Question

Match List-I with List-II regarding clinical signs and poultry diseases

List-I (Clinical sign)	List-II (Disease)
(A) Coughing of blood	(I) Coccidiosis
(B) Bloody droppings	(II) Infectious laryngotracheitis
(C) Swelling of eyelids, comb and face	(III) Infectious coryza
(D) Proventricular hemorrhages.	(IV) Newcastle disease.

Choose the correct answer from the options given below

• (A) - (II), (B) - (I), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)

Hint:

Classic diagnostic indicators in poultry:
- Coughing blood = Infectious Laryngotracheitis (ILT).
- Bloody droppings = Coccidiosis (E. tenella).
- Swollen face/comb = Infectious Coryza.
- Proventricular hemorrhages = Newcastle Disease.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Diagnosing poultry diseases involves identifying specific clinical signs and post-mortem lesions associated with viral, bacterial, and protozoal infections.

Step 2: Detailed Explanation:
Let us match each clinical sign with its corresponding disease:
- (A) Coughing of blood: This is a classic clinical sign of Infectious Laryngotracheitis (ILT), a highly contagious herpesvirus infection.
The virus causes severe, acute inflammation of the larynx and trachea with mucosal hemorrhage.
Affected birds cough up bloody mucus, which can stain the walls of the poultry house.
This matches with (II).
- (B) Bloody droppings: This is the characteristic clinical sign of cecal coccidiosis, caused by the protozoan parasite Eimeria tenella.
The parasite multiplies in the epithelial cells of the ceca, causing severe tissue damage, hemorrhages, and bloody droppings.
This matches with (I).
- (C) Swelling of eyelids, comb and face: This is a primary clinical sign of Infectious Coryza, a respiratory disease caused by the bacterium Avibacterium paragallinarum.
It is characterized by severe facial edema, swollen wattles and comb, and purulent ocular discharge.
This matches with (III).
- (D) Proventricular hemorrhages: Pin-point, petechial hemorrhages at the tips of the glands in the proventriculus are a diagnostic post-mortem lesion of Newcastle Disease (Ranikhet disease), a highly contagious viral infection.
This matches with (IV).
Therefore, the correct matching sequence is: (A) - (II), (B) - (I), (C) - (III), (D) - (IV).

Step 3: Final Answer:
The correct matching sequence corresponds to option (A).