(a)(i) Describe the effect of Avian Influenza Virus on Poultry industry and suggest the control measures to be adopted for effective control of Avian Influenza. Mention the WHO's guidelines for addressing the pandemic situation. (10 marks)

(a)(ii) D

Question

(a)(i) Describe the effect of Avian Influenza Virus on Poultry industry and suggest the control measures to be adopted for effective control of Avian Influenza. Mention the WHO's guidelines for addressing the pandemic situation. (10 marks)

(a)(ii) Discuss about the factors attributable to acetonaemia in buffalo alongwith its clinical findings, diagnosis, differential diagnosis and line of treatment. (10 marks)

(b) Explain stay apparatus and Bow and String mechanism in Horse. (15 marks)

(c) Explain clinical manifestation of diseases of the nervous system in domestic animals and enlist the methods of Neurological Examination. (15 marks)

UPSC Answer Check · Accepted Answer

The directive 'explain' requires clear, logical exposition of mechanisms and processes with cause-effect linkages. Allocate approximately 20% time/words to (a)(i) Avian Influenza [10 marks], 20% to (a)(ii) Acetonaemia [10 marks], 30% to (b) Stay apparatus [15 marks], and 30% to (c) Neurological diseases [15 marks]. Structure: brief introduction highlighting interconnectedness of metabolic, infectious and anatomical disorders; systematic body addressing each sub-part with diagrams for (b); conclusion emphasizing One Health approach and preventive veterinary medicine.
- For (a)(i): Economic impact of AIV (trade bans, culling costs, egg/meat production losses); biosecurity measures, stamping-out policy, vaccination strategies; WHO Pandemic Influenza Preparedness Framework and IHR 2005
- For (a)(ii): Negative energy balance, ketone body metabolism, high genetic merit, stress factors; acetone breath, nervous signs, hypoglycemia; milk ketone tests, calcium status; glucose therapy, propylene glycol, corticosteroids
- For (b): Reciprocal apparatus (patellar ligaments, check ligaments, stay apparatus of forelimb and hindlimb); passive stay mechanism enabling standing sleep; Bow and String theory (thoracolumbar fascia as bow, abdominal muscles as string) maintaining trunk rigidity
- For (c): Altered mentation, seizures, cranial nerve deficits, ataxia, paresis/paralysis, proprioceptive deficits; neurological examination: menace response, pupillary light reflex, palpebral reflex, gag reflex, limb proprioception, spinal reflexes, CSF analysis, advanced imaging
- Integration: Comparative aspects across species (horse vs ruminant vs poultry) and preventive veterinary medicine principles
- Current Indian context: H5N1/H9N2 outbreaks in Kerala/West Bengal; NDDB protocols; buffalo production systems in Indo-Gangetic plains

Dimension	Weight	Max marks	Excellent	Average	Poor
Demand-directive understanding	20%	10	Correctly interprets 'describe' for (a)(i) requiring impact enumeration, 'discuss' for (a)(ii) needing critical analysis of multifactorial etiology, and 'explain' for (b)-(c) demanding mechanistic clarity; balances exposition with analysis appropriate to each directive	Partially confuses directives—treats 'discuss' as mere description or 'explain' as simple listing; uneven treatment across sub-parts	Misidentifies directives entirely—writes narrative for all parts or ignores specific demands like WHO guidelines or differential diagnosis
Content depth & accuracy	20%	10	Precise anatomical terminology for stay apparatus (suspensory ligament, accessory ligament of deep digital flexor, patellar locking mechanism); accurate biochemical pathways in acetonaemia (BHBA, acetoacetate, acetone); correct viral subtypes (H5N1, H7N9, H9N2) with pathogenesis; comprehensive neurological lesion localization	Generally correct but imprecise—vague on reciprocal apparatus mechanics, omits key ketone bodies, mixes influenza A subtypes; superficial neurological localization	Major factual errors—confuses stay apparatus with stay sutures, describes acetonaemia as calcium deficiency, attributes neurological signs to wrong lesion levels; outdated influenza information
Structure & flow	20%	10	Clear demarcation of four components with appropriate weightage; logical progression within each (etiology → pathogenesis → clinical → diagnosis → treatment for acetonaemia; anatomy → function → clinical relevance for stay apparatus); effective signposting	Recognizable structure but uneven development—over-detailed on familiar topics, rushed on others; weak transitions between sub-parts	Disorganized stream-of-consciousness; no clear section breaks; misses entire components or merges them confusingly
Examples / case-law / data	20%	10	Cites specific Indian outbreaks (2024 Kerala H5N1, 2020 Maharashtra H9N2); references OIE/WOAH Terrestrial Code, Indian Veterinary Council regulations; mentions NDDB's NADCP; includes breed-specific susceptibility (Murrah buffalo acetonaemia); cites classic anatomical texts (Nickel et al., Dyce-Sack-Wensing)	Generic references to 'recent outbreaks' without specifics; mentions biosecurity without protocols; standard textbook citations without application	No examples or data; purely theoretical treatment; incorrect or fabricated outbreak references
Conclusion & analytical edge	20%	10	Synthesizes One Health approach connecting zoonotic AIV with veterinary public health; critiques limitations of stamping-out vs vaccination economics; evaluates modern diagnostic advances (PCR, ELISA) in neurological disease; proposes integrated metabolic disease monitoring for dairy buffaloes	Summarizes main points without synthesis; standard preventive recommendations without critical evaluation; no forward-looking perspective	Absent or abrupt conclusion; mere repetition of introduction; no analytical component or policy recommendation

(a)(i) Describe the effect of Avian Influenza Virus on Poultry industry and suggest the control measures to be adopted for…

Directive word: Explain

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