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Egg Storage-room Environment Hatching eggs should be stored in a cool and, if possible, constant-temperature room. The best temperature for egg storage is between 50 and 60f (10 and 16c). Ideal storage has a regulated constant temperature of 55f (13c). Room temperatures above 80f (27c) cause cell division to continue at an abnormal rate and will lower the hatch, by effecting the egg quality and by causing abnormalities, particularly in the brain and eye regions. Storage at freezing temperatures (32f [0c]) will affect the egg contents and crack the shells, destroying the egg. Even if the temperature is just above freezing, hatchability will decrease drastically after about three days. in gereral, hatchability is related to temperature and length of storage. Thus, at a constant temperature of 55f (13c), hatchability will hold up for the longest period. At higher storage temperatures (between 60 and 78f[16 and 26c]), hatchability will decline. If the storage temperature is higher than normal or fluctuating, eggs must be set more frequently. The susceptibility of eggs to temperature extremes indincates that eggs should be collected several times a day, especially in hot weather (over 80f [27c]) or in very cold weather (near or below freezing). Holding hatching eggs for longer periods of time can be desirable, as older eggs require a longer incubation period. Occasionally, breeders want to save eggs for longer periods, particularly at the beginning or the end of the season. However, if eggs held for two or more weeks are set along with fresher eggs, the older eggs shoud be allowed extra incubation time: they should be preset. Eggs held for three weeks require about eighteen hours of extra time. Reynnells et al. (1977) found that coturnix and bobwhite eggs stored for longer that fourteen and twenty-five days, respectively, at temperatures of 78 to 82f (26 to 28c) failed to hatch, whereas comparable groups of eggs from the two species held under temperatures of 59 to 61f (15 to 16c) hatched at rates ranging from 70 to 80 percent.( from the book: Commercial and Ornamental Game Bird Breeders Handbook, by Allen Woodard, Pran Vohra & Vern Denton)