Why are Indian poultry breeds cross-bred with exotic breeds to improve productivity?

RRB Nsg. Superintendent-2026 (Shift -1st)

Non-Nursing Subjects (E5)

Medium

Appeared in: RRB Nsg. Superintendent-2026 (Shift -1st)

Explanation

The core principle of this practice is to combine the high productivity (e.g., more eggs, faster meat growth) of exotic breeds with the superior resilience and local adaptability of indigenous Indian breeds.
Exotic breeds, such as White Leghorn, are selected for their high-yield genetic traits but often struggle in local Indian climates and are susceptible to local diseases.
Indigenous breeds, like Aseel, are hardy, resistant to common diseases, and well-adapted to hot climates and sometimes lower-quality feed, but they have lower productivity.
The resulting hybrid aims to be a 'win-win' variety that is both economically productive and can thrive in the local environment, leading to sustainable poultry farming.

Option A: This is incorrect because ignoring adaptability would result in a flock that cannot survive local conditions, leading to high losses. Adaptability from the Indian breed is a key reason for the cross.
Option B: Cross-breeding produces new varieties or hybrids within the same species (Gallus gallus domesticus), not entirely new species. Speciation is a long-term evolutionary process.
Option D: This describes cloning, not cross-breeding. Cross-breeding intentionally combines different genetic pools, which increases genetic variation rather than eliminating it.

Visual 1: Flowchart: Illustrating the cross-breeding strategy: Exotic Breed (High Yield) + Indigenous Breed (High Adaptability) → Hybrid Progeny (High Yield + High Adaptability).
Visual 2: Comparison Table: Outlining the key characteristics of exotic poultry breeds (e.g., Leghorn) versus indigenous Indian breeds (e.g., Aseel) across metrics like productivity, disease resistance, and feed requirements.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Animal Husbandry: Cross-breeding in Poultry as background academic context rather than a clinical decision trigger.
This concept is fundamental to understanding food security and sustainable agriculture in India. Improved poultry varieties provide a vital source of protein and income for rural populations.
Knowledge of breeding principles helps in appreciating the importance of conserving genetic diversity in native livestock breeds, which are a valuable resource for future breeding programs.
What if? If a new, highly contagious poultry disease emerges, the genetic resistance found in indigenous breeds and their cross-bred descendants could be crucial for the survival of the poultry industry, unlike a uniform population of susceptible exotic birds which could be wiped out.

How to Approach the Question

First, identify the core subject: animal husbandry and the purpose of breeding.
Break down the key terms: 'Indian poultry breeds' (implying local adaptation and hardiness), 'exotic breeds' (implying high production but not adapted), and 'cross-bred' (implying combination).
Formulate a logical hypothesis: The goal of combining these two groups must be to get the best qualities of each – the production of the exotic breed and the hardiness of the local breed.
Evaluate the options based on this hypothesis. Option C directly states this combined goal.
Eliminate the other options by identifying why they are incorrect. Option A is illogical (ignoring survival), Option B describes speciation (incorrect process), and Option D describes cloning (incorrect process).

Concept Tested & Keywords

Concept Tested: Animal Husbandry: Cross-breeding in Poultry
Stem keywords: Indian poultry breeds, cross-bred, exotic breeds, improve productivity
Lead-in keywords: Why

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