| ≥1 piece |
The major factors are the colony size and the number of royal Jelly-collecting bars set in the colony. The black, boue, deep green and violet cell-cup seemed to produce more Royal Jelly than that of currently recommended yellow cup now, and the former are easier for operation. The larval age and collecting time also affect the royal jelly yield. Two-day-old larvae used in the production of royal jelly had a higher yield than those larvae of different age group in a 1~2 day collecting period. And the wax height of cell cup increased with an increase in royal jelly collecting time. In addition, the royal jelly production of larval comb was higher than that of sealed comb. Natural tea pollen and formula B. showed better results of royal jelly production, acceptance of queen cup, and food consumption than formula C. A higher royal jelly yield could be obtained when the bee colony was treated with Beeline. To set up 2 royal jelly collecting-frame and collect each other in a 24 hrs interval is recommended for best production.