Wide mediastinum is caused by aortic rupture or mediastinal hematoma, but poor radiographic technique can lead to a mistaken diagnosis. The plain chest film and the aortogram are essential for the proper diagnosis of widened mediastinum in trauma.
1 Temperature: Chicken eggs should be incubated at a temperature between 99 and 102 degrees Fahrenheit (99.5 is often considered to be ideal). 2  Avoid temperatures outside the 97â103 Â°F (36â39 Â°C). 3  range. 4  If the temperature remains beyond either extreme for several days, hatchability may be severely reduced.
Too Hot to Handle. Extremes of hot or cold temperatures can cause your chickens to stop laying eggs. Heat affects egg production in chickens more than cold. Chickens lay well when the ambient temperature is between 11 and 26 degrees Celsius, or about 52 to 79 degrees Fahrenheit.Below that temperature, egg production diminishes.eat affects egg production in chickens more than cold. Chickens lay well when the ambient temperature is between 11 and 26 degrees Celsius, or about 52 to 79 degrees Fahrenheit.