Q60: In energy partitioning, the net energy content of a feed... - Animal Nutrition & Veterinary Physiology - ICAR AIEEA PG Animal Sciences 14 July 2023 (Shift 1) Paper | Agrigyan

Classical scheme of feed energy partitioning in animals:

• Gross Energy (GE) - Fecal Energy (FE) = Digestible Energy (DE).
• Digestible Energy (DE) - (Urinary Energy [UE] + Gaseous Energy of Fermentation [GEF]) = Metabolizable Energy (ME).
• Metabolizable Energy (ME) - Heat Increment (HI) = Net Energy (NE).
• Net Energy is the fraction completely available for maintenance ($ ext{NE}_m$) and production ($ ext{NE}_p$ like lactation, growth, wool, or work).
  
  Option analysis:
  Heat increment (heat of nutrient utilization + heat of fermentation) is subtracted from ME to obtain Net Energy, making Option 1 the correct answer (Key 1).