Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

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Indian Journal of Animal Research, volume 48 issue 6 (december 2014) : 532-536

CYTOGENETIC CHARACTERIZATION OF VIZIANAGARAM SHEEP+

I. Satish Kumar, B. Punya Kumari*, M. Gnana Prakash, J. Suresh
1Department of Animal Genetics and Breeding, Sri Venkateswara Veterinary University, Tirupati -517 502, India
Cite article:- Kumar Satish I., Kumari* Punya B., Prakash Gnana M., Suresh J. (2024). CYTOGENETIC CHARACTERIZATION OF VIZIANAGARAM SHEEP+. Indian Journal of Animal Research. 48(6): 532-536. doi: 10.5958/0976-0555.2014.00026.0.
Cytogenetic studies were conducted on a total of 60 Vizianagaram sheep maintained at the Livestock Research Station, Garividi and sheep managed by farmers in and around Srikakulam District of Andhra Pradesh. Short term lymphocyte culture technique was adopted. The diploid chromosome number was found to be 54 (2n = 54, XY). The first three pairs of the autosomes were submetacentric and the remaining 23 pairs of autosomes were acrocentric. The X chromosome was the longest acrocentric, while the Y- chromosome was the smallest biarmed. The mean relative length for the autosomes ranged from 1.54 ± 0.04 to 9.59 ± 0.12 per cent, While the mean relative length of X and Y chromosomes were 5.06 ± 0.02 and 1.81 ± 0.17, percent respectively. The mean arm ratios, centromeric indices and morphological indices varied from 1.31 ± 0.07 to 1.24 ± 0.07, 0.545 ± 0.04 to 0.565 ± 0.07 and 7.59 ± 0.01 to 5.36 ± 0.01, respectively.
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