Topics:
Animal Refresher, Dairy Science
Immunoglobulins Present in Bovine Milk
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Question (English)
Immunoglobulins present in bovine milk are:
- IgG1, IgG2, IgM and IgA ✓ Correct
- IgG1 and IgG2 only
- IgM only
- IgA only
Explanation:
Correct Answer: IgG1, IgG2, IgM and IgA
All four immunoglobulins — IgG1, IgG2, IgM, and IgA — are present in bovine milk (and colostrum). However, their concentration differs significantly.
Order of Immunoglobulins in Bovine Colostrum (Decreasing Concentration)
- IgG₁ > IgG₂ > IgM > IgA
Immune Factors in Bovine Colostrum
- Lactoferrin (iron-binding protein, important during mammary involution)
- Immunoglobulins (IgG1, IgG2, IgM, IgA)
- Trypsin inhibitor (protects immunoglobulins from GIT digestion in newborn calf)
Comparison
- Major Ig in bovine colostrum: IgG
- Major Ig in human colostrum: IgA
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Dairy Science. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
