When examining the lung fields of a normal CXR, the outline (silhouette) of the heart borders; the ascending and descending aorta; the aortic knuckle and the hemidiaphragms should be clearly visible. 1  All of these silhouettes, or structures, are in contact with a specific portion of the lung.
Perhaps the most important parameter is temperature â chicken eggs should be incubated at a temperature between 99 and 102 degrees Fahrenheit (99.5 is often considered to be ideal) and 50 to 65 percent relative humidity (60 percent is often considered the ideal).uring the final three days of incubation, the eggs should ideally be located in a slightly cooler (98.5 degrees) and more humid (65 percent relative humidity or greater) environment to facilitate successful hatching.
1 Before putting your eggs into an incubator, plug it in and make sure the temp is holding at 99.5 - 103 degrees. 2  Mark eggs with a pencil or marker with an x on one side and an o on the other. 3  This is for those of us who have to turn the eggs.eneral Hints. 1  Before putting your eggs into an incubator, plug it in and make sure the temp is holding at 99.5 - 103 degrees. 2  Mark eggs with a pencil or marker with an x on one side and an o on the other.