QUESTION BANK 2020 Tamil Nadu Veterinary and Animal Sciences University QUESTION BANK for Competitive Examinations (VETERINARY AND ANIMAL SCIENCES) Compiled by Dr. A. MANIVANNAN Dr. P. VISHA Dr. M. DHANALAKSHMI Dr. A. ELAMARAN Dr. B. KARTHIK Dr. T. SIVAKUMAR Education Cell Veterinary College and Research Institute Orathanadu – 614 625, Thanjavur District 2020 QUESTION BANK, VCRI, ORATHANADU-614 625 Page 1 QUESTION BANK 2020 QUESTION BANK, VCRI, ORATHANADU-614 625 Page 2 QUESTION BANK 2020 Sl. no. Contents Page No. Animal Genetics and Breeding 1. 04 – 17 Dr. P. Vijayakumar,Assistant Professor, LFC Veterinary and Animal Husbandry Extension Education 2. Dr.K.P.Saravanan, Assistant Professor, VAE and 18 – 28 Dr.V.Sasikala, Assistant Professor, VAE Animal Nutrition 3. Dr.K.Ayyappan, Assistant Professor, ANN and 29 – 42 Dr.M.Palanivel. Assistant Professor, ANN Veterinary Clinical Medicine 4. 43 – 49 Dr. M. Saravanan, Assistant Professor, VCC Livestock Production Management 5. 50 – 60 Dr.A.Clement Ebenezer Henry, Assistant Professor, LPM Livestock Products Technology (Dairy Science) 6. 61 – 71 Dr.G.Rajarajan, Assistant Professor, LPT Livestock Products Technology (Meat Science) 7. 72 – 83 Dr.R.Ilavarasan, Assistant Professor, LPT Veterinary Preventive Medicine 8. 84 – 88 Dr. K. Jayalakshmi, Assistant Professor, VMD Veterinary Anatomy 9. Dr.S.Paramasivam, Professor and Head, VAN and 89 – 131 Dr.S.Sivagnanam, Assistant Professor, VAN Veterinary Biochemistry 10. 132 – 141 Dr.S.Murugavel, Assistant Professor, VPB Veterinary Obstetrics and Gynaecology 11. Dr.V.Prabaharan, Assistant Professor, VOG and 142 – 178 Dr.R.Rajkumar, Assistant Professor, VOG Veterinary Microbiology 12. Dr.B.Puvarajan, Associate Professor, VMC and 179 – 188 Dr.R.Manickam, Assistant Professor, VMC Veterinary Parasitology 13. Dr.A.Latchumikanthan, Assistant Professor, VPA and 189 – 203 Dr.M.K.Vijayasarathy, Assistant Professor, VPA Veterinary Pathology Dr.R.Ravikumar, Assistant Professor, VPP & 14. 204 – 213 Dr.P.C.Prabhu, Assistant Professor, VPP and Dr.K.Thilagavathi, Assistant Professor, VPP Veterinary Pharmacology and Toxicology 15. 214 – 228 Dr.P.Senthilkumar, Assistant Professor, VPT Veterinary Physiology 16. 229 – 238 Dr.P.Visha, Associate Professor and Head, VPB Veterinary Surgery and Radiology Dr.S.Senthil Kumar, Associate Professor and Head, VCC & 17. 239 – 247 Dr.A.Kumaresan, Assistant Professor and Head, VSR & Dr.P.Tamilmahan, Assistant Professor, VSR QUESTION BANK, VCRI, ORATHANADU-614 625 Page 3 QUESTION BANK 2020 ANIMAL GENETICS AND BREEDING 1. All Tamil Nadu cattle breeds are_________ a. Milch breeds b. Draught breeds c. Dual purpose d. None of the above 2. _________ cattle breed is suitable for ploughing in marshy paddy fields a. Bargur b. Umblachery c. Kangayam d. Pullikulam 3. Recently recognized sheep breeds of Tamil Nadu a. Katchaikatty Black b. Chevvadu c. Both a & b d. Vembur 4. Recently recognized Goat breeds of Tamil Nadu a. Trichy Black b. Salem Black c. Chevvadu d. Bargur 5. Recently recognized buffalo breed of Tamil Nadu a. Bargur b. Salem Black c. Todad. Katchaikatty Black 6. _________ cattle breed known for its unsurpassed in speed and endurance in trotting in hilly region a. Bargur b. Umblachery c. Kangayam d. Pullikulam 7. ____________ is the nodal agency for the registration of newly identified germplasm of livestock and poultry. a. ICAR- IVRI b. ICAR- NDRI c. ICAR- NBAGR d.ICAR- CIRC 8. Pea comb is common in which class of poultry a) American b) English c) Asiatic d) Mediterranean 9. Failure to response to selection is called a. Selection limit b. Asymmetry of response c. Selection differential d. Selection intensity 10. The genetic improvement of well known breed can be achieved by _________ a. Selecting breeding b. Grading-up c. Inbreeding d. Line breeding 11. The offspring are better than the mean of both parents is called as ________ a. Positive heterosis b. Negative Heterosis c. Hybrid Vigour d. Both a and c QUESTION BANK, VCRI, ORATHANADU-614 625 Page 4 QUESTION BANK 2020 12. ________ is defined as the average age of the parents when their offspring are born a. Selection differential b. Generation interval c. Selection intensity d. Genetic gain 13. ___________ involves a succession of backcross from one population into another population. a. Cross breeding b. Backcrossing c. Grading-up d. Top crossing 14. In Indian scenario, breeding bulls are selected for genetic improvement of milk production based on a. Progeny testing b. Pedigree selection c. Both a and b d. Individual selection 15. The main concern of captive breeding programme is ________ a. Loss of genetic diversity b. Inbreeding depression c. Poor adaptation to natural environment d. All of the above 16. When one gene masks the expression of another non-allelic gene is known as_________ a. Epistasis b. Dominance-recessive c. Co-dominance d. Incomplete dominance 17. Heritability of production traits is_________________ a. Low b. Medium c. High d. None 18. If gene frequency of A=0.7 & a=0.3, find out genotypic frequency of heterozygote a. 0.42 b. 0.21 c. 0.49 d. 0.09 19. Heterosis in F2 – generation will becomes_____________ a. Half of F1 generation b. No change c. Double of F1 generation d. None 20. Crossing over takes place in____________ phase of cell cycle a. Pachytene stage of prophase-I b. Diplotene stage of prophase-I c. Metaphase of meiosis I d. Metaphase of meiosis II 21. Which force changes the gene frequency fastest_______________ a. Migration b. Genetic drift c. Mutation d. Selection QUESTION BANK, VCRI, ORATHANADU-614 625 Page 5 QUESTION BANK 2020 22. Barred plumage in poultry, broodiness in poultry, rapid feathering & slow feathering in poultry, cryptorchidism in horses and white eye in drosophila are examples of________________ a. Sex-linked inheritance b. Sex-influenced inheritance c. Sex-limited inheritance d. None 23. Auto sexing on the basis of __________________ sex-linked traits of chicken a. Barred plumage b. Fast & slow feathering c. Both a and b d. None 24. Milk yield and draught capacity of cattle has a _____________________ correlation a. Negatively correlation b. Nonsense correlation c. Positively correlation d. None of the above 25. The ratio of selection differential to the phenotypic standard deviation of a trait is known as_______________ a. Intensity of selection b. Response to selection c. Accuracy of selection d. Limit of selection 26. Genes of sex-limited traits are present on______________ a. Sex-chromosomes b. Autosomes c. Both d. None 27. The increasing order of efficiency of methods of selection is a. Tandem selection < Independent culling < Selection index b. Tandem selection < Selection index < Independent culling c. Independent culling < Selection index < Tandem selection d. Independent culling < Tandem selection< Selection index 28. Which is true about individual selection a. Animals are selected on the basis of their own phenotype b. It is most accurate basis of selection and gives direct estimate of breeding value c. Generation interval is shortest among all the basis of selection d. All of the above 29. Individual selection and pedigree selection are more effective when heritability of trait is a. High b. Low c. Medium d. None QUESTION BANK, VCRI, ORATHANADU-614 625 Page 6 QUESTION BANK 2020 30. Progeny testing and family selection are more effective when the trait is a. Sex limited traits b. Low heritable traits c. Carcass traits d. All of the above 31. Most effective aids to selection for improving sex-limited trait is________ a. Progeny testing b. Sib selection c. Family selection d. Individual selection 32. Which of the following is true about repeatability of a trait_________ a. It is used to predict future performance from past records b. It is used to predict MPPA and used in making culling decisions of cows c. It is the upper limit of heritability in broad sense d. All the above 33. The ratio of response to selection to the selection differential is termed as- . a. Regression b. Realized heritability c. Heritability in broad sense d. Heritability in narrow sense 34. The unit of selection in family selection is a. Family mean b. Pedigree information c. Individual mean d. Within family mean 35. Genetic gain per year is depend upon a. Heritability b. Calving interval c. Generation interval d. Repeatability 36. ―Resemblance between relatives‖ is the basis of estimation of a. Heritability b. Repeatability c. Genetic Correlation d. Regression 37. Repeatability is generally estimated by a. Half-sib correlation b. Intra-class correlation c. Regression d. BLUP 38. Heterosis, inbreeding depression and specific combining ability (SCA) are caused by_______________ a. Non-additive gene action (Dominance + Over-dominance + Epistasis) b. Additive gene action c. Both a & b QUESTION BANK, VCRI, ORATHANADU-614 625 Page 7 QUESTION BANK 2020 d. None of the above 39. General combining ability, Complementarity, breeding value & resemblance between relative is due to_______________ a. Non-additive gene action (Dominance + Over-dominance + Epistasis) b. Additive gene action c. Both a & b d. None of the above 40. Reciprocal recurrent selection (RRS) is more suitable for poultry and swine selection programme to improve a. GCA b. SCA c. Both d. None 41. ______________is used for the production of commercial broilers. a. Crossbreeding b. Line crossing c. Strain crossing d. Selective breeding 42. What are the assumptions of Hardy-Weinberg equilibrium- . a. Small population, random mating, absence of mutation, migration & selection b. Large size population, random mating, absence of mutation, migration & selection c. Large size population, random mating, presence of mutation, migration & selection d. None the above 43. Inbreeding coefficient of progenies produced by grandparent – offspring mating, half sib mating & double first cousin mating are a. 0.25 b. 0.50 c. 0.125 d. 0.0625 44. Genetic correlation between traits is due to a. Pleiotropy b. Linkage c. Heterozygosity d. All the above 45. The proportionate contribution of offspring to the next generation is known as a.