SS1 Second Term Animal Husbandry Lesson Note – Reproductive Hormones and Their Functions

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 WEEK 8 & 9

TOPIC: REPRODUCTIVE HORMONES AND THEIR FUNCTIONS

Sub-Topic 1

ENDOCRINE SYSTEM

This is a system that help in the secretion of hormones in the body of the animal. They are also known as the ductless glands. Hormones are organic chemical secreted at one point and have effect at other point called the target organs.

We, shall limit ourselves to reproductive hormones

MALE REPRODUCTIVE HORMONES

TESTOSTERONE OR ANDROGEN

Functions

1. It brings about puberty in male animal
2. Essential for the secretion of spermatozoa
3. Help in the development of secondary sexual characteristics in male animals
4. Increase libido or sexual urge in male animals
5. Maintenance of the right conditions for sperm formation.

FEMALE REPRODUCTIVE HORMONES

OESTROGEN OR ESTROGEN: This hormone is secreted by graffian follicle.

Function

1. Bring about puberty in female animals
2. Helps in secretion of ovules (ova)
3. Essential for the development of the secondary sexual characteristics in female animals.
4. Brings about ovulation and oestrous or heat period
5. Helps in development of mammary gland
6. Help in mucus secretions in female tract.

Sub-topic 2

PROGESTERONE

Function

Essential for the implantation of the embryo in

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