1. Interdependence of gas conductance, incubation length, and weight of the avian egg;Ar,1978
2. Theoretical and practical aspects of eggshell porosity;Tullett;Turkeys,1981
3. The conductance constant (k) is defined as k=G×IW where k = 5.13, G = eggshell conductance in milligrams of water vapor lost per day per millimeters of Hg of pressure gradient across the shell [inside pressure (saturation) – outside pressure (incubator humidity vapor pressure)], I = incubation period in days, and W = egg weight in grams. For example, if G = 17 and W = 90 g, which are average values for turkeys eggs, then 5.13=14×I90. Solving for I, 90 × 5.13 I=90×5.1317=27.2 days for the incubation period.
4. Eggshell conductance constants and the length of the incubation period affect survival of turkey embryos;Christensen;Poult. Sci.,1999
5. Effect of genetics and maternal dietary iodide supplementation on turkey embryonic growth;Christensen;Poult. Sci.,1999