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. 2015 Feb;8(2):183-6.
doi: 10.14202/vetworld.2015.183-186. Epub 2015 Feb 16.

Chromosomal profile of indigenous pig (Sus scrofa)

P Guru Vishnu  1 , B Punyakumari  1 , B Ekambaram  1 , M Gnana Prakash  1 , B V Subramanyam  1
Affiliations

Chromosomal profile of indigenous pig (Sus scrofa)

P Guru Vishnu et al. Vet World. 2015 Feb.

Abstract

Aim: The objective of this study was to investigate the chromosomal profile of indigenous pigs by computing morphometric measurements.

Materials and methods: A cytogenetic study was carried out in 60 indigenous pigs to analyze the chromosomal profile by employing the short term peripheral blood lymphocyte culture technique.

Results: The modal chromosome number (2n) in indigenous pigs was found to be 38 and a fundamental number of 64 as in the exotic. 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 mean relative length, arm ratio, centromeric indices and morphological indices of chromosomes varied from 1.99±0.01 to 11.23±0.09, 1.04±0.05 to 2.95±0.02, 0.51±0.14 to 0.75±0.09 and 2.08±0.07 to 8.08±0.15%, respectively in indigenous pigs. Sex had no significant effect (p>0.05) on all the morphometric measurements studied.

Conclusion: The present study revealed that among autosomes first five pairs were sub metacentric, next two pairs were sub telocentric (6-7), subsequent five pairs were metacentric (8-12) and remaining six pairs were telocentric (13-18), while both allosomes were metacentric. The chromosomal number, morphology and various morphometric measurements of the chromosomes of the indigenous pigs were almost similar to those established breeds reported in the literature.

Keywords: chromosomal profile; idiogram; indigenous pigs; morphometric measurements.

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Figures

Figure-1
Figure-1
Giemsa stained metaphase spread of indigenous Boar (2n = 38, XY)
Figure-2
Figure-2
Giemsa stained Karyotype of indigenous Boar (2n = 38, XY)
Figure-3
Figure-3
Idiogram showing relative length (%) of chromosomes of indigenous pig
See this image and copyright information in PMC

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