Topics:
Animal Refresher, Animal Reproduction
Test to Detect Estrogen in Urine of Pregnant Mare
View Complete Answer & Explanation
Question (English)
In case of pregnancy diagnosis in the mare, which test is used to detect estrogen in urine?
- Casoni test
- Cuboni test ✓ Correct
- Aschheim-Zondek (A-Z) test
- All of the above
Explanation:
Correct Answer: Cuboni test
The Cuboni test is used to detect estrogen (specifically estrogens/conjugated estrogens) in the urine of a pregnant mare. It is a colorimetric test — the urine is treated with sulfuric acid and resorcinol; a positive result shows a green fluorescence under UV light.
Pregnancy Diagnosis Tests in Mare
- Cuboni test: Detects estrogen in urine → positive from ~150 days of pregnancy
- Aschheim-Zondek (A-Z) test: Detects PMSG in serum → positive from ~40 days to ~120 days of pregnancy
- Rectal palpation and ultrasonography: Most reliable and earliest physical methods
Casoni Test
The Casoni test is actually an intradermal skin test used for the diagnosis of Echinococcosis (hydatid disease) — it has nothing to do with pregnancy diagnosis.
📚 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.
