Animal Husbandry & Veterinary Science 2025 Paper I 50 marks Illustrate
Paper I — Q7
(a) Write in detail about "Dairying under mixed farming". What are its advantages over "Dairying under specialized farming" in…
(a) Write in detail about "Dairying under mixed farming". What are its advantages over "Dairying under specialized farming" in the Indian context ? 15+5=20 (b) Illustrate the systematic process involved in changing gene and genotype frequencies of a population. 15 (c) Throw light on socio-economic concepts of chicken egg production in India. 15
हिंदी में प्रश्न पढ़ें
(a) "मिश्रित खेती के अंतर्गत डेयरी" के बारे में विस्तार से लिखिए। भारतीय संदर्भ में "विशिष्ट खेती के अंतर्गत डेयरी" की तुलना में इसके क्या लाभ हैं ? 15+5=20 (b) किसी जनसंख्या की जीन एवं जीनप्ररूप (जीनोटाइप) आवृत्तियों को बदलने में सम्मिलित क्रमबद्ध प्रक्रिया को चित्रित कीजिए। 15 (c) भारत में मुर्गी के अंडे के उत्पादन की सामाजिक-आर्थिक अवधारणाओं पर प्रकाश डालिए। 15
Directive word: Illustrate
This question asks you to illustrate. The directive word signals the depth of analysis expected, the structure of your answer, and the weight of evidence you must bring.
See our UPSC directive words guide for a full breakdown of how to respond to each command word.
How this answer will be evaluated
Approach
The directive 'illustrate' in part (b) demands visual/diagrammatic representation with systematic explanation, while parts (a) and (c) require descriptive-analytical treatment. Allocate approximately 40% of time/words to part (a) given its 20 marks weightage, with 30% each to parts (b) and (c). Structure: Introduction defining mixed farming and population genetics concepts → Body with detailed treatment of each sub-part using diagrams for (b) → Conclusion synthesizing how integrated dairy systems and genetic improvement converge in Indian livestock development.
Key points expected
- Part (a): Definition and characteristics of dairying under mixed farming (crop-livestock integration, smallholder systems, use of crop residues and manure recycling); comparison with specialized dairy farming (capital intensity, scale, feed dependency, market orientation); India-specific advantages: risk distribution, resource use efficiency, employment generation, suitability for marginal farmers, organic manure availability, and resilience against price volatility
- Part (b): Hardy-Weinberg equilibrium as baseline; systematic factors changing gene/genotype frequencies: mutation, migration/gene flow, genetic drift (founder effect, bottleneck), natural selection (directional, stabilizing, disruptive), and artificial selection; mating systems (assortative, disassortative, inbreeding, outbreeding); diagrammatic representation of selection response and changes in allelic frequencies over generations
- Part (c): Socio-economic dimensions of layer poultry: backyard vs. commercial systems; role in women empowerment and nutritional security; contract farming models (Suguna, Venkateshwara); regional disparities (Andhra Pradesh, Tamil Nadu dominance); feed cost-price squeeze; disease outbreaks (Avian Influenza) and biosecurity economics; government schemes (Rural Backyard Poultry Development, NADCP)
- Integration point: How mixed farming dairy and poultry egg production represent complementary livelihood strategies in Indian smallholder agriculture, with population genetics principles underlying breed improvement in both sectors
- Critical analysis: Challenges facing mixed farming dairy (declining grazing lands, labour shortage) and socio-economic barriers in poultry (middlemen exploitation, market access for small producers)
Evaluation rubric
| Dimension | Weight | Max marks | Excellent | Average | Poor |
|---|---|---|---|---|---|
| Demand-directive understanding | 20% | 10 | For (a), clearly distinguishes 'mixed' from 'specialized' farming using definitional precision; for (b), provides actual diagrams/flowcharts illustrating systematic genetic change processes (not just text); for (c), interprets 'socio-economic concepts' beyond production statistics to include institutional and gender dimensions; all three parts address their specific directive demands without conflation | Defines mixed and specialized farming but comparison lacks analytical depth; describes genetic factors textually without visual illustration; lists poultry statistics without unpacking socio-economic mechanisms; partial mismatch between directive demands and response approach | Treats all parts generically without recognizing (b)'s diagrammatic requirement; confuses mixed farming with diversified farming; reduces socio-economic concepts to mere production data; fails to distinguish between gene frequency and genotype frequency in explanation |
| Content depth & accuracy | 20% | 10 | Demonstrates command of quantitative genetics (selection differential, heritability, response equations) in (b); cites specific mixed farming systems (Khadan in Bengal, Kheti in Punjab) in (a); references FAO/ICAR data on backyard poultry contribution to household income in (c); accurate technical terminology throughout (linkage disequilibrium, effective population size, Gini coefficient applications) | Correct basic concepts but lacks quantitative depth; mentions Indian examples without specificity; generic description of genetic mechanisms; poultry discussion mixes layers and broilers indiscriminately; minor technical inaccuracies in genetic formulae | Confuses genotype with phenotype frequencies; describes specialized farming advantages instead of mixed farming; conflates egg production systems with meat production; significant factual errors (e.g., stating Hardy-Weinberg applies under selection); superficial treatment across all parts |
| Structure & flow | 20% | 10 | Clear tripartite organization with visible sub-headings; part (a) flows from definition → characteristics → systematic comparison → India-specific advantages; part (b) progresses from equilibrium → disturbing factors → selection mechanisms → population consequences; part (c) moves from production systems → socio-economic actors → policy interface; effective transitions between theoretical and applied dimensions | Identifiable structure but uneven development—typically overdeveloped (a) and underdeveloped (b) or (c); some logical gaps in genetic change sequence; poultry section mixes descriptive and analytical elements without clear progression; adequate but not elegant transitions | Poorly demarcated parts with overlapping content; (b) buried within (a) or missing entirely; illogical sequence (discussing advantages before defining mixed farming); abrupt shifts between technical genetics and poultry economics; no visible organization strategy |
| Examples / case-law / data | 20% | 10 | For (a): cites Operation Flood's impact on mixed farming, Amul model, or NABARD's Joint Liability Groups; for (b): illustrates with Indian cattle breed improvement (Gir, Sahiwal selection) or poultry line development (ILBF-layer); for (c): references 20th Livestock Census data, National Egg Coordination Committee price trends, or specific state schemes (Telangana's sheep distribution including poultry integration); contemporary data (2019-2024) | Generic references to 'Indian farmers' without specificity; mentions Operation Flood without connecting to mixed farming; outdated livestock census data; standard textbook examples (Darwin's finches) without Indian livestock application; poultry statistics without source attribution | No Indian examples in any part; purely theoretical treatment; incorrect or fabricated data; examples from crop agriculture misapplied to livestock; complete absence of empirical grounding for socio-economic claims in (c) |
| Conclusion & analytical edge | 20% | 10 | Synthesizes how mixed farming dairy and backyard poultry represent resilient, low-carbon protein production systems suited to climate variability; connects population genetics principles to India's breed conservation dilemmas (desi vs. exotic); critically evaluates whether specialized farming is inevitable given land fragmentation trends; offers policy-relevant observations (integration of livestock in crop insurance, community breeding programs); forward-looking conclusion on sustainable intensification | Summarizes main points without synthesis; generic conclusion on 'importance of livestock'; acknowledges challenges but offers no critical perspective; misses opportunity to connect sub-parts thematically; standard optimistic closing without analytical tension | No conclusion or abrupt ending; purely descriptive summary; contradicts earlier analysis; irrelevant digression; fails to address any of the three sub-parts in closing; ideological stance (pro-/anti-specialization) without evidence |
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