Intensive Rearing of Livestock

Page 29 of the CGP A2-Level Biology Revision Guide. 

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  • Intensive Rearing of Livestock
    • This involves controlling the conditions that livestock live in, so more energy is used growth and less is used on other activities.
      • The efficiency of energy conversion is increased so more biomass is produced and productivity is increased
    • Animals may be kept in warm, indoor pens where their movement is restricted.
      • Less energy is wasted keeping warm and moving around.
    • Animals may be given feed that's higher in energy than their natural food.
      • This is increase the energy input, so more energy is available for growth.
    • The benefits are that more food can be produced in a shorter space of time, often at a lower costs.
    • It raises ethical issues.
      • Some people think that the conditions cause the animals pain, distress and restricts their natural behaviour


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