(a) Discuss the etiology, epidemiology, pathogenesis, symptoms, postmortem lesions, diagnosis and control of Foot and Mouth Disease (FMD) in cattle. (20 marks)
(b) Describe the boundaries of the abdominal cavity in Ox. Write down its contents (intern

Question

(a) Discuss the etiology, epidemiology, pathogenesis, symptoms, postmortem lesions, diagnosis and control of Foot and Mouth Disease (FMD) in cattle. (20 marks)
(b) Describe the boundaries of the abdominal cavity in Ox. Write down its contents (internal organs). How will you divide the abdomen into nine regions by imaginary lines for topographic purposes and what is its clinical importance? (20 marks)
(c) What are the reasons for the failure of vaccination in animals? (10 marks)

UPSC Answer Check · Accepted Answer

The directive 'discuss' for part (a) requires comprehensive, analytical coverage with interconnections between etiology, epidemiology and control; 'describe' in part (b) demands precise anatomical detailing with topographic application; while part (c) needs systematic enumeration with clinical reasoning. Allocate approximately 40% of effort to part (a) given its 20 marks and multi-component demand, 35% to part (b) for its anatomical complexity and diagrammatic potential, and 25% to part (c). Structure with brief introductions for each part, systematic body coverage, and integrated conclusions linking FMD control to vaccination failure and abdominal examination to diagnostic practice.
- Part (a): FMD virus classification (Picornaviridae, Aphthovirus, 7 serotypes), transmission dynamics including carrier state in ruminants, vesicle pathogenesis with histological changes, differential diagnosis from vesicular stomatitis and BVD, FMD-CP (Control Programme) with stamping-out policy and ring vaccination in India
- Part (a): Economic impact and OIE (WOAH) notifiable status, emergency vaccination protocols, biosecurity measures including 21-day movement restrictions, and recent DIVA (Differentiating Infected from Vaccinated Animals) marker vaccine strategies
- Part (b): Complete boundaries—cranial (diaphragm), dorsal (lumbar vertebrae and muscles), lateral (abdominal muscles and ribs), ventral (floor muscles), caudal (pelvic inlet); organ listing by species-peculiarity including rumen compartments, reticulum, omasum, abomasum, liver, spleen, intestines, kidneys, and reproductive organs
- Part (b): Nine-region division using two horizontal planes (last rib and tuber coxae) and two sagittal planes (midline and paralumbar fossa boundaries); clinical importance for rumenotomy site selection, abomasal displacement localization, peritonitis diagnosis, and trocarization/cannulation sites
- Part (c): Vaccination failure categories—antigenic (strain mismatch, inadequate antigen mass), host-related (immunocompromised status, maternal antibody interference, genetic non-responder), procedural (cold chain breach, improper route/interval, adjuvant incompatibility), and environmental (concurrent infection, nutritional deficiency, stress)

Dimension	Weight	Max marks	Excellent	Average	Poor
Demand-directive understanding	20%	10	For (a), integrates etiology-epidemiology-pathogenesis into a coherent disease narrative rather than listing; for (b), precisely applies 'describe' to boundaries and contents with functional anatomical reasoning; for (c), distinguishes between primary and secondary vaccine failure with mechanistic explanation	Addresses each directive superficially—lists FMD components without integration, describes boundaries without topographic application, enumerates failure reasons without categorization or mechanism	Misinterprets directives—narrates without analysis for (a), omits boundaries or confuses regions for (b), provides generic causes without veterinary specificity for (c)
Content depth & accuracy	20%	10	Part (a) includes serotype-specific behavior, carrier state duration, and latest DIVA vaccine technology; part (b) specifies exact vertebral levels for planes and species-specific organ positions; part (c) covers cold chain specifics and interference phenomena with scientific precision	Covers all components factually but with gaps—misses carrier state significance, provides approximate rather than precise anatomical landmarks, lists common failure reasons without depth	Significant factual errors—wrong virus family, incorrect serotype number, misplaced organs, confused anatomical planes, or irrelevant failure reasons from human medicine
Structure & flow	20%	10	Clear tripartite division with internal subheadings; for (a) follows natural disease progression; for (b) proceeds from boundaries→contents→division→clinical application; for (c) uses logical categorization; smooth transitions between parts with time management evident	Identifiable parts but uneven development—overextended on FMD epidemiology, compressed anatomy, or vaccination failure; some subheadings present but inconsistent hierarchy	Poorly demarcated parts, no subheadings, rambling structure, or severe imbalance such as omitting one part entirely or conflating (b) and (c)
Examples / case-law / data	20%	10	Cites FMD outbreaks in India (2001, 2008, 2013) with serotype O predominance; references Project Directorate on Foot and Mouth Disease (ICAR-DFMD) Mukteswar; uses specific anatomical references from R. Getty or K.M. Dyce; mentions Indian vaccine production institutions (IVRI, BAIF); includes vaccination coverage statistics	Generic mention of FMD outbreaks without specifics, standard textbook anatomy without authoritative citation, common knowledge examples without Indian context or institutional reference	No examples, irrelevant human medical data, or fabricated statistics; anatomical descriptions without species specificity for Ox
Conclusion & analytical edge	20%	10	Synthesizes across parts—links FMD control challenges to vaccination failure categories, connects anatomical regionalization to modern imaging/ultrasonography applications; proposes One Health integration or policy recommendations for FMD eradication by 2030; demonstrates veterinary clinical reasoning	Brief per-part summaries without cross-connection, restates main points without synthesis, limited forward-looking or policy content	Absent or abrupt conclusion, no integration between parts, purely descriptive ending without analytical value or clinical application

(a) Discuss the etiology, epidemiology, pathogenesis, symptoms, postmortem lesions, diagnosis and control of Foot and Mouth…

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