Puberty - Exam 2

What causes the surge center to develop in females?

Estradiol from the ovaries binds to Alpha-Feto Protein, which does not pass through the blood brain barrier

What causes lack of surge center in males?

Testes does not bind to Alpha-Feto Protein, therefore it passes through the blood brain barrier and gets converted to estradiol by aromatase.

Before a surge of LH, what hormone comes before?

GnRh

How do you get an accurate measurement of a hormone?

Measure between the source and the target of the hormone.

What factors influence age of attainment of puberty?

Genetics

Acute Nutrition

Long Term Nutrition

Social Environment

Photoperiod

Describe how genetics affect attainment of puberty?

Breeds, Frame size, and scrotal circumference can affect attainment

Describe how acute nutrition affect attainment of puberty?

Nutrition can affect hormone levels and shut down hypothalamus

Describe how long term nutrition affect attainment of puberty?

Feeding high quality feed and supplements will lead to the female attaining quicker and will give a recovery period after calving

Describe how social environment affect attainment of puberty?

Pheromones from males will make females attain quicker

Describe how photoperiod affect attainment of puberty?

Seasonal breeders will go into anestrus when daylight is not favorable for cycling