Olympica Sarma¹* and Preetinder Singh²

¹ Former M.V.Sc Student, Department of Animal Genetics and Breeding, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
² Former M.V.Sc Student, Department of Veterinary Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India

*Corresponding Author: Olympica Sarma, Former M.V.Sc Student, Department of Animal Genetics and Breeding, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India.

Received: December 27, 2021; Published: January 31, 2022

Abstract

QTL is a site present on the chromosome at which a gene or group of genes affecting a quantitative trait is located. Techniques like backcross and intercross are used to detect genetic markers. Variation in quantitative trait is correlated with these markers. Moreover, quantification of each locus can be done and amount of variation in the trait can be noted. Specific areas can be target using this information and this knowledge can be used in future for understanding the genome and QTL present in it. However, the genes should be identified in a particular region and their function should be known. Detailed genomic mapping should be done to fully utilized the ability of QTL identification. With the help of QTL mapping, we can detect the variation of a trait in a given population. Moreover, we can know how much environmental factors play role in variation of a trait. Different type of polymorphic genetic markers is used in QTL mapping and certain techniques involving these markers makes it easier for identification of QTL. This QTL technique will further help in increasing the trait of interest in a population and decreasing the undesirable traits in a population. In future it can help in increasing the trait and profit related to that trait.

Keywords: QTL; Traits; Chromosome; Gene; Markers

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Citation

Citation: Olympica Sarma and Preetinder Singh. “Quantitative Trait Loci (Qtl) in Livestock and Poultry: A Review". Acta Scientific Veterinary Sciences 4.2 (2022): 115-123.

Copyright

Copyright: © 2022 Olympica Sarma and Preetinder Singh. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.