Phenotypic and genetic characterization of indigenous Tswana goats

dc.contributor.authorMonau, Phetogo Ineeleng
dc.contributor.authorVisser, Carina
dc.contributor.authorNsoso, S.J.
dc.contributor.authorVan Marle-Koster, Este
dc.contributor.emaileste.vanmarle-koster@up.ac.zaen_ZA
dc.date.accessioned2019-07-10T06:46:42Z
dc.date.available2019-07-10T06:46:42Z
dc.date.issued2018-11-20
dc.description.abstractTswana goats that were kept in communal systems in three agro-ecological regions in Botswana were characterized according to phenotypic measurements and genotypic data. Objective measurements for 123 goats included bodyweight (BW), body length (BL), heart girth (HG), height at withers (HW), and tail length (TL), while qualitative traits included coat colour and presence or absence of horns and beards. Age was estimated based on dentition. Hair samples were collected from 48 of the phenotyped animals in the largest region (central region) and genotyped with the Illumina Goat50K SNP chip. Mixed coat colour was predominant and across regions 95% of the goats were horned and bearded. Goats in the northwest region had the lowest BW and significantly higher HG values in all age groups compared with other regions. Goats over four years old in the central and northwest regions were significantly longer in body compared with the ones from the southern region. The average expected heterozygosity and inbreeding coefficient were 0.423 ± 0.03 and 0.009 ± 0.05, respectively. Principal component analysis clustered most animals, with a few outliers. The effective population size has decreased over time and at 13 generations ago was estimated at 266. There were high genetic and phenotypic variations in the indigenous Tswana goats, which should be exploited to increase performance through within-breed selection and structured crossbreeding.en_ZA
dc.description.departmentAnimal and Wildlife Sciencesen_ZA
dc.description.librarianam2019en_ZA
dc.description.sponsorshipBotswana University of Agriculture and Natural resources (BUAN) and Organisation of Women in Science for the Developing World (OSWD).en_ZA
dc.description.urihttps://www.sasas.co.za/resources/sa-journal-animal-scienceen_ZA
dc.identifier.citationMonau, P.I., Visser, C., Nsoso, S.J. et al. 2018, 'Phenotypic and genetic characterization of indigenous Tswana goats', South African Journal of Animal Science, vol. 48, no. 5, pp. 925-934.en_ZA
dc.identifier.issn0375-1589 (print)
dc.identifier.issn2221-4062 (online)
dc.identifier.other10.4314/sajas.v48i5.12
dc.identifier.urihttp://hdl.handle.net/2263/70649
dc.language.isoenen_ZA
dc.publisherSouth African Society for Animal Scienceen_ZA
dc.rightsCopyright resides with the authors in terms of the Creative Commons Attribution 4.0 South African Licence.en_ZA
dc.subjectBotswanaen_ZA
dc.subjectGenomic diversityen_ZA
dc.subjectMorphometricen_ZA
dc.subjectPopulation sizeen_ZA
dc.subjectSingle nucleotide polymorphism (SNP)en_ZA
dc.subjectTswana goatsen_ZA
dc.titlePhenotypic and genetic characterization of indigenous Tswana goatsen_ZA
dc.typeArticleen_ZA

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