Topics:
Animal Refresher, Animal Reproduction
Recommended Diluent for Bull Semen
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Question (English)
Recommended diluent in bull semen is:
- Glucose-gelatin
- Yolk-citrate modification (Citrate-yolk extender) ✓ Correct
- Yolk-glucose citrate
- Yolk-glucose bicarbonate
Explanation:
Correct Answer: Yolk-citrate modification (Citrate-yolk extender)
The yolk-citrate modification (also called citrate-yolk extender) is the recommended diluent for bull semen in AI programs.
Components and Functions
- Egg yolk: Provides lipoprotein and lecithin which protect sperm membranes from cold shock during cooling and freezing (cryoprotection).
- Sodium citrate: Provides osmotic buffer and energy source; chelates calcium ions.
- Glycerol (cryoprotectant): Added for frozen semen — penetrates sperm cells and prevents intracellular ice crystal formation.
Diluents by Species
- Bull: Yolk-citrate modification ✔
- Ram: Yolk-glucose citrate
- Stallion: Glucose-gelatin
- Boar: Yolk-glucose bicarbonate
📚 About this Topic — Animal Refresher
This multiple choice question is from Animal Refresher, Animal Reproduction. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Refresher to strengthen your preparation.
