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Animal Husbandry & Veterinary Science 2023 Paper II 50 marks 150 words Compulsory Describe

Paper II — Q5

Describe the following in about 150 words each: (a) Quarantine as a measure to prevent the spread of animal disease (10…

Describe the following in about 150 words each: (a) Quarantine as a measure to prevent the spread of animal disease (10 marks) (b) Preparation of flavoured and sterilized milk (10 marks) (c) Difference in the physical quality and chemical composition of cow and buffalo khoa (10 marks) (d) Value-added poultry meat products (10 marks) (e) Physico-chemical changes in meat after slaughter (10 marks)

हिंदी में प्रश्न पढ़ें

निम्नलिखित में से प्रत्येक की लगभग 150 शब्दों में विवेचना कीजिए : (a) पशु रोग प्रसार को रोकने के एक उपाय के रूप में संगरोध (10 अंक) (b) सुगंधित और विसंक्रमित दूध तैयार करना (10 अंक) (c) गाय एवं भैंस के खोवा के भौतिक गुण व रासायनिक संरचना में अंतर (10 अंक) (d) मूल्य-वर्धित कुक्कुट मांस उत्पाद (10 अंक) (e) वध के उपरांत मांस में भौतिक-रासायनिक परिवर्तन (10 अंक)

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Directive word: Describe

This question asks you to describe. 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 'describe' requires factual, systematic exposition of processes, characteristics and differences across all five sub-parts. Allocate approximately 30 words per mark (150 words × 5 parts = 750 total). Structure each sub-part as: (a) definition/purpose → mechanism → significance; (b) ingredients → processing steps → packaging; (c) tabular comparison of physical then chemical attributes; (d) categories with 2-3 named products each; (e) chronological stages from slaughter to rigor resolution. No integrated conclusion needed; each part should end with its own significance statement.

Key points expected

  • (a) Quarantine: definition as isolation of healthy/suspect animals; duration (21-40 days for most diseases); OIE/WOAH guidelines; Indian Livestock Importation Act 1898; segregation, observation, testing protocols; post-quarantine release or destruction decision
  • (b) Flavoured sterilized milk: ingredients (milk, sugar, flavouring, colour); standardization (3% fat, 8.5% SNF); pre-heating (82-85°C/10 min); homogenization (150-200 bar); flavour addition; in-bottle sterilization (116-118°C/15-20 min); cooling; storage stability
  • (c) Khoa comparison: physical—buffalo khoa harder, granular, pale cream; cow khoa softer, smooth, yellowish; chemical—buffalo higher fat (37% vs 28%), higher total solids (55% vs 50%), lower moisture; cow khoa higher lactose, more prone to browning; yield differences
  • (d) Value-added poultry products: categories—emulsion-based (frankfurters, nuggets), restructured (patties, rolls), marinated (tandoori, tikka), smoked/cured, ready-to-cook/ready-to-eat; specific Indian products (chicken seekh kebab, momos); shelf-life extension, convenience, higher returns
  • (e) Post-slaughter changes: pre-rigor (glycolysis, ATP decline, pH 7.0→5.5); rigor mortis (actin-myosin complex, muscle stiffening, 24-48h); resolution (proteolysis, tenderization); physical changes—colour (purple→bright red→brown), water holding capacity, rigidity; chemical—lactic acid accumulation, protein denaturation

Evaluation rubric

DimensionWeightMax marksExcellentAveragePoor
Demand-directive understanding15%7.5Demonstrates precise understanding that 'describe' requires systematic, factual exposition rather than argumentation; for (a) covers purpose-mechanism-outcome; for (b) presents sequential process; for (c) uses comparative framework; for (d) classifies with specificity; for (e) follows chronological rigor progressionGenerally understands 'describe' but mixes with explanation or evaluation; some parts lack systematic coverage or confuse with 'discuss'; uneven treatment across sub-partsMisinterprets directive as 'explain' or 'evaluate'; provides opinion where facts needed; skips essential descriptive elements in multiple parts; narrative style without technical precision
Content depth & accuracy30%15All five parts show accurate technical specifications: (a) correct quarantine periods and legal framework; (b) precise temperature-time combinations for sterilization; (c) accurate fat/SNF percentages for khoa types; (d) scientifically valid product categories with processing basis; (e) correct pH values, biochemical pathways and timeframes for rigor stagesGenerally accurate but with minor errors in 1-2 parts: vague temperature ranges, approximate rather than precise composition values, missing one biochemical pathway, or conflating similar product categoriesSignificant factual errors in 3+ parts: incorrect sterilization temperatures, reversed khoa characteristics, confused rigor timeline, or scientifically unsound product classifications; demonstrates inadequate subject mastery
Structure & flow20%10Each 150-word segment internally structured with clear progression; (a) isolation→testing→disposal; (b) ingredient→processing→packaging; (c) parallel physical then chemical comparison; (d) category→example→benefit; (e) pre-rigor→rigor→resolution; logical connectors between sentences; no paragraph fragmentationBasic structure present but uneven: some parts well-organized, others as bullet-like lists without flow; (c) may lack clear comparison framework; (e) may mix stages chronologically; minor word limit violations in 1-2 partsPoorly structured with rambling or fragmented presentation; no clear internal logic in 3+ parts; severe word imbalance (some parts 50 words, others 250); disorganized lists without sentence connectivity
Examples / case-law / data20%10Rich specific references: (a) cites Livestock Importation Act 1898, Indian quarantine stations (Chennai, Mumbai); (b) names FSSAI standards for sterilized milk; (c) provides precise analytical data (fat 37% buffalo vs 28% cow, moisture 40% vs 50%); (d) cites specific brands/products (Venky's nuggets, Suguna ready-to-cook); (e) cites pH 5.4-5.5 ultimate, 24h rigor onsetSome specific references but incomplete: mentions quarantine law without Act name, gives approximate rather than precise compositional data, generic product examples without Indian specificity, or rounded pH values without precisionVirtually no specific data, legal references, or named examples; relies entirely on generic descriptions; no numerical values for composition or pH; fails to cite any Indian regulatory framework or commercial products
Conclusion & analytical edge15%7.5Each sub-part ends with significance statement showing applied understanding: (a) quarantine's role in disease-free zone maintenance; (b) sterilized milk's importance for tropical distribution; (c) implications for khoa-based sweet manufacture; (d) value addition for farmer income and food security; (e) implications for meat processing industry; demonstrates integration of technical knowledge with sectoral relevanceSome parts have concluding significance, others end abruptly; conclusions are generic ('therefore it is important') rather than sector-specific; limited demonstration of applied analytical thinkingNo concluding statements in most parts; purely descriptive without any analytical framing; fails to connect technical content to animal husbandry sector outcomes or policy relevance

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