Association of Polymorphisms in the Cryptochrome-1 gene (Turcry1) with Growth and Reproductive Traist in Turkeys, Meleagris Gallopavo

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dc.contributor.author Adikari, A.M.J.B.
dc.contributor.author Xu, J.
dc.contributor.author Smith, E.J.
dc.date.accessioned 2020-07-16T14:10:52Z
dc.date.available 2020-07-16T14:10:52Z
dc.date.issued 2019-08
dc.identifier.citation Sri Lankan Journal of Agriculture and Ecosystems- Volume: 1, Issue: 1, (August, 2019), pp 23-40 en_US
dc.identifier.issn 2673 -1401
dc.identifier.uri http://repository.rjt.ac.lk/handle/123456789/2737
dc.description.abstract Circadian clock genes including Cryptochrome-1 are involved in the molecular mechanism of the biological clock which controls the behavioral, physiological and biochemical circadian rhythms of animals. The turkey Cryptochrome1 (turCry1) gene for DNA sequence variations was screened and evaluated the relationships among haplogroups with the performance traits. DNA sequences of turCry1 (15.0 kb) gene were screened using a total of 290 turkey birds by sequencing of the individual amplicons. In the turCry1 gene, seven SNPs including four and three in the introns 3 and 6 were identified, respectively. The D´ among SNPs ranged from 0.48 to 0.89. The pairwise FST ranged from 0.004 to 0.67 among turkey birds. Haplotypes observed from the 7 SNPs were grouped into seven haplogroups with the frequencies ranging from 0.02 to 0.96, were significantly associated with average daily gain (ADG) for the period of 35 - 68 days, feed conversion ratio (FCR) for the periods of 160 - 231 days and 34 - 231 days, egg production and ejaculate volume (p≤0.05). DNA sequence variations of the turCry1 gene may have some regulatory role in the molecular mechanism of the circadian clock which may affect the overall mechanism of the circadian clock. The turCry1 is a good candidate gene for association studies in turkey. In general, these data support our hypothesis that DNA sequence variations of clock genes at the nucleotide and haplotype levels are associated with the differences in performance traits. In conclusion, the reported genomic information in the present study would be valuable for future genotype-phenotype evaluation studies between turCry1gene and other traits in the turkey using candidate gene approach. en_US
dc.language.iso en_US en_US
dc.publisher Rajarata University of Sri Lanka - Faculty of Agriculture en_US
dc.subject Cryptochrome-1 gene en_US
dc.subject Nucleotide polymorphism en_US
dc.subject Association en_US
dc.subject Growth en_US
dc.subject Reproductive traits en_US
dc.title Association of Polymorphisms in the Cryptochrome-1 gene (Turcry1) with Growth and Reproductive Traist in Turkeys, Meleagris Gallopavo en_US
dc.type Article en_US


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