Question:
Which of the following diseases is not vertically transmitted in poultry?
Which of the following diseases is not vertically transmitted in poultry?
Show Hint
Viruses that are highly lethal to embryos (like Newcastle Disease Virus or Highly Pathogenic Avian Influenza) rarely show true vertical transmission because the infected embryo dies inside the shell before hatching.
Updated On: Jul 8, 2026
- Salmonella Pullorum
- Newcastle disease
- Avian encephalomyelitis virus
- Mycoplasma gallisepticum
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Vertical transmission refers to the passage of a pathogen from parent to offspring through the egg (either transovarian or via eggshell contamination). Horizontal transmission occurs between birds via contact, aerosol, or ingestion.
Step 3: Detailed Explanation:
Let us analyze the transmission routes of the given pathogens:
1. Salmonella Pullorum (Pullorum disease): Classically transmitted vertically from infected breeder hens through the egg to chicks.
2. Mycoplasma gallisepticum (Chronic Respiratory Disease): Vertically transmitted via the egg, which is a major concern in breeder flocks.
3. Avian Encephalomyelitis virus: Commonly transmitted vertically through eggs laid by infected hens during the active viremic phase.
4. Newcastle Disease virus: Primarily transmitted horizontally via inhalation or ingestion of contaminated excretions. Although eggshell contamination can occur, true vertical transmission inside the egg is not a viable route because the virus is highly embryocidal, preventing infected embryos from hatching.
Step 4: Final Answer
The correct option is (B).
Vertical transmission refers to the passage of a pathogen from parent to offspring through the egg (either transovarian or via eggshell contamination). Horizontal transmission occurs between birds via contact, aerosol, or ingestion.
Step 3: Detailed Explanation:
Let us analyze the transmission routes of the given pathogens:
1. Salmonella Pullorum (Pullorum disease): Classically transmitted vertically from infected breeder hens through the egg to chicks.
2. Mycoplasma gallisepticum (Chronic Respiratory Disease): Vertically transmitted via the egg, which is a major concern in breeder flocks.
3. Avian Encephalomyelitis virus: Commonly transmitted vertically through eggs laid by infected hens during the active viremic phase.
4. Newcastle Disease virus: Primarily transmitted horizontally via inhalation or ingestion of contaminated excretions. Although eggshell contamination can occur, true vertical transmission inside the egg is not a viable route because the virus is highly embryocidal, preventing infected embryos from hatching.
Step 4: Final Answer
The correct option is (B).
Was this answer helpful?
0
0
Top ICAR AIEEA Animal Science Questions
- Which of the following antiviral drug is available for treatment of lumpy skin disease in cow?
- How do you arrange the correct sequence of the following procedural steps for early pregnancy diagnosis in cow?
(A) Do the insemination in adult dairy cows.
(B) Administer a small dose (2.5 mg or 0.5 ml) of Dinoprost (Lutalyse) intravenously through the ear vein.
(C) Observe critically the teat of the animal for alveolar milk to start flowing about one minute later.
(D) After 18 to 22 days and 3 hours prior to the evening milking, place the teat cannula in the left fore-teat and leave it for milk flow from the teat cistern till it ceases.
Choose the correct answer from the options given below which describe the correct sequential steps for early pregnancy diagnosis in cow. - Match List-I with List-II.Choose the correct answer from the options given below.
List-I (Toxic Element) List-II (Effect of toxicity on Animal) (A) Fluoride (I) Abdominal pain and diarrhea can be common clinical signs in animals exposed. (B) Arsenic (II) Short-term exposure may include nausea, vomiting, diarrhea, increase in blood pressure or heart rate, skin rashes and eye irritation. (C) Lead (III) Cattle can show clinical signs of depression, weakness and ataxia with postmortem findings of gastroenteritis and degenerative changes in the renal tubular epithelium. (D) Mercury (IV) Abdominal pain or colic, vomiting, a staggering gait and weakness, incoordination, rapid weak pulse and shock, diarrhea, followed by collapse and death. - Polygene term was given by one of the following?
- According to Hardy Weinberg Law, genotype frequencies in the progeny depend only on the
View More Questions
Top ICAR AIEEA Livestock Diseases Questions
- Which of the following antiviral drug is available for treatment of lumpy skin disease in cow?
- Recommended age at first dose of FMD vaccination in cattle and buffalo should be.
- What should be the normal limit of milk somatic cell count in indigenous dairy cow?
- Which of the following milk constituents show a significant reduction during subclinical mastitis infection?
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions