Phenotypic variability and population structure analysis of Tanzanian free-range local chickens

dc.contributor.author Mushi, James
dc.contributor.author Chiwanga, Gaspar
dc.contributor.author Lamont, Susan
dc.contributor.author Amuzu-Aweh, Esinam
dc.contributor.author Walugembe, Muhammed
dc.contributor.author Max, Robert
dc.contributor.author Lamont, Susan
dc.contributor.author Kelly, Terra
dc.contributor.author Mollel, Esther
dc.contributor.author Msoffe, Peter
dc.contributor.author Dekkers, Jack
dc.contributor.author Gallardo, Rodrigo
dc.contributor.author Zhou, Huaijun
dc.contributor.author Muhairwa, Amandus
dc.contributor.department Animal Science
dc.date 2020-10-07T02:47:27.000
dc.date.accessioned 2021-02-24T21:11:54Z
dc.date.available 2021-02-24T21:11:54Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.issued 2020-09-29
dc.description.abstract <p><strong>Background</strong> Free-range local chickens (FRLC) farming is an important activity in Tanzania, however, they have not been well-characterized. This study aimed to phenotypically characterize three Tanzanian FRLCs and to determine their population structure. A total of 389 mature breeder chickens (324 females and 65 males) from three popular Tanzanian FRLC ecotypes (Kuchi, Morogoro-medium and Ching’wekwe) were used for the phenotypic characterization. Progenies of these chickens were utilized to assess population structure. The ecotypes were collected from four geographical zones across Tanzania: Lake, Central, Northern and Coastal zones. Body weights and linear measurements were obtained from the mature breeders, including body, neck, shanks, wingspan, chest girth, and shank girth. Descriptive statistics were utilized to characterize the chickens. Correlations between the linear measurements and differences among the means of measured linear traits between ecotypes and between sexes were assessed. A total of 1399 progeny chicks were genotyped using a chicken 600 K high density single nucleotide polymorphism (SNP) panel for determination of population structure.</p> <p><strong>Results</strong> The means for most traits were significantly higher in Kuchi relative to Ching’wekwe and Morogoro-medium. However, shank length and shank girth were similar between Kuchi and Morogoro-medium females. All traits were correlated with the exception of shank girth in Morogoro-medium. Admixture analyses revealed that Morogoro-medium and Ching’wekwe clustered together as one population, separate from Kuchi.</p> <p><strong>Conclusions</strong> Phenotypic traits could be used to characterize FRLCs, however, there were variations in traits among individuals within ecotypes; therefore, complementary genomic methods should be considered to improve the characterization for selective breeding.</p>
dc.description.comments <p>This article is published as Mushi, James R., Gaspar H. Chiwanga, Esinam N. Amuzu-Aweh, Muhammed Walugembe, Robert A. Max, Susan J. Lamont, Terra R. Kelly, Esther L. Mollel, Peter L. Msoffe, Jack Dekkers, Rodrigo Gallardo, Huaijun Zhou, and Amandus P. Muhairwa. "Phenotypic variability and population structure analysis of Tanzanian free-range local chickens." <em>BMC Veterinary Research</em> 16 (2020): 360. DOI: <a href="https://doi.org/10.1186/s12917-020-02541-x" target="_blank">10.1186/s12917-020-02541-x</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ans_pubs/590/
dc.identifier.articleid 1583
dc.identifier.contextkey 19682810
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ans_pubs/590
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/93345
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ans_pubs/590/2020_LamontSusan_PhenotypicVariability.pdf|||Sat Jan 15 01:03:43 UTC 2022
dc.source.uri 10.1186/s12917-020-02541-x
dc.subject.disciplines Agriculture
dc.subject.disciplines Animal Sciences
dc.subject.disciplines Genetics
dc.subject.disciplines Poultry or Avian Science
dc.subject.keywords Free-range local chickens
dc.subject.keywords Phenotypic diversity
dc.subject.keywords Genetic diversity
dc.subject.keywords Population structure
dc.title Phenotypic variability and population structure analysis of Tanzanian free-range local chickens
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 5dee3d24-aa7a-4fe1-abf6-f0bb615bfe24
relation.isOrgUnitOfPublication 85ecce08-311a-441b-9c4d-ee2a3569506f
File
Original bundle
Now showing 1 - 1 of 1
Name:
2020_LamontSusan_PhenotypicVariability.pdf
Size:
2.09 MB
Format:
Adobe Portable Document Format
Description:
Collections