Advertisement

Proceedings: Animal Sciences

, Volume 88, Issue 5, pp 311–323 | Cite as

Inbreeding in white tigers

  • A K Roychoudhury
  • K S Sankhala
Article

Abstract

One of the problems of breeding of endangered species in captivity is inbreeding. An exemplary illustration is the inbreeding in the white tigers of Rewa. Genealogies and other relevant information on white tigers were collected from four Zoological Parks to investigate whether matings between close relatives were responsible for the reduction in litter size and increase in early mortality which has been observed. Inbreeding coefficients were calculated for different types of mating. It was generally found that tigers failed to survive, if their inbreeding coefficient attained a level of 0·4687 or higher. Regression analysis reveals a tendency for the average litter size to decrease and the early mortality rate to increase with an increase in the value of the inbreeding coefficient.

Keywords

Genealogy inbreeding coefficient linear regression litter size mortality rate white tigers 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Johansson I and Rendel J 1968Genetics and Animal Breeding (London: Oliver and Boyd)Google Scholar
  2. Kudo A 1962 A method for calculating the inbreeding coefficient;Am. J. Hum. 14 426–432Google Scholar
  3. Thornton I W B, Yeung K K and Sankhala K S 1967 The genetics of white tigers in Rewa;J. Zool. 152 127–135CrossRefGoogle Scholar
  4. Wright S 1922 The effects of inbreeding and crossbreeding on guinea pigs. I. Decline in vigor. II. Differentiation among inbred families;U.S.D.A. Bull. 1090 p. 65Google Scholar
  5. Wright S 1951 The genetical structure of populations;Ann. Eugen. 15 323–354Google Scholar

Copyright information

© Indian Academy of Sciences 1979

Authors and Affiliations

  • A K Roychoudhury
    • 1
  • K S Sankhala
    • 2
  1. 1.Bose InstituteCalcutta
  2. 2.Department of AgricultureGovernment of IndiaNew Delhi

Personalised recommendations