Historical+Context

Historical+Context - 9/28/2010 1 Historical Context Why do...

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Unformatted text preview: 9/28/2010 1 Historical Context Why do we always talk about agricultural animals? Changes in animal agriculture prior to WW II post-WWII intensification of agriculture introduced - really took off in the 1950s & 1960s ht p://www.sfzoo.org/generated/exhibits/30/family_f arm.jpg Scientific advances early 20 th century: antibiotics & vitamins discovered by 1920s vitamins enabled animals to be raised indoors (dont need sunlight) antibiotics facilitated higher stocking densities (reduced disease/epidemics) Increased understanding of genetics 9/28/2010 2 Changes in animal agriculture increased scale ex. poultry industry 8 billion broilers per year hundreds of thousands or millions of birds/farm vertical integration vertical integration all phases together contract growers dramatic increase in farm size The egg industry The broiler industry Before After 9/28/2010 3 The pork industry sows in gestation crates sow & piglets in farrowing crates Concerns about farm animal welfare in Europe 1964: Ruth Harrison publishes Animal Machines criticism of INTENSIVE farm conditions...
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This note was uploaded on 03/26/2011 for the course ANS 18 taught by Professor Mchenry during the Spring '11 term at UC Davis.

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Historical+Context - 9/28/2010 1 Historical Context Why do...

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