Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

  • Print ISSN 0367-6722

  • Online ISSN 0976-0555

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In-depth Pedigree Analysis and Inbreeding Effect on Reproduction Traits in Sahiwal Nucleus Herd 

Shabahat Mumtaz, Anupama Mukherjee, Prajwalita Pathak, Kaiser Parveen
Background: Loss of genetic diversity is allied with adverse incidents such as inbreeding depression in fitness related traits, addiction of favorable alleles and enhances fluctuation on selection response. Therefore, the study aims to monitor population structure and avoid unfavorable effects of inbreeding for sustainable improvement in breeding programme.
Methods: Pedigree information on 3449 animals born from 1955-2018 was analyzed. The effect on inbreeding on Age at first calving (AFC), Service period (SP), Daughter pregnancy rate (DPR), Calving interval (CI) and pregnancy rate was seen by regression analysis.
Result: The pedigree completeness index (PCI) were found to be (%) 92.32, 80.26, 65.22, 49.43% and 32.54 respectively from first to fifth generations. The estimated average inbreeding rate was 2.30% and average genetic diversity loss was 2.64%. Study also revealed significant effect of inbreeding on (AFC, CI and SP) with slightly increasing trends. Hence, it is suggested that more precise pedigree recording and planned mating strategies should be adopted to avoid negative effect of inbreeding in future generation. 
  1. Ballou, J.D., Lacy, R.C. (1995). Identifying genetically important individuals for management of genetic variation in pedigreed populations. In: Population Management for Survival and Recovery. [Ballou, J. D., Gilpin, M., Foose, T.J. (ed)]. Columbia University Press, New York, NY. Columbia University Press, New York, pp76-111.
  2. Caballero, A., Toro. M.A. (2000). Interrelations between effective population size and other tools for management of conserved populations. Genetics Research. 75: 331-343. 
  3. Cervantes, I., Goyache, F., Molina, A., Valera, M., Gutierrez, J.P. (2011). Estimation of effective population size from the rate of coancestry in pedigreed populations. Journal of Animal Breeding Genetics. 28: 56-63.
  4. FAO. (1992). Monitoring animal genetic resources and criteria for prioritization of breeds. The Management of Global Animal Genetic Resources: Proceedings of an FAO Expert Consultation, no. 104. J. Hodges, ed. FAO, Rome, Italy.
  5. FAO. (1998). Secondary Guidelines for Development of National Farm Animal Genetic Resources Management Plans: Animal Recording for Medium Input Production Environment. Food and Agriculture Organization of the United Nations (FAO), Rome. 
  6. Faria, F.J.C., Fihlo, A.E.V., Madalena, F.E., Josahkian, L.A. (2009). Pedigree analysis in the Brazilian Zebu breeds. Journal of Animal Breeding Genetics. 126: 148-153.
  7. Gonzalez-Recio, O., Lopez de Maturana, E., Gutierrez, J.P. (2007). Inbreeding depression on female fertility and calving ease in Spanish dairy cattle. Journal of Dairy Science. 90: 5744-5752.
  8. Goyache, F., Gutierrez, J.P., Fernandez, I., Gomez, E., AlvArez, I., Díez, J. Royo, L.J. (2003). Using pedigree information to monitor genetic variability of endangered populations: the Xalda sheep breed of Asturias as an example. Journal of Animal Breeding Genetics. 120: 95-105.
  9. Gutiérrez, J.P. Goyache, F. (2005). A note on ENDOG: a computer program for analysing pedigree information. Journal of Animal Breeding Genetics. 122: 172-176. 
  10. Gutiérrez, J.P., Cervantes, I., Goyache, F. (2009). Improving the estimation of realised effective population sizes in farm animals. Journal of Animal Breeding and Genetics. 126: 327-332.
  11. Gutierrez, J.P., Cervantes, I., Molina, A., Valera, M., Goyache, F. (2008). Individual increase in inbreeding allows estimating realised effective sizes from pedigrees. Genetic Selection Evolution. 40: 359-378.
  12. Henderson, C.R. (1976). A Simple Method for Computing the Inverse of a Numerator Relationship Matrix Used in Prediction of Breeding Values. Biometrics. 32(1): 69-83. 
  13. Kamiti, D., Ilatsia, E., Bett, R., Kahil, A. (2016). Population structure and demographic trends of the registered Sahiwal cattle in Kenya. Tropical Animal health and Production. 48: 1029-1036. 
  14. Lacy, R.C. (1989). Analysis of founder representations in pedigrees: founder equivalents and founder genome equivalents. Zoo Biology. 8: 111-23. 
  15. Lacy, R.C. (1995). Clarification of genetic terms and their use in the management of captive populations. Zoo Biology. 14: 565-578. 
  16. MacCluer, J.W., Boyce, A.J., Dyke, B., Weitkamp, L.R., Pfennig, D.W., Parsons, C.J. (1983). Inbreeding and pedigree structure in standardbred horses. Journal of Hereditary. 7: 394–399. 
  17. Muasya, T.K., Kariuki, J.N., Muia, J.M.K. (2011). Population structure of the Sahiwal breed in Kenya. Livestock Research for Rural Development, 23 (9): 1-10. 
  18. Parveen, K. (2016). Performance trends of economic traits in Sahiwal cattle. Ph.D. Thesis. ICAR-National Dairy Research Institute, Deemed University, Karnal, India. 
  19. Rege, J.E.O., Wakhungu, J.W. (1992). An evaluation of a long-term breeding programme in a closed Sahiwal herd in Kenya. I. Genetic and phenotypic trends and levels of inbreeding. Journal of Animal Breeding Genetics. 109: 374-384.
  20. Santana Jr, M.L., Pereira, R.J., Bignardi, A.B., Faro, L.E., Tonhati, H., Albuquerque, L.G. (2014). History, structure, and genetic diversity of Brazilian Gir cattle. Livest Sci., 163: 26-33.
  21. Silva, M.H.M.A., Malhado, C.H.M., Costa Jr, J.L., Cobuci, J.A., Costa, C.N. Carneiro, P. L. S. (2016). Population genetic structure in the Holstein breed in Brazil. Tropical Animal health and Production. 48: 331-336.
  22. Weigel, K.A. (2001). Controlling inbreeding in modern breeding programmes. Journal of Dairy Science. 84: E177-E184. 

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