UPSC Civil Services (Main) Examination 2026 — Animal Husbandry and Veterinary Science Optional Paper I: Question Paper | Plutus IAS

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21 Sep UPSC Civil Services (Main) Examination 2026 — Animal Husbandry and Veterinary Science Optional Paper I: Question Paper | Plutus IAS

Posted at 21 Sep 2026 in UPSC by
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The questions below are from Animal Husbandry and Veterinary Science Optional Paper I of UPSC Civil Services (Main) Examination 2026 (held 2026-08-30) — the actual paper, which is public government content. This page carries the questions for reference and revision; model answers for this paper are not published here.

Official paper (PDF): upsc.gov.in.

  1. Answer the following in about 150 words each : 10×5=50 (a) Classify the minerals required by animals and discuss the functions of calcium in animals. (b) Discuss the development of feed industry in India and describe the activities of CLFMA. (c) Discuss the role of blood in regulating body temperature of animals. (d) How do maternal nutrition and uterine environment in animals influence the prenatal development of fetus compared to postnatal growth? Explain. (e) How do different extenders and preservation methods affect fertilization capacity of sperms? Explain.
  2. (a) Discuss the salient features of feeding broiler chicks for meat production. 20 (b) Describe the feeding of sheep for good quality wool production. 15 (c) What is bulk? Discuss its importance in feeding of ruminants. 15
  3. (a) Explain why animals with high metabolic rate require more complex excretory and circulatory system. (b) Explain the three major stages of blood coagulation including the role of platelets and fibrinogen. (c) What is the role of chemoreceptors in regulating heartbeat and cardiac output during hypoxia?
  4. (a) "Silent heat is not a disease, but a failure of management." Critically evaluate this statement in the context of dairy animals. (b) Explain the role of early embryonic mortality in repeat breeding and enlist the main factors affecting it. (c) How do high temperature and humidity impact spermatogenesis, libido and semen quality parameters like sperm motility and morphology? (d) Explain why chickens excrete nitrogenous waste primarily as uric acid rather than urea.
  5. Write notes on/Answer the following in about 150 words each : 10×5=50 (a) Impact of genetic drift on the conservation of endangered species (b) Selection for threshold traits is often frequency-dependent. (c) Mention the salient features for socio-economic considerations in livestock farming. (d) Factors affecting production efficiency of dairy animals (e) Describe the steps involved in the production of recombinant DNA.
  6. (a) Explain the genetic mechanism behind inbreeding depression. Why does continuous inbreeding lead to a reduction in fertility and life capacity in livestock? (b) What do you mean by Hardy-Weinberg law of equilibrium? Describe the factors that alter this equilibrium in livestock population. (c) How can repeated measurements be used to distinguish between temporary and permanent environmental effects in livestock?
  7. (a) How do you estimate the cost of milk production in organised and unorganised dairy sector in India? (b) Explain the significance of record-keeping in livestock production. (c) Discuss the feeding and management of poultry for commercial egg production. (d) Give the criteria for preparation of practical and economic ration for swine production.
  8. (a) How do you assess the training needs of rural farmers to ensure that they are relevant and practical? Discuss in what way socio-economic factors affect the effectiveness of extension education methods. (b) Discuss the philosophical belief that extension methods empower rural individuals rather than to create dependency. How do you overcome the initial reluctance of livestock farmers to participate in method demonstration on their animals? (c) What role do you think gender plays in accessing and using improved livestock technologies? Explain. ★★★ SB27—48

Questions reproduced from the official paper for study purposes; verify on the exam-conducting body’s official website.

Related — other papers of this exam

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