is ideal for rearing of silkworm
  • The rearing house should have sufficient number of windows to permit cross ventilation.
  • Provision should be made to make it air tight for proper disinfection.
  • Rearing house has to be built in such a way to provide optimum temperature of 26-28º c and RH of 60-70% for the growth of silkworm at minimum operational cost

Important principles
The most important principles to be remembered in silkworm rearing house are :
            *           Damp condition
            *           Stagnation of air
            *           Direct and strong drift of air
            *           Exposure to bright sun light and radiation
            *           An equable temperature and humidity
            *           Good ventilation.


  • Rearing house should be built depending on the brusing capacity and the method of rearing. The rearing area of 2 sq.ft/ dfl for floor rearing and 3 sq. ft/ dfl for shoot rearing is the general criteria.
  • Rearing house should have a main rearing  hall, an ante room (8 x 8 ft) and leaf preservation room. Maintaining a separate chawki room (a must for two- plot rearing system; rearing room of size 10’ x 14’ with a height of 9-10 ft for an acre of garden) ideal.
  • Rearing house should face east-west direction.
  • Rearing houose should have facilities to maintain the required environmental conditions.
  • Growing trees around rearing house helps to maintain favourable environment
  • Rearing house should be constructed taking consideration he following points such as effective is disinfection, washable floor, etc.
  • 480 sq.ft area is required for rearing 100 dfls.

Preparation of rearing house

  • Rearing room is to be kept ready after disinfection atleast 3-4 days in advance of commencement of rearing.
  • Preconditioning of the rearing house is essential ie, arrangement of rearing appliances and provision of essential environmental conditions one day in advance.

Preparation for brushing

  • Before commencement of each rearing, the rearing equipments and rearing houses must be thoroughly washed and disinfected with chlorine dioxide.
  • Chlorine dioxide is sprayed on equipments, walls, roof and floor uniformly to destroy the disease causing organisms.
  • The rooms should be kept closed for about 24 hours after disinfection.
  • The doors and windows should be kept open at least for 24 hours before commencement of rearing to avoid traces of disinfectants.
  • To disinfect rearing room and rearing appliances, chlorine dioxide can be used.  500 ml of chloride dioxide is mixed with 50 g of activator and this is dissolved in 20 litres of water.  To this, 100 g of lime powder has to be mixed.

Rearing appliances

Non recurring (General)

  • Disinfection mask and protective gum shes
  • Sprayer for disinfection
  • Room heater
  • Water air cooler
  • Kerosene blow lap
  • Wet and dry thermometer
  • 6” forceps

Non-recurring (specific)

  • Egg transportation box
  • Egg incubation chamber
  • Loose egg incubation frame
  • Black box
  • Chawki rearing trays
  • Rearing bottom stand
  • Feeding Stand
  • Ant wells
  • Leaf chopping board
  • Leaf chopping knife
  • Leaf mat
  • Bed cleaning nets
  • Earthen pot
  • Litter basket
  • Late age rearing trays
  • Rearing stand
  • Shoot rearing rack
  • Chandrike
  • Plastic basin
  • Buckets
  • Mug
  • Plastic box
  • Foam pads
  • Foot rugs
  • Leaf chamber for late age
  • Leaf basket
  • Cleaning nets


  • Paraffin paper
  • Formalin
  • Bleaching powder
  • Lime powder
  • Bed disinfectants
  • Slides and cover slips
  • Gunny cloth
  • Cora cloth
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