Bird and Reptile Reproduction

Question 1

Anatomy

Answer 1

Left ovary and oviduct only in avians
Bilateral in reptiles
Continuous or cyclical breding

Question 2

How do follicles develop?

Answer 2

Simultaneously

Question 3

What stimulates folliculogenesis?

Answer 3

Increasing day length, mate presence, increased caloric intake, nesting, increasing temperature

Question 4

Calcium + Lipids

Answer 4

Extremely high plasma total calcium concentrations, spike at ovulation
Hyperlipidemia normal around folliculogenesis

Question 5

What are the 5 distinguishable regions of the oviduct?

Answer 5

Infundibulum
Magnum
Isthmus
Shell gland (uterus)
Vagina

Question 6

Where does fertilization occur?

Answer 6

Infundibulum

Question 7

Where does the shell calcify?

Answer 7

Shell gland/uterus
most important site for uterus pathology

Question 8

What is important about ovipositioning between indeterminant and determinant layers?

Answer 8

Don’t remove egg from indeterminant layers - will continue to lay eggs until it dies (parrots)
Can remove eggs from budgies and reptiles (determinant layers)

Question 9

Determinant Layer

Answer 9

Fail to lay additional eggs in the event of egg loss
Chelonians, reptiles, budgies

Question 10

Indeterminant Layer

Answer 10

Loss of egg stimulates second cycle
Psittacines, anseriformes, galliformes

Question 11

What are signs of reproductive disease?

Answer 11