Paper I — Q2
(a) Write about the feeding of swine for lean meat production and its importance in human health. (10+5 marks) (b) Discuss about…
(a) Write about the feeding of swine for lean meat production and its importance in human health. (10+5 marks) (b) Discuss about the mechanism of blood coagulation in pigs. (10 marks) (c) What are natural antioxidants? Describe the role of antioxidants in animal body. (5+10 marks) (d) Give a diagrammatic representation of male reproductive organs of bovine. (10 marks)
हिंदी में प्रश्न पढ़ें
(a) शूकरों से कम वसायुक्त मांस उत्पादन हेतु उनकी आहार व्यवस्था एवं मानव स्वास्थ्य में इसके महत्व के बारे में लिखिये । (10+5 अंक) (b) शूकरों में रक्त जमावट की प्रक्रिया की विवेचना कीजिये । (10 अंक) (c) प्राकृतिक आक्सीकरणरोधी (एन्टी आक्सीडेंट) क्या होते हैं ? पशुओं के शरीर में इन आक्सीकरणरोधी तत्वों की भूमिका का वर्णन कीजिये । (5+10 अंक) (d) गोवंशीय पशुओं के नर जनन अंगों का आरेखीय निरूपण कीजिये । (10 अंक)
Directive word: Discuss
This question asks you to discuss. 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 'discuss' requires comprehensive treatment with critical analysis across all four sub-parts. Allocate approximately 35% time/words to part (a) given its 15 marks, 20% each to parts (b) and (c), and 25% to part (d) including diagram construction. Structure as: brief introduction → systematic treatment of (a)-(d) with clear sub-headings → integrated conclusion linking swine nutrition to food security and One Health.
Key points expected
- Part (a): Nutritional strategies for lean meat production in swine—low energy:protein ratios, lysine optimization, phase feeding, use of ractopamine (where permitted); health benefits—lower saturated fat, higher protein bioavailability, reduced cardiovascular disease risk, role in India's protein security under National Livestock Mission
- Part (b): Mechanism of blood coagulation in pigs—extrinsic and intrinsic pathways, role of vitamin K-dependent clotting factors (II, VII, IX, X), thrombin formation, fibrinogen conversion, platelet activation; species-specific aspects like porcine von Willebrand disease relevance
- Part (c): Natural antioxidants—vitamin E, selenium, carotenoids, polyphenols, flavonoids; their role in scavenging free radicals, preventing lipid peroxidation, maintaining membrane integrity, immune modulation, reproductive performance, and meat quality preservation
- Part (d): Diagrammatic representation of bovine male reproductive organs—scrotum, testes, epididymis, vas deferens, ampulla, seminal vesicles, prostate, bulbourethral glands, penis, sigmoid flexure; proper labeling and functional correlation
- Integration: Connection between antioxidant nutrition and meat quality/shelf life; link between lean pork production and sustainable animal agriculture
Evaluation rubric
| Dimension | Weight | Max marks | Excellent | Average | Poor |
|---|---|---|---|---|---|
| Demand-directive understanding | 15% | 7.5 | Correctly interprets 'discuss' for (b) with balanced exposition and critical insight; 'write about' for (a) as descriptive-analytical; 'what are' and 'describe' for (c) as definitional followed by elaboration; 'give diagrammatic representation' for (d) as precise visual communication with explanatory notes | Partially understands directives—treats 'discuss' as mere description, misses analytical component; diagram present but inadequately explained | Misinterprets directives—writes short notes for all parts, no discussion; omits diagram or provides unlabeled sketch |
| Content depth & accuracy | 30% | 15 | Precise biochemical pathways for coagulation (cascade with factors); specific amino acid requirements for lean gain (lysine:ME ratios); accurate anatomical details with zoological nomenclature; scientifically valid antioxidant mechanisms with cellular localization | General description of coagulation without factor specificity; vague feeding principles; basic antioxidant list without mechanism; diagram broadly correct but missing key structures | Fundamental errors—confuses intrinsic/extrinsic pathways, incorrect amino acid emphasis, anatomical mislabeling, conflates antioxidants with antibiotics |
| Structure & flow | 20% | 10 | Clear four-part architecture with consistent sub-headings; logical progression from production (a) → physiology (b) → health (c) → reproduction (d); smooth transitions between applied and basic science; diagram integrated with text | Identifiable parts but uneven development; some sub-parts merged confusingly; diagram separate from textual flow | Unstructured narrative without part demarcation; diagram absent or misplaced; no logical sequence between disparate topics |
| Examples / case-law / data | 20% | 10 | ICAR-NIANP (National Institute of Animal Nutrition and Physiology) feeding standards for pigs; FAO/WHO recommendations on lean meat consumption; Indian Council of Medical Research data on pork consumption patterns; specific studies on vitamin E-selenium synergy in pig diets; breed-specific examples (Large White Yorkshire, Desi pigs) | Generic references to 'research shows' without attribution; common knowledge examples without institutional backing; no Indian context | No examples or data; irrelevant examples from other species; fabricated statistics |
| Conclusion & analytical edge | 15% | 7.5 | Synthesizes swine nutrition with One Health perspective—animal welfare, human nutrition security, environmental sustainability; critical assessment of antibiotic-free production using antioxidants; forward-looking comment on precision livestock farming in India | Summarizes main points without synthesis; generic concluding statement on importance of animal science | No conclusion; abrupt ending with part (d); or irrelevant philosophical statement |
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