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

Liquid Phase Markers for Digestibility Estimation

Which of the following is/are examples of liquid phase markers/indicators used for digestibility estimation?

Options

Polyethylene glycol (PEG) only
Cobalt-EDTA only
Chromium-EDTA only
All — PEG, Cobalt-EDTA, and Chromium-EDTA ✓

Correct Answer: D

Explanation in English

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.

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