Paper I — Q8
(a) Classify the investment, receipts and expenditure in a commercial dairy farm. 20 (b) Mention the signs of estrus in cattle…
(a) Classify the investment, receipts and expenditure in a commercial dairy farm. 20 (b) Mention the signs of estrus in cattle and buffaloes. What is the time of insemination for better conception in these animals and why is it so ? 5+10=15 (c) Give an account of individual selection, family selection and within-family selection. 15
हिंदी में प्रश्न पढ़ें
(a) एक वाणिज्यिक डेयरी फार्म में निवेश, प्राप्तियाँ एवं व्यय को वर्गीकृत कीजिए। 20 (b) गायों तथा भैंसों में मदचक्र के लक्षण बताइए। इन पशुओं में बेहतर गर्भधारण के लिए गर्भाधान का समय क्या है और ऐसा क्यों होता है ? 5+10=15 (c) व्यक्तिगत चयन, पारिवारिक चयन और अंतःपारिवारिक (विदिन-फैमिली) चयन का विवरण दीजिए। 15
Directive word: Classify
This question asks you to classify. 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 'classify' in part (a) demands systematic categorization with clear headings and sub-headings; parts (b) and (c) require 'mention' and 'give an account' respectively, calling for descriptive precision. Allocate approximately 40% of time/words to part (a) given its 20 marks, 30% each to parts (b) and (c). Structure with a brief introduction on dairy economics and breeding importance, then three distinct sections for each sub-part, and a concluding synthesis on integrated dairy farm management.
Key points expected
- Part (a): Investment classification into fixed (land, building, equipment, milch animals) and working capital (feed, fodder, labor, veterinary expenses); receipts from milk sales, manure, calves, and cull animals; expenditure on feed (60-70%), labor, breeding, healthcare, and miscellaneous overheads
- Part (a): Economic indicators like cost of milk production, net income per cow, benefit-cost ratio, and break-even analysis for commercial viability assessment
- Part (b): Estrus signs in cattle (mounting, bellowing, mucus discharge, swollen vulva) and buffaloes (silent estrus, reduced feed intake, restlessness, characteristic vocalization); optimal AI timing at 12-24 hours after onset in cattle and 18-24 hours in buffaloes due to ovulation patterns
- Part (b): Scientific rationale for timing based on ovulation occurring 24-32 hours post-estrus onset, sperm capacitation time, and egg viability window
- Part (c): Individual selection based on own phenotype and breeding value; family selection using full-sib and half-sib averages; within-family selection removing family mean effects to exploit Mendelian sampling variance
- Part (c): Comparison of selection methods with respect to heritability, accuracy of genetic evaluation, and applicability in dairy cattle breeding programs under Indian conditions
Evaluation rubric
| Dimension | Weight | Max marks | Excellent | Average | Poor |
|---|---|---|---|---|---|
| Demand-directive understanding | 20% | 10 | For (a), produces hierarchical classification with mutually exclusive, exhaustive categories using standard accounting frameworks; for (b), precisely interprets 'mention' as brief enumeration plus explanatory depth for the 'why' component; for (c), distinguishes 'give an account' as comprehensive description with comparative analysis, not mere definition-listing | Attempts classification in (a) but categories overlap or miss key components; in (b) lists signs without physiological explanation; in (c) defines three selection types without comparing their genetic assumptions | Misinterprets directives—narrates dairy farm story instead of classifying; describes general reproduction without estrus specifics; confuses selection methods with selection indices |
| Content depth & accuracy | 20% | 10 | Accurate feed:cost ratios (60-70% of total expenditure); correct ovulation timing (cattle 24-32h, buffalo 30-36h post-estrus); precise genetic parameters (heritability ranges, accuracy formulas for family selection); cites NDDB/ICAR standards for economic benchmarks | Broadly correct figures but imprecise percentages; general estrus description without species differentiation; understands selection concepts but conflates family and pedigree selection | Incorrect cost structures (e.g., labor as highest expense); wrong AI timing recommendations; fundamental errors in genetic selection theory (e.g., claiming within-family selection uses phenotypic values directly) |
| Structure & flow | 20% | 10 | Clear tripartite structure with visible sub-headings (a), (b), (c); within (a), logical flow from capital structure → operational economics → profitability metrics; within (b), signs → timing → physiological rationale; within (c), parallel presentation of each method with unified comparison table | Identifiable parts but uneven development—(a) disproportionately long; some mixing of estrus signs between species; selection methods presented sequentially without integration | Unstructured narrative without part demarcation; random interspersing of investment and breeding content; no logical progression within any section |
| Examples / case-law / data | 20% | 10 | References specific Indian schemes (NDP-I, Rashtriya Gokul Mission); cites actual farm economic data from NDDB annual reports or state dairy federations (e.g., Gujarat/Amul model); mentions ICAR-NDRI research on estrus detection technologies; illustrates selection methods with proven sire examples from progeny testing programs | Generic mention of 'cooperative sector' without specifics; standard textbook examples without contemporary data; no Indian research citations | No data, examples, or institutional references; hypothetical farm scenarios; outdated or irrelevant international examples without Indian context |
| Conclusion & analytical edge | 20% | 10 | Synthesizes how accurate economic classification enables breeding investment decisions; critiques silent estrus in buffaloes as constraint requiring hormone-assisted breeding; evaluates which selection method suits Indian smallholder vs. commercial herd structures; suggests precision livestock technologies for integration | Brief summary of three parts without synthesis; generic statement on 'balanced approach'; no critical evaluation of methods | No conclusion; abrupt ending; or irrelevant generalities about dairy development unrelated to question specifics |
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