McDaniel, Christopher

Committee Member

Peebles, E. David

Committee Member

To, Filip Suminto

Committee Member

Zhai, Wei

Date of Degree


Original embargo terms

MSU Only Indefinitely

Document Type

Graduate Thesis - Open Access

Degree Name

Master of Science


College of Agriculture and Life Sciences


Department of Poultry Science


Avian embryonic development, hatchability, and post-hatch performance are greatly affected by temperature. Therefore, a pragmatic, minimally invasive, and industrially applicable method for the precise and accurate measurement of embryonic temperature is needed. The objective of this research was to develop such a method. Preliminary research concerning air cell depth profiles and the relationships of eggshell thickness to thermal gradients across the shells of broiler hatching eggs were determined. This provided information for appropriately positioning and timing wired thermistor probe insertion into egg air cells for the practical and accurate estimation of embryo temperature. The relationship between air cell temperature readings using transponders and wired thermistor probe network assemblies were likewise determined. Embryo temperature estimation using probes was shown to be a satisfactory, but their depth should be adjusted daily by 0.042 cm after Day 12 of incubation in order to mirror transponder temperature readings.



transponder||thermistor||incubation||eggshell temperature||air cell

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