An Sci 1101 Chapters 2 - 4

Why do we need domestic animals? FOOD By-Products

The Food Uses of Agricultural Animals Annual per capita meat supply ranges from over 270 lbs per year in affluent countries to little or none in poor and/or vegetarian societies The Pig is the most important meat producer producing 38% of the world’s meat. 85% of milk is from cattle Poultry offer great potential

Non – Food uses Body coverings provide clothing Power Sources (Draft and Fuel) Compost Weed Control (Grazing) Storage of Capital and Food Cultural Uses Exhibitions and Spectator Sports Companionship and Service Social Structure

Non – Food Uses Continued Non- Edible By-Products Human Health Research - Xenotransplantaion – The Transplanting of animal organs into humans Conservation

Chapter 3 Factors affecting World Agricultural structures Adaptation – sum of the changes an animal makes in response to environmental stimuli Symbiotic relationship – when organisms live together in a mutually beneficial relationship Stress – A state of physical, emotional, or chemical strain or tension on the body (climate, Nutritional, Internal, Geographical, Social)

Why Graze? Area too dry Area is too rough to cultivate Area is located at high elevations – too short growing season Area is so far removed from good markets – costs too much to ship

Some other terms Finishing – preparing for market Market Gardening (Mediterranean Agriculture) – Specialized production of fruits, vegetables, or vine crops for sale Transhumance – Season moving of animals from a permanent base to more abundant feed and water and then returning to the permanent base.