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Table 1 Criteria to discriminate pig farming systems. Criteria to discriminate pig farming systems using farm scales as defined in the Standard for Good Agricultural Practices for Pig Farm in Thailand in 2009

From: Spatial analysis and characteristics of pig farming in Thailand

Categories Definitions Approximate number of pigs
Smallholder Raising boar and sow or finishing pig or piglet or combination of different ages that has the livestock weight less than six unitsa <50 headb
Large-scale farm
 Small Raising boar and sow or finishing pig or piglet or combination of different phases of age that has the livestock weight between 6 and 60 unitsa 50–500 head
 Medium Raising boar and sow or finishing pig or piglet or combination of different phases of age that has the livestock weight between 60 and 600 units. 500–5000 head
 Large Raising boar and sow or finishing pig or piglet or combination of different phases of age that has the livestock weight more than 600 units >5000 head
  1. aUnit of livestock weight means net weight of boar and sow or finishing pig or piglet or combination of different ages that have total weight equal to 500 kg by assigning 170 kg for the average weight of boar or sow, 60 kg for finishing pig and 12 kg for piglet
  2. b50 head calculated from (6 units × 500 kg)/60 kg