DOI: 10.5958/j.0976-0555.48.1.001    | Article Id: B-2474 | Page : 1-5
Citation :- CYTOGENETIC STUDIES IN CROSSBRED PIGS.Indian Journal Of Animal Research.2014.(48):1-5
P. Guruvishnu*, B. Punyakumari, B. Ekambaram and K. Sarjan Rao
Address : Department of Animal Genetics and Breeding, Sri Venkateswara Veterinary University, Tirupati - 517 502, India


Karyological investigation pertaining to 30 crossbred pigs (both sexes) maintained at AICRP, Tirupati was undertaken in order to study the chromosomal profile of the crossbred pigs and their morphometric measurements. The  cells  had  the  usual  diploid  complement  of  38  chromosomes (2n = 38)  and a fundamental number of  64  as  in  the  exotic pigs with XY complement in males and XX complement in females. The karyotype of crossbred pig was characterized by 5 pairs of submetacentric chromosomes (1-5), next two pairs were sub telocentric (6-7), subsequent 5 pairs were metacentric (8-12) and remaining six pairs were telocentric (13-18). A detailed idiogram was constructed from the results obtained. First chromosome was the longest pair and thirteenth pair was the second largest, while Y-chromosome was the smallest in the karyotype of the pig. The X chromosome was metacentric, but not readily distinguishable from the autosome pair number 9, while Y chromosome was metacentric.


Chromosomal profile Crossbred pig Fundamental number Idiogram Morphometric measurements.


  1. Apparao, K .B. C., Bhat, P. P. and Bhat, P. N. (1993). Chromosome banding patterns of Indian domestic pig. Indian J. Anim. Sci. 63:849-856.
  2. BAHS (Basic Animal Husbandry Statistics). (2012). Department of Animal Husbandry, Dairying and Fisheries, Ministry of Agriculture, Government of India. 14th Aug. 2012. 
  3. Kanadkhedkar, H. L., Nehete, S. B., Suryawanshi, A. R., Umrikar, U. D. (2006).Chromosomal study of desi pig. J. Bombay Vet. Coll. 14:78-79.
  4. Lin, C.C., Biederman, B.M., Jamro, H.K., Hawthorne, A.B. and Church, R.B. (1980). Porcine (Sus scrofa domestica) chromosome identification and suggested nomenclature. Can.J.Genet.Cytol. 22:103-116.
  5. Moorehead, P.S., Nowell, P.C., Mellman, W.J., Batthips, D.M. and Hungerford, D.A. (1960).Chromosome preparation of leucocytes cultured from human peripheral blood. Exp. Cell Res. 20:613-616.
  6. Nanthadevi, P. (2004). Chromosomal profile of domestic pigs (Sus scrofa). M.V.Sc.thesis submitted to the Tamilnadu Agricultural University, Chennai.
  7. Oluwole, O.O. and Omitogun, O.G. (2009). Cytogenetic characterization of Nigerian Indigenous Pig. Afr. J. Biotechnol. 8:4696-4701.
  8. Palegar, M.S., Govindaiah, M.G., Nagaraja, C.S. and Jayashankar, M.R. (1995). Chromosome studies on exotic and local non-descriptive pigs. Indian J. Anim. Sci. 65:799-800.
  9. Snedecor, G.W. and Cochran, W.G. (1989). Statistical Methods 8th edition. Iowa State University Press, Ames USA.
  10. Tanomtong, A., Supanuam, P., Siripiyasing, P. and Bunjonrat, R. (2007). A comparative chromosome analysis of Thai wild boar (Sus scrofa jubatus) and relationship to domestic pig (Sus scrofa domestica) by conventional staining, G-banding and high-resolution technique. J. Sci.Technol. 29:1-13.
  11. Vijh, R.K., Sahai, R. and Sharma, A. (1990). Chromosomal profile of Indian domestic pig. Indian J. Anim. Sci. 60:1373 – 1376.
  12. Ziolkowska, A. and Bogdzinska, M. (2008). Chromosomal polymorphism in the Polish Landrace and polish large white swine breeds. J. Cent. Eur. Agric. 9:677-682.

Global Footprints