Animal Science Reproductive System

In the cell, the mitochondrion converts energy from glucose into what?

ATP

If the heritability estimate for number of pigs farrowed is 10%, lean cuts is 35%, birth weight is 20% and backfat thickness is 45%, which trait can be improved the fastest through selective breeding.

Backfat thickness

Are heritability estimates higher for beef or swine in general?

Beef

Is the cloaca located in male poultry, female poultry or both?

Both

Seminal Vesicles, prostate gland and Cowper's gland are labeled as what type of glands?

Bulbourethral Gland

If boar "A" is from a litter of 16 and has loin eye of 4.25 inches, boar "B" is from a litter of 14 and has a loin eye of 5.00 inches and boar "C" is from a litter of 10 and has a 6.10 inch loin eye, which boar would improves the fastest?

C

Which heritability estimates are higher: those for carcass or reproduction

Carcass

Removing of testicles of male animals to prevent breeding

Castration

The neck of the uterus that separates uterus from vagina.

Cervix

The first milk produced after a mammal gives birth that contains antibodies needed for immunity

Colostrum

What are genes?

Control your phenotype inherited from parents

Define Mitosis

Division of cells

The time a female animal is receptive to be bred, also called heat

Estrus

The length of a female's cycle from one estrus to the next.

Estrus Cycle

The union of the sperm and egg cells

Fertilzation

What is the normal presentation for a beef calf for birth?

Front feet first, head in between feet, shoulders, middle or body, hips then back legs and feet

The time an animal is pregnant

Gestation

In female livestock, the funnel-shaped structure located just below the ovary is called what?

Infundibulum

Where are the testes in male poultry?

Inside

What parts make up the oviduct in poultry?

Isthmus, Magnum, Vagina and Uterus

The period a mother is milking

Lactation

What part of the animal cell gives the ability to grow, digest food and divide?

Nucleus

How many functioning ovaries do female poultry have?

One

Where in the poultry reproductive system is the egg formed?

Ovary

Part of the repro system also called the fallopian tubes.

Oviducts

The release of the egg cell from the ovary

Ovulation

What reproductive part of male poultry puts the sperm inside the hen?

Papillea

The act of giving birth

Parturition

Age at which animals reach sexual maturity

Puberty

In male livestock, what does the sheath cover?

The penis

Part of the reproductive tract that allows the fetus to pass through at birth and also serves as a passageway for expelling urine?

The vulva

What is the major difference between the reproductive systems of livestock and poultry?

They have a cloaca and the male poultry reproductive organs are inside instead of out.

Part of the reproductive system also known as the womb.

Uterus

Part of the reproductive system that connects the vulva to the cervix.

Vagina

In poultry eggs, what is the ovum called?

Yolk

What is the incubation period for chicken eggs?

21 days

How many chromosomes does each egg or sperm have after cell division inn meiosis

1/2