Sericulture - Directorate General of Employment & Training

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LEVEL – I
1. Module Name: Pre-emergence Grainage Operator
2. Sector: Sericulture
3. Code: SER - 104
4. Entry Qualification Minimum 5 th Standard and 14 years of age
5. Terminal
Competency:
The successful candidate would be able to separate male and
female cocoons, preservation of cocoons/pupae and
synchronization of male and female moths.
6. Duration: 150 hours
7. Preface: Preservation and sexing of cocoons/pupae and preservation of
seed cocoons is an important activity to produce quality
silkworm eggs. Therefore, development of skill is important in
the pre-emergence grainage operations.
8. Job Profile: Employable In silkworm grainage and self employable
9. Course Content
Practical Competencies Under Pinning Knowledge (Theory)
‣ Identification of different silkworm ‣ Knowledge about the races used in
races used in egg preparation.
the grainage
‣ Deflossing and sorting of seed
cocoons
‣ Selection of places to store different
seed cocoons.
‣ Learning the method of fixing the
weight of male and female cocoons
of the given lot.
‣ Identification of male and female
cocoons based on cocoon colour in
sex linked breeds.
‣ Principles of separation of male and
female cocoons/pupae and their
preservation.
‣ Storing bivoltine and multivoltine
seed cocoons separately in the
grainage.
‣ Care during preservation of seed
cocoons and pupae.
‣ To learn the need for separate
emergence room for BV and MV
seed cocoons.
‣ Practicing weighing of cocoons and
segregation of male and female
cocoons.
‣ Skill to use exhaust fan, wet and dry
thermometer, hygrometer, thermo
hygrograph, heater /cooler,
humidifier etc., in grainage.
‣ Practicing cocoon cutting for easy
‣ Sexing based on cocoon weight,
colour and larval markings.
‣ Principle of fixing weight of male
and female cocoons of a given lot.
‣ Basic knowledge about cocoon