Animal Husbandry and Veterinary Optional Paper 1 Question Paper 2025 with Detailed Solution; Download PDF

UPSC Mains 2025 Question Paper for Animal Husbandry and Veterinary Optional Paper 1 is available here to download in PDF Format. The exam has been conducted on August 31, 2025, in Afternoon Session (09:00 PM to 12:00 Noon). This Paper comprises 8 questions which are of 250 marks. The duration of the exam is 3 hours.

UPSC Mains Animal Husbandry and Veterinary Optional Paper 1 Question Paper 2025 with Detailed Solution; Download PDF (August 31, 2025)

Q1 (A) Write a short note on: Nervous control of respiration in animals.

Q1 (B) Write a short note on: National Livestock Health and Disease Control Programme.

Q1 (C) Write a short note on: Factors affecting pre- and post-natal growth in animals.

Q1 (D) Write a short note on: Write AIV method of silage preparation.

Q1 (E) Write a short note on: Explain the concept of Essential Amino Acid Index (EAAI) and its significance in evaluating protein quality.

Q2 (A) Write about the methods to calculate energy requirements for the maintenance of animals.

Q2 (B) Discuss the effects of ionophores on rumen metabolism.

Q2 (C) Name the different constituents of blood and write about their functions.

Q2 (D) Discuss the role of hormones secreted by adrenal gland with special reference to the survival of animals.

Q3 (A) Narrate the "Participatory Rural Appraisal" techniques used for rural planning.

Q3 (B) Define ethology. Describe in detail about the various types of behaviours in animals.

Q3 (C) Discuss the limiting nutrients and strategic feeding of high milk-yielding cows.

Q4 (A) Explain in detail about the classification of hormonal receptors and their functions.

Q4 (B) Discuss in detail the microbial digestion of carbohydrates in ruminants.

Q4 (C) Describe different factors which influence the voluntary feed intake in poultry.

Q4 (D) Write short notes on the following:
(i) Effect of amino acid imbalance in swine ration.
(ii) Circulation and functions of cerebrospinal fluid.
(iii) Reno-renal reflex and how it controls renal functions.
(iv) General functions of minerals in animals

Q5 (A) Recurrent selection and Reciprocal recurrent selection.

Q5 (B) Which are the processes preventing random assortment of genes to gametes? Describe them.

Q5 (C) Discuss the feeding strategies for animals in drought situations.

Q5 (D) Management of rabbits as meat animals.

Q5 (E) Factors affecting semen quality in vivo and in vitro.

Q6 (A) Describe different types of heritability based on genetic variance components.

Q6 (B) Explain in detail about the different methods of semen collection in livestock and poultry.

Q6 (C) Describe the different methods to estimate heritability in animals.

Q7 (A) Write in detail about "Dairying under mixed farming". What are its advantages over "Dairying under specialized farming" in the Indian context?

Q7 (B) Illustrate the systematic process involved in changing gene and genotype frequencies of a population.

Q7 (C) Throw light on socio-economic concepts of chicken egg production in India.

Q8 (A) Classify the investment, receipts and expenditure in a commercial dairy farm.

Q8 (B) Mention the signs of estrus in cattle and buffaloes. What is the time of insemination for better conception in these animals and why is it so?

Q8 (C) Give an account of individual selection, family selection and within-family selection.

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