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STR-based genetic appraisal in two distinct chicken breeds with contrasting-breeding regimen

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Title STR-based genetic appraisal in two distinct chicken breeds with contrasting-breeding regimen
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Creator Pratap S.O., Mishra S.K., Prasad Y.1, Khan A.A.*, Arora G., Singh D.P., Mishra A.K.
 
Subject Chicken, diversity, Kadaknath, microsatellites, selection, WLH
 
Description Not Available
The present study was conducted to evaluate intra and inter-breed genetic variation between two diverse chicken populations: Kadaknath (KN) and White Leghorn (WLH) at molecular level, using fifteen polymorphic microsatellites markers, representing different chromosomal regions of chicken genome. These breeds possess contrasting breeding histories through their propagation for 30 generations at CARI, India, where in, the former remained under ex-situ conservation and the latter underwent long-term selection for high egg production. Molecular analysis revealed distinctly-different population parameters for genetic diversity i.e. PIC, Na, Ne, Nei's index, Ho, He and Shannon's index (I), showing significantly-higher values for KN as opposed to WLH, while the WLH recorded higher Fstatistics (FIS, FST and FIT) estimates than those of KN. Intra-breed variability assessed through un-rooted dendrograms generated for these populations via neighbor-joining algorithm exhibited distinctly-different dispersal patterns by higher inter-sample divergence in KN compared to WLH. It was inferred that variability of WLH apparently eroded over generations due to operational evolutionary-force (selection) while KN appeared to retain more heterozygosity consistent to its breeding history.
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Date 2018-12-31T04:55:28Z
2018-12-31T04:55:28Z
2013-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/16327
 
Language English
 
Relation Not Available;
 
Publisher Indian Journal of Poultry Science