Swim Team Callouts
Proliferation, Meiosis, Differentiation (Spermiogenesis)
What hormone is important in regulating cyclicity in seasonal breeders?
Melatonin
What are the four stages of estrus?
Proestrus, estrus, metestrus, diestrus
Which oviduct (usually) regresses in birds, and what does it turn into?
What are the two compartments of the Seminiferous Tubules?
Basal, Adluminal
Which livestock species has a heat period of 50 hours?
What hormone maintains negative feedback on the hypothalamus during the Estrous cycle?
Progesterone
What estrus types take place within the follicular phase?
Proetrus and Estrus
Where do avian eggs ovulate from?
Stigma
The sperm head is specifically termed what?
Acrosome
Which livestock species have a reproductive cycle of 21 days? Provide at least 1.
Cow, Sow, Horse
What hormone(s) cause local immunosuppression in the testes? Name at least one.
TGBß, Activin, and IL10
What are two potential factors that contribute to anestrus?
Photoperiod, Nursing, Nutritional, Pathological, Gestational
Which avian follicle type exhibits a hierarchy and which follicle will ovulate?
Large Yellow Follicles, F1 follicle
What are the four phases of maturation?
Golgi, Cap, Acrosomal, Maturation
How long is the heat period of a cow?
15 hours
The sensitivity of what hormone is increased due to rising levels of estradiol during follicular selection?
FSH
What gland regulates breeding activity in the seasonal breeder?
Pineal Gland
Which yolk type is laid down at night?
What happens to the sperm nucleus during maturation?
It fully elongates and compresses
What livestock species will for sure exhibit lactation anestrus?
The size of the corpus luteum is positively correlated to the production of what hormone?
Progesterone
What are two factors that stimulate lactational anestrus?
Mammary simulation, visual stimulation, olfactory stimulation, and auditory stimulation
What two hormones peak around 6 hours prior to ovulation in birds?
Testosterone and DHT