Q.Identify the odd one out.

Ranikhet, Coccidiosis and Fowl pox are all diseases of poultry, but Anthrax is primarily a disease of cattle and other livestock (caused by the bacterium Bacillus anthracis), making it the odd one out — option (c).

Checking each disease:

• (a) Ranikhet disease (Newcastle disease): a highly contagious VIRAL disease of poultry (fowls), causing respiratory and nervous symptoms and high mortality in birds.
• (b) Coccidiosis: a PROTOZOAN (Eimeria) disease of poultry affecting the intestine, causing bloody droppings and reduced growth in chicks. …

Poultry breeds are grouped by purpose — egg type (e.g., White Leghorn), meat/broiler type, dual purpose type, and ornamental type (e.g., Silkie, valued for appearance) — and 'Ornamental breeds – Silkie' is the correctly matched pair.

Standard poultry breed classification used in animal husbandry:

• Egg type (layer) breeds: bred mainly for high egg production, e.g., White Leghorn, Minorca.
• Meat type (broiler) breeds: bred for rapid growth and meat yield, e.g., Cornish, White Plymouth Rock (used in commercial broiler crosses).
• Dual purpose breeds: reared for both eggs and meat, e.g., New Hampshire, Plymouth Rock, Wyandotte.
• Ornamental breeds: kept for their unusual/decorative appearance rather than productivity, e.g., Silkie (fluffy plumage), Bantam, Sebright. …