| Show operation of incubator Is outlined by purdue purdue university gives tho the following suggest suggestions lons for tho the operation of an incubator for successful incubation eggs should not bo be held more than 10 days before setting during incubation eggs require a uniform temperature moisture supply and fresh air temperatures between and degrees give tho the best beat results moisture end and ventilation are determined by the size of air cells in the egg or the pounds loss in weight of eggs during incubation this loss should bo be from 10 to 12 per cent of the original weight of eggs by the end of the eighteenth day cooling of eggs Is not necessary it the ventilation of the egg chamber Is satisfactory |