A microsatellites-based survey on the genetic structure of two Italian local chicken breeds

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Bianchi, MatteoSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för husdjursgenetik (HGEN),Department of Animal Breeding and Genetics (author)

A microsatellites-based survey on the genetic structure of two Italian local chicken breeds

Article/chapterEnglish2011

Publisher, publication year, extent ...

2016-02-18
Informa UK Limited,2011
PAGEpress / PAGEPress Publications,2024

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LIBRIS-ID:oai:slubar.slu.se:46016
https://res.slu.se/id/publ/46016URI
https://doi.org/10.4081/ijas.2011.e39DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

Notes

The biodiversity safeguard is an important goal of poultry production in every developed country. Nowadays, the high chicken meat demand from the world market has been leading to a large spread of strongly producing commercial chicken lines. The creation of these standard types is causing a progressive loss of genetic variability. Ancona and Livorno are two Italian autochthonous chicken breeds which represent a great resource in terms of specific genetic richness. Aim of this study is to investigate the genetic diversity of these breeds as potential valuable genetic variability source. In fact, in spite of their endangered status, these chicken breeds are very appreciated for their ability to adapt themselves to extensive organic rearing systems. Blood samples from 131 individuals were collected and genotyped through a thirty microsatellites-based analysis. All the observed descriptive statistical indexes suggested a heterozygosity deficiency and an inbreeding level (mean observed heterozygosity = 0.46, mean expected heterozygosity = 0.53, F(is) in Ancona and Livorno = 0.251 and 0.086). The tree from inter-individual D(AS) distance using Neighbour-Joining algorithm and the FCA analysis showed a higher internal variability in Livorno than in Ancona. STRUCTURE analysis showed the genetic uniqueness of the breeds and the presence of sub-groups in Ancona originating from a possible genetic isolation. This research could be a suitable starting point to set up improved selection schemes and a potential preliminary genotypic test for all the cocks to be used in the selection.

Subject headings and genre

LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Jordbruksvetenskap hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Agricultural Science hsv//eng
NATURVETENSKAP Biologi Ekologi hsv//swe
NATURAL SCIENCES Biological Sciences Ecology hsv//eng

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Sveriges lantbruksuniversitetInstitutionen för husdjursgenetik (HGEN) (creator_code:org_t)
Sveriges lantbruksuniversitet

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In:Italian Journal of Animal Science: Informa UK Limited10, s. 205-2111594-40771828-051X

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AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agriculture Fore ...; and Agricultural Sci ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Ecology

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By the university: Swedish University of Agricultural Sciences

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