How to manage a commercial grainage ?
• For conducting a commercial grainage two separate room should be arranged, one for cocoon preservation (size- 30 ft X 20 ft) and other for egg laying (size-40 ft X 15 ft). • The grainage should be attended in the evening-night hours. • The emerged male and female moths should be collected and kept in the moth cages for natural pairing. • The paired moths should be collected and tied to khorika (egg laying device) for egg laying. • The remaining unpaired moths should be collected and paired mechanically and then tied to the khorika in early morning of the next day for egg laying.. • Pairing should be allowed at least for six hours and decoupled. • In case of shortage of male moths, decoupled male moths may be reused for the 2nd time mating allowing 2-3 hours intermittent rest period. • The female moths are allowed to lay eggs up to three days.
