4VISSCHEDUK A H J. The air space and embryonic respiration 2. The times of pipping and hatching as influenced by an artificially changed permeability of the shell over the air space [J]. Br Poult Sci, 1968, (9):185--196.
5MEIR M, NIR A, AR A. Increasing hatchability of turky eggs by matching incubator humidity to shell conductance of individual eggs [J]. Poult Sci, 1984,63,1489--1496.
6JOSEPH M D. Watch egg weight during incubation [J]. Poultry Digest, 1988, (7),342--344.
7PEEBLES E D, BRAKE J. The role of the cuticle in water vapor conductance by the eggshell of broiler [J]. Breeders Poultry Science, 1986,65: 1034-- 1039.
8SWAN G S, BRAKE J. Effect of dry-bulb temperature, relative humidity and eggshell conductance during the first three days of incubation on egg weight loss and chick weight [J]. Poult Sci, 1990,69. 535--544.
9BRAKE J T. Hatchability of abnormal hatching eggs in broiler [J]. Pour Sci, 1987,66:24--25.