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Unformatted text preview: behavioral, reproductive, and physiological characteristics Constraint factor preventing full expression of a physiological or behavioral trait E.g. broiler size Every bird has an energy budget. This energy budget must be controlled physiologically, which is largely accomplished by the endocrine system. Endocrine secretion of a gland that is transmitted by blood (in contrast to exocrine, secreted to the outside sweat glands) WHAT ARE THE MAJOR ENDOCRINE GLANDS? We can see how endocrine processes drive various behaviors: Reproductive hormones control reproductive behaviors Stress hormones control fight or flight responses Thyroid hormones control metabolism and food intake Many hormones adjust immune function...
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This note was uploaded on 04/08/2011 for the course POUL 3123 taught by Professor Navara during the Spring '09 term at University of Georgia Athens.
- Spring '09