Chickens

Chickens can't taste sweetness

(brahma)

Chickens are able to comprehend that when an object is taken away from them or hidden, it still exists. children are unable to understand this

(hamburg)

Came to the USA

1500's

The American Poultry Association was organized for adopting standards of excellence and establishing ways of classifying the various breeds

1873

Domestication

2000 B.C.

Hen

Adult female chicken over one year of age

Rooster

An adult male chicken (silky)

Chick

Baby chicken

Leads the most head slaughtered annually

Brazil at 3380 million

Plymouth Rock

Color: Barred, White, Buff, Silver Penciled, Partridge, Columbian, Blue, Black. Used for meat and eggs. Single comb, most are dark barred.

Ameraucana

Color: Black, Blue, Blue Wheaten, Brown Red, Buff, Silver, Wheaten, White. Used for Egg-laying. Some have blue legs, they have muffs and a beard.

Naked neck (Turken)

Color: Black, White, Buff, Red. Used for meat and eggs. naked neck, look kind of like turkey,

Cornish

Color: Dark, White, White laced red. Used for meat. Close-fitting feathers, small pea combs, large legs, very stocky birds

Rhode island

Color: Red, White. Used for Meat and Eggs. medium in size, single comb

Sussex

Color: Red, speckled, light. Used for meat and eggs. Fat bodied bird, single comb

Easter Egger

Color: Varies. Used for egg laying. No feathered legs, puffy ears, medium in size, very good egg layer, eggs in colors of green, olive, blue, pink, multi

Leg horn (white)

Color: White, Pearl-white. Used for Egg-laying. single comb, smaller bird.

Pullet

Female chicken under one year of age

Chinese and Indians

First people to domesticate chickens

The Respiratory system governs the gas exchange

Gas exchange in the tissue and lungs occurs mostly through diffusion.

Leads the Nation in production in Broiler Chickens

Georgia

Clutch

Group of eggs, usually about 12

Most of the oxygen that goes into the blood combines with hemoglobin and that forms oxy-hemoglobin

Hemoglobin- an iron containing respiratory protein that is found in the red blood cells.

Broody Hen

Hen that wants to sit on eggs to hatch them

Value of poultry industry

In 2014, $48.3 billion

Leads the nation in Production of Eggs

Iowa

Layers

Mature female chicken kept for egg production

Uses of chickens

Meat, paper and plastics (Feathers), Eggs

In tissue some of the hemoglobin combines with carbon dioxide and forms Carbaminohemoglobin.

Most of the carbon dioxide is transported in form of Bicarbonate ions.

The percent of oxygen- binning sites depends on the partial pressure of oxygen in the immediate environment

Partial pressure- is the amount of pressure exerted by a particular gas among all gasses present.

Mrs. Wilmer Steele

Pioneer of the commercial broiler chicken

Primary function of the Respiratory System is to supply oxygen to the blood.

Secondary is to remove carbon dioxide from the tissues and blood. + many other functions.

Chick tooth

Sharp end of chick's beak used to poke a hole in the egg's shell during hatching

Down

Soft, fine feathers on chicks

Chickens begin communicating before they are hatched

The mother hen talks to the egg

Brooding period

The stage of life between hatch and adulthood.

Israeli's

first people to raise chickens for food

Diffusion

is the movement of molecules from a region of higher concentration to a region of lower concentration in effort to equalize concentration.

Hydrogen ions are absorbed by the globin of hemoglobin.

then HCO3 diffuses out of the red blood cell to the plasma.