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Introduction to Animal Science
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Competency: Investigate agriculture animals in order to build a foundational knowledge for advanced animal science studies
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ANIMAL DOMESTICATION Adapting animal behavior to fit the needs of people.
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REASONS FOR DOMESTICATION To ensure a steadier supply of food and clothing Companionship Assist in labor
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RESULTS OF DOMESTICATION Less dependence on hunting and wild plants for food A surer source of food and clothing A more settled way of life Selective breeding
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WHAT IS SELECTIVE BREEDING? Selecting animals with certain desirable characteristics to use for breeding purposes
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ORIGIN OF CATTLE Bos taurus- European cattle Bos indicus- Humped cattle from tropical countries. –India First brought to the U.S. by Columbus
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ORIGIN OF CATTLE Major growth of large herds in great plains states because of grazing. Midwest and north central states became the main area for finishing cattle because of grain.
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ORIGIN OF SWINE Sus scrofa and Sus vittatus. Chinese were first to tame pigs. Brought to new world by Columbus DeSoto took hogs westward Midwestern cornbelt states became largest hog producing area
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ORIGIN OF SHEEP One of the first animals tamed by humans Brought to new world by Columbus Used by colonists mainly for wool Northeast and Western states are main sheep producing areas
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ORIGIN OF GOATS Pasang and Grecian Ibex- Wild goats found in Asia Minor Goats brought to new world for milk and hair
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ORIGIN OF HORSES Evolved from Eohippus First tamed in Asia or Persia Brought to new world by Columbus Horses were left behind by explorers Brought to new world for work animals
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ORIGIN OF POULTRY Gallus gallus- Wild jungle fowl, ancestor of tame chickens Turkeys were probably tamed by people originally living in America
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Objective Animal Science Terms 1.01 Define terms used to identify animals by sex, age, & physical traits in the beef, swine, and poultry industry
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Terms Description:CattleSwinePoultry Male not castrated
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Objective Breeds 1.02 Identify the major breeds of beef, swine, and poultry
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Beef Breeds Angus –Black –Polled –Originated in Scotland –It is the most “registered” purebred –High in carcass quality
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Angus
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Beef Breeds Hereford –Red and White face –Horns –Originated in England –Docile Gentle temperament –Good foragers Efficient converters of forage crops
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Hereford
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Beef Breeds Charolais –White to light straw colored –Horned –Large framed –Originated in France
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Charolais
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Beef Breeds Brahman –Light Gray to Black or Red –Originated in India –Pronounced hump –Loose Dewlap –Insect tolerant –Disease tolerant
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Brahman
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Shorthorn
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Polled Hereford Developed from the horned Hereford breed Originated in 1901 Warren Gammon Des Moines, Iowa
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Polled Hereford
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Limousin Native to the south central part of France
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Beefmaster Developed from: –Brahman –Hereford –Shorthorn Developed by Ed Lasater in 1908
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Beefmaster (Bull)
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Texas Longhorn
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Chianina (pronounced kee-a- nee-na)
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Dairy Breeds Holstein –90% of the dairy cattle in the US –Black and white –Leading producer of milk –Produce about 18,000 lbs. Of milk per cow per year
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Holstein
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Other Dairy Breeds Jersey Cream to light fawn to almost black Number one in milk fat Guernsey Fawn and white Ayrshire Cherry red and white Brown Swiss Solid brown
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Jersey
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Guernsey
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Ayrshire
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Brown Swiss
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Identifying Breeds of Swine
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American Landrace White Long Body Big loped forward ears Large litters Good mothering ability Originated in Denmark
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American Landrace
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Duroc Red Drooped ears Good growth rate Excellent feed conversion
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Duroc
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Hampshire Black with a white belt Erect ears Good muscle Carcass leanness
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Hampshire
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Yorkshire White Erect ears Large litters Good feed efficiency Excellent growth and mothering ability Long carcass
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Yorkshire
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Poland China Drooped ears Black and white Sound in its feet and legs
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Poland China
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Chester White Chester County, Pennsylvania Intermingled English breeds
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Chester White
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Tamworth English breed Ireland Bacon-type
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Tamworth
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Berkshire Black and white Erect ears Fast and efficient growth Reproductive efficiency Cleanness Meatiness
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Berkshire
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Spotted Swine Popular with farmers and commercial swine producers for their ability to transmit their fast- gaining, feed efficient, meat qualities to their offspring
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Spotted Swine
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Identifying Breeds of Poultry
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Breeds, Varieties, Types & Classes Breed- group of related fowl that breed true for a specific trait Type- purpose for which it is breed (meat or egg type) Classes- geographic origin (Mediterranean, American, English and Asiatic)
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Egg Producers Layers- chickens that produce eggs White egg producers- small in size –White Leghorns- white plumage Brown Egg producers- larger birds that are not as economical as Leghorns –Rhode Island Reds- dark red plumage –New Hampshires- red plumage –Plymouth Rocks- white plumage
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Meat Producers Chickens used for meat production are called Broilers Birds used for meat production are usually commercial crosses –Example: White Plymouth Rock females mated to Cornish (English class) males
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Turkeys Broad Breasted White White plumage Shanks, feet, and beak is white to pink White pinfeathers –Increases the value of the carcass Can survive better in hotter climates Good body confirmation but smaller than other breeds
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Turkeys Broad Breasted Bronze Black plumage Dark colored pinfeathers Largest of the turkey varieties Poor fertility and reproductive problems –Males are not good breeders
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Turkeys Beltsville Small Whites Developed by the USDA Similar to the Broad Breasted Whites Averages about 10 lbs. less in mature body weight
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Commer cial Livestock Used in the livestock and poultry industry Crosses of more than one breed or strain of breeds Adds in genetic diversity –Livestock have more desired traits –Undesirable traits can be lessened Used by most producers
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