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Research
(Published online:
16-02-2015)
9.
Chromosomal profile of indigenous pig (Sus scrofa) -
P. Guru Vishnu, B. Punyakumari, B. Ekambaram,
M. Gnana Prakash and B. V. Subramanyam
Veterinary World, 8(2): 183-186
doi:
10.14202/vetworld.2015.183-186
P. Guru
Vishnu:
Department of Animal Genetics and Breeding, Sri Venkateswara
Veterinary University, Tirupati, Andhra Pradesh, India;
vishnugenetics@gmail.com
B.
Punyakumari:
Department of Animal Genetics and Breeding, Sri Venkateswara
Veterinary University, Tirupati, Andhra Pradesh, India;
punya67@yahoo.co.in
B.
Ekambaram:
Department of Animal Genetics and Breeding, Sri Venkateswara
Veterinary University, Tirupati, Andhra Pradesh, India;
dr_ekambaram@rediffmail.com
M.
Gnana Prakash:
Department of Animal Genetics and Breeding, Sri Venkateswara
Veterinary University, Tirupati, Andhra Pradesh, India;
manthanigp@yahoo.com
B. V.
Subramanyam: Department of Animal Genetics and Breeding, Sri
Venkateswara Veterinary University, Tirupati, Andhra Pradesh,
India;
manyamboddu@gmail.com
Received:
11-10-2014, Revised:
05-01-2015, Accepted:
11-01-2015, Published online:
16-02-2015
Corresponding author:
P.
Guru Vishnu, e-mail: vishnugenetics@gmail.com
Citation:
Guruvishnu P,
Punyakumari B, Ekambaram B, Prakash MG, Subramanyam BV (2015)
Chromosomal profile of indigenous pig (Sus scrofa),
Veterinary World, 8(2) 183-186.
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, indigenous
pigs, idiogram, morphometric measurements.
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