animal agriculture as science
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Animal Agriculture as Science. The Science of Animal Agriculture. Land Grant and other events. 1862- President Lincoln established the United States Department of Agriculture. 1872- Hatch Act establishment of experiment stations. - PowerPoint PPT PresentationTRANSCRIPT
August 2008
Animal Agriculture as Science
The Science of Animal Agriculture
August 2008
Land Grant and other events• 1862- President Lincoln established the United
States Department of Agriculture.
• 1872- Hatch Act establishment of experiment stations.
• 1962- Morrill Act provided public land and funds for establishing universities to teach practical methods of manufacturing and producing food and fiber.
August 2008
Land Grant Con’t
• 1914 Smith-Lever Act set up cooperative extension service.
• 1917 Smith-Hughes Act established Vocational Agriculture in public high schools.
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The Scientific Method requires several steps
• Recognize a problem
• Develop hypothesis
• design an experiment
• collect data
• analyze data
• draw conclusions
• make recommendations
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Benefits of Research in Animal Science
• Food increase amount
• Relatively low prices for food
August 2008
Advancements made in Agriculture since 1925• Beef cattle live weight marketed per
breeding female increased from 220 pounds to 482 pounds.
• Sheep live weight marketed per breeding female increased from 60 to 130 pounds.
• Milk marketed per dairy cow increased from 4189 to 10500 pounds. An increased of 2 1/2 times the amount of milk as in 1925.
August 2008
Some More Advances Made
• Swine live weight marketed per breeding female increased from 160 to 285 pounds. Time to produce a 220 pound hog has been reduced from 170-157 days.
• The weight of marketed turkeys increased from 13.0 to 18.4 pounds.
• Broilers can reach market weight at 7 ½ weeks, down from 15 weeks. Amount of food needed to reach market weight was cut from 4 pounds to 2 pounds.
August 2008
Some more advances made
• Production per laying hen from increased from 112 to 232 eggs.
August 2008
Revolutionized Animal Agriculture
• Animal Immunization
• Refrigeration
• Artificial Insemination
• Embro Transfer
• Use of Computers
August 2008
Ways Livestock Research has Helped Humans
• Cortisone- relieves the suffering of arthritis made from the gallbladder of cattle
• Insulin- use for diabetics derived from hogs
• Heart Valves- pig heart valves are superior to mechanical valves because they do not accumulate as much residue.