Development
of appropriate Silkworm Rearing Technology for the Region.Silkworm Physiology &
Rearing Technology Innovation Laboratory
SCIENTIST:
DR. JAYEETA SARKAR, Scientist-D
OBJECTIVES:
Development
of appropriate Silkworm Rearing Technology for the Region.
Designing
and development of simple Sericultural Appliances.
Working
on some physiological aspect of Silkworm.
Bio-assay
studies complementary to various Research Projects carried in the Institute.
RESOURCES:
Hot
Air Oven
Sartorius
Balance
Stereoscopic
Binocular
Compound
Microscope
Ordinary
Dissecting Binocular
Centrifuge
(Remi-make)
Air
Conditioners and Refrigerators
ONGOING PROJECTS:
1) AIP3421: Physio-Biochemical Characterization of Selected Silkworm Germplasm Accessions during Seed Crop Seasons.
Objective:
Physio-Biochemical Characterization of selected silkworm germplasm accessions for quality assessment and identification of physio-biochemical markers/ indicators, if any, for utilization by the silkworm breeders for screening the silkworm breeds.
2) PPA 3366: Development of integrated package for raising Chawki leaves and young age silkworm rearing for successful cocoon production
Objective:
Development of suitable package of practices for chawki garden to support the young age silkworm rearing for successful cocoon production
CONCLUDED PROJECTS:
1) APS 3238: Induction of trimoulting in bivoltine silkworm by physiologically active chemicals and their utilization as male parent for multi x bi hybrid preparation
Outcome:
Identification
of physiologically active chemical for inducing
trimoulting in bivoltine silkworm
Reduction
of larval period by 4–5 days in induced trimoulter by completely skipping of the
5th instar, thereby
increasing the survival percentage during adverse seasons.
The
number of cocoon in one kg was much higher in trimoulter (1978 & 1401 in YB & NB4D2 respectively)
in comparison to control (649 & 602 in YB & NB4D2 respectively),
which is helpful for grainage.
As
the rearing performance of N x Tri (Bi) was found at par with N x Bi hybrid,
trimoulter bivoltine male may be utilized safely for producing multi x bi dfls.
2) APR
3250: Development of rearing
package for optimizing cocoon yield in
Outcome:
A season specific silkworm rearing technology
suitable for agro-climatic condition of
Recommendation For Chawki Rearing:
Method of Rearing:
Low Humid Season: Box rearing
High Humid season: Open type of Shelf Rearing
Spacing: 6 - 54 sq.ft./100 dfls
Larval Density: 8900 to 750 per sq.ft.
Recommendation For Late Age Rearing:
Spacing between the trays : 9 inches.
Frequency of feeding:
4 times (Low Humid season)
3 times (High Humid season.)
Bed spacing: 396 sq.ft. /100 dfls
Larval density: 100 larvae /sq.ft.
Recommendation For Mounting:
Type of Mountage: Plastic Collapsible mountage for all the crop seasons.
Larval Density: Multi x Bi hybrids - 50 larvae per sq. ft.
Multi x Multi - 60 larvae per sq. ft.
Programme: Refinement of seed technology package of SSTL, Kodathi for
implementation
in
Out come:
Separation
of sex of different Nistari lines at
cocoon stage based on cut-off point
Standardization
of no. of moths required per square feet for loose egg preparation.
Standardization
of no. of grains per gram in different crop seasons.
FARMERS’ NEED BASED TECHNOLOGIES DEVELOPED:
Silkworm
Egg Box (Patented)
Low
Cost Incubation Pot
Low
Cost Rearing Tray (Provisionally
Patented)
Acid
Treatment
Lime
Duster
Mulberry
Twig Chopper
Low
Cost Hygrometer