Topics:
Animal Nutrition, Animal Refresher
Energy Calculation Standard in India
Energy requirement for cattle in India is calculated as:
- DCP
- TDN — Correct Answer
- DM
- CP
Explanation:
Correct Answer: TDN
In India, the energy requirement for cattle is expressed and calculated using TDN (Total Digestible Nutrients), as specified in Morrison's feeding standard — the most commonly used feeding standard for Indian livestock.
TDN — Key Facts
- TDN% = DCP% + DCF% + DNFE% + (DEE% × 2.25)
- Fat is multiplied by 2.25 because it has 2.25× more energy than carbohydrates
- 1 kg TDN = 4.4 Mcal Digestible Energy
- 1 kg TDN = 3.6 Mcal Metabolic Energy (DE × 0.82 = ME)
- 1 kg TDN = 0.86 Starch Equivalent
- 0.32 kg TDN needed per litre of milk production
Morrison's Feeding Standard (Used in India)
| Feature | Details |
|---|---|
| Based on | DCP, TDN & DM |
| Country | Commonly used in Indian livestock |
| Published | 1915; "Feeds & Feeding" book |
| Indian adaptation | Sen & Ray (1964) standard; ICAR standard by Dr. S.K. Ranjhan |
Why Other Options Are Wrong
- DCP → measures protein digestibility; not the energy expression unit
- DM → dry matter basis; used for feed quantity, not energy calculation
- CP → crude protein; a protein measure, not energy measure
📚 About this Topic — Animal Nutrition
This multiple choice question is from Animal Nutrition, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Nutrition to strengthen your preparation.
