Download Animal Reproduction

Animal Reproduction
Biology Agriculture
Reproductive System

Ovaries


Female reproductive gland in which eggs
are formed and hormones are produced.
Testes

Male reproductive gland that produces
sperm and testosterone.
Reproductive System

Female Reproductive Cell

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EGG (OVULE)
Male Reproductive Cell

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SPERM
Semen - the fluid that carries sperm
Reproductive System
• Production of sperm is called
SPERMATOGENESIS
• Production of eggs is called OOGENESIS
Reproductive System

Zygote

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Embryo

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Organism in early stages of development.
Pregnancy


Cell formed by the union of egg and sperm
at fertilization.
carrying a fetus
Fertilization

the union of the egg and sperm nuclei
Reproductive System

Conception

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Ovulation


occurrence of fertilization
release of an ovule from the female.
Gestation

the time from fertilization or conception of
a female until she gives birth
Reproductive System

Vulva -opening of reproductive tract
Reproductive System

Vagina - channel for birth and
copulation
Reproductive System

Cervix - divides vagina and uterus
Reproductive System

Uterus - provides nourishment for fetus
Reproductive System

Horns of Uterus - where fetus grows
Reproductive System
• Fallopian Tube - where fertilization
occurs
Reproductive System

Ovaries - produces eggs and hormones
Reproductive System

Testes - produce sperm and testosterone
Reproductive System

Epididymis - collects and stores sperm
Reproductive System

Vas deferens - transports sperm
Reproductive System

Penis - places sperm in female
Reproductive System

Scrotum - protects testes, maintains
temp
Reproductive System

Sheath - opening of reproductive tract
Animal Reproduction

Ovaries – produces eggs
and hormones
Animal Reproduction

The ovaries are
stimulated by a hormone
called the follicle
stimulating hormones
(FSH) and produce a
FOLLICLE where the egg
(ovum) grows and
matures
Animal Reproduction

When the egg matures
the follicle ruptures and
releases the egg OVULATION
Animal Reproduction
Mating Process

Around the time of ovulation estrogen
causes estrus or heat


The time that the female will allow the
male to mate with her
Males seek out females that are in
estrus
Mating Process

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During mating millions of sperm are
deposited in the female vagina.
Sperm moves by using their tails in a
whiplike action – motile
Mating Process


Sperm travels from the vagina through
the cervix and uterus and into the
fallopian tubes
Sperm and egg unit in the fallopian
tube
Reproductive Technologies

Reproductive Technologies

Any method of reproduction that is
different from natural methods
Reproductive Technologies

Embryo Transfer:

The transfer of fertilized egg(s) from a donor
female to one or more recipient females
Reproductive Technologies

Embryo Transfer
Reproductive Technologies

Embryo Transfer
Reproductive Technologies

Super Ovulation:

Giving animals a hormone that causes
them to produce more then one egg.
Reproductive Technologies

Artificial Insemination

Placing sperm into the female
reproductive tract by means other than
natural mating.
Reproductive Problems

Sterility:


Inability of an animal to reproduce
Freemartin:


In twins, when a female is exposed to male
testosterone before birth.
Causes problems with the development of
female reproductive organs
Reproductive Practices

Purebreeding


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Breeding two pure breed animals together
Usually papered to prove genetics
Crossbreeding

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One breed is breed to another
Ex. Angus x Herford = Black Baldy
Reproductive Practices

Grading-up

Taking grade cows and breeding to
purebreds