Topics:
Animal Nutrition, Animal Refresher
Liquid Phase Markers for Digestibility Estimation
Which of the following is/are examples of liquid phase markers/indicators used for digestibility estimation?
- Polyethylene glycol (PEG) only
- Cobalt-EDTA only
- Chromium-EDTA only
- All — PEG, Cobalt-EDTA, and Chromium-EDTA — Correct Answer
Explanation:
Correct Answer: All — PEG, Cobalt-EDTA, and Chromium-EDTA
Liquid phase markers track aqueous phase passage through the digestive tract:
- PEG (Polyethylene glycol): Large water-soluble polymer; stays in liquid phase; detected colorimetrically.
- Cobalt-EDTA: Metal chelate marker; Co detected by atomic absorption spectrophotometry (AAS).
- Chromium-EDTA: Another metal chelate liquid marker; Cr detected by AAS.
| Phase | Markers |
|---|---|
| Solid phase | Chromic oxide (Cr₂O₃), Ytterbium (Yb), Dysprosium (Dy) |
| Liquid phase | PEG, Cobalt-EDTA, Chromium-EDTA |
📚 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.
