Animal Science II

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Animal Science II

• Biotechnology in Animal Science

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Objective

• Describe the use of biotechnology to improve
  animal health, productivity and reproduction

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What is Biotechnology?

• The altering of the genetic makeup of plants and
  animals

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Improving Animal Health

• Improved Diagnostic testing
• Monoclonal antibodies
• Pregnancy testing
• Brucellosis
• Treatment for disease
• Caused by viruses and bacteria
• Genetically engineered vaccines
• Not live disease causing agents

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Improving Productivity

• Transgenic
• Animals that have been genetically engineered
• DNA has been shared between organisms
• Gene transfer
• Can be used to produce medicines for humans

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Improving Productivity

• Somatotrophins
• Hormones produced by the pituitary gland
• Circulates in the blood
• Directs growth and fat deposits
• Regulates milk production in females

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Somatotrophins

• Examples
• bST
• Bovine somatotrophin
• Increases weight
• Leaner meat

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Somatotrophins

• pST
• Porcine somatotrophin
• Increases feed efficiency
• Reduces fat

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Improving Reproduction

• Embryo Transfer
• Performing a superovulation of a female
• Fertilizing the eggs
• Removing the fertilized embryos
• Placing live embryos in other animals (of the
  same species)

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Improving Reproduction

• Cloning
• Makes animals have identical genetics
• Embryo splitting
• Nuclear transfer
• Most rapidly increases uniformity in a particular
  species of animal

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Assignment

• Complete the questions on page 209 in the Modern
  Livestock and Poultry Production textbook after
  reading the chapter on Biotechnology in
  Livestock Production