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Ben Sassi-Zaidy Y, Mohamed-Brahmi A, Nouairia G, Charfi-Cheikhrouha F, Djemali M, Cassandro M. Genetic Variability and Population Structure of the Tunisian Sicilo-Sarde Dairy Sheep Breed Inferred from Microsatellites Analysis. Genes (Basel) 2022; 13:304. [PMID: 35205349 PMCID: PMC8872596 DOI: 10.3390/genes13020304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/28/2022] [Accepted: 02/01/2022] [Indexed: 12/10/2022] Open
Abstract
This study analyzed the genetic variability, inbreeding and population structure of the Tunisian-North African dairy sheep breed, the Sicilo-Sarde (SS), created by crossing the Sarda and Comisana dairy breeds. The level of variability in the SS, considered as an endangered breed after a dramatic decrease, was assessed using 17 microsatellite markers by analyzing the two breed populations sampled from their respective cradles: SS of Beja (SSB, n = 27) and SS of Mateur (SSM, n = 25). High levels of genetic diversity in SS were revealed, with a total of 212 alleles, a high mean number of alleles (12.47 ± 4.17) and a high average polymorphism information content (PIC) (0.81 ± 0.10). The observed heterozygosity was considerable in SSB and SSM (0.795 and 0.785, respectively). The inbreeding level measured by the population inbreeding coefficient FIS is higher in the SSM population (0.121) than in the SSB population (0.090). The higher genetic diversity level detected in SSB reflected the effect of new Italian Sarda genes introduced by intra-uterine artificial insemination recently practiced in this population. The Wilcoxon test and the mode-shift distribution indicated that the SS breed is a non-bottlenecked population. The structural analysis reflected the historical miscegenation practiced during the breed creation and highlighted further ancient miscegenation, which could date back to the first waves of sheep introduction to the western Mediterranean region. Microsatellite markers were successfully applied in the assessment of the genetic variability of SS and should be used in monitoring this variability during the application of conservation strategies.
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Affiliation(s)
- Yousra Ben Sassi-Zaidy
- Laboratory of Diversity, Management and Conservation of Biological Systems, LR18ES06, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar II Tunis 2092, Tunisia;
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy;
- Laboratory of Animal Genetic and Feed Resources Research, Department of Animal Science, Institut National Agronomique de Tunis, University of Carthage, Tunis-Mahrajène Tunis 1082, Tunisia;
| | - Aziza Mohamed-Brahmi
- Laboratory of Agricultural Production Systems Sustainability in the North Western Region of Tunisia, Department of Animal Production, Ecole Supérieure d’Agriculture du Kef Boulifa, University of Jendouba, Le Kef 7119, Tunisia;
| | - Ghada Nouairia
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy;
- Department of Biochemistry and Biophysics, Stockholm University, SE-10691 Stockholm, Sweden
| | - Faouzia Charfi-Cheikhrouha
- Laboratory of Diversity, Management and Conservation of Biological Systems, LR18ES06, Faculty of Sciences of Tunis, University of Tunis El Manar, El Manar II Tunis 2092, Tunisia;
| | - M’Naouer Djemali
- Laboratory of Animal Genetic and Feed Resources Research, Department of Animal Science, Institut National Agronomique de Tunis, University of Carthage, Tunis-Mahrajène Tunis 1082, Tunisia;
| | - Martino Cassandro
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy;
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Peixoto MGCD, Carvalho MRS, Egito AA, Steinberg RS, Bruneli FÂT, Machado MA, Santos FC, Rosse IC, Fonseca PAS. Genetic Diversity and Population Genetic Structure of a Guzerá ( Bos indicus) Meta-Population. Animals (Basel) 2021; 11:1125. [PMID: 33919992 PMCID: PMC8071051 DOI: 10.3390/ani11041125] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/25/2021] [Accepted: 04/02/2021] [Indexed: 11/16/2022] Open
Abstract
The Brazilian Guzerá population originated from a few founders introduced from India. These animals adapted well to the harsh environments in Brazil, were selected for beef, milk, or dual-purpose (beef and milk), and were extensively used to produce crossbred animals. Here, the impact of these historical events with regard to the population structure and genetic diversity in a Guzerá meta-population was evaluated. DNA samples of 744 animals (one dairy, nine dual-purpose, and five beef herds) were genotyped for 21 microsatellite loci. Ho, He, PIC, Fis, Fit, and Fst estimates were obtained considering either farms or lineages as subpopulations. Mean Ho (0.73) and PIC (0.75) suggest that genetic diversity was efficiently conserved. Fit, Fis and Fst values (95% CI) pointed to a low fixation index, and large genetic diversity: Fit (Farms = 0.021-0.100; lineages = 0.021-0.100), Fis (Farms = -0.007-0.076; lineages = -0.014-0.070), and Fst (Farms = 0.0237-0.032; lineages = 0.029-0.038). The dual-purpose herds/selection lines are the most uniform subpopulation, while the beef one preserved larger amounts of genetic diversity among herds. In addition, the dairy herd showed to be genetically distant from other herds. Taken together, these results suggest that this Guzerá meta-population has high genetic diversity, a low degree of population subdivision, and a low inbreeding level.
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Affiliation(s)
| | - Maria Raquel S. Carvalho
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (M.R.S.C.); (R.S.S.); (F.C.S.); (I.C.R.); (P.A.S.F.)
| | | | - Raphael S. Steinberg
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (M.R.S.C.); (R.S.S.); (F.C.S.); (I.C.R.); (P.A.S.F.)
| | | | | | - Fernanda C. Santos
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (M.R.S.C.); (R.S.S.); (F.C.S.); (I.C.R.); (P.A.S.F.)
- Centre for Addiction and Mental Health (CAMH), Campbell Family Mental Health Research Institute, Toronto, ON M5T 1R8, Canada
| | - Izinara C. Rosse
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (M.R.S.C.); (R.S.S.); (F.C.S.); (I.C.R.); (P.A.S.F.)
- Departamento de Farmácia, Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto 35400-000, Brazil
| | - Pablo Augusto S. Fonseca
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil; (M.R.S.C.); (R.S.S.); (F.C.S.); (I.C.R.); (P.A.S.F.)
- Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
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Niero G, Koczura M, De Marchi M, Currò S, Kreuzer M, Turille G, Berard J. Are cheese-making properties of dual purpose cattle impaired by highland grazing? A case study using Aosta Red Pied cows. ITALIAN JOURNAL OF ANIMAL SCIENCE 2018. [DOI: 10.1080/1828051x.2018.1443289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Giovanni Niero
- Dipartimento di Agronomia Animali Alimenti Risorse Naturali e Ambiente (DAFNAE), Università degli Studi di Padova, Legnaro, Province of Padua, Italy
| | - Madeline Koczura
- ETH Zurich, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Massimo De Marchi
- Dipartimento di Agronomia Animali Alimenti Risorse Naturali e Ambiente (DAFNAE), Università degli Studi di Padova, Legnaro, Province of Padua, Italy
| | - Sarah Currò
- Dipartimento di Agronomia Animali Alimenti Risorse Naturali e Ambiente (DAFNAE), Università degli Studi di Padova, Legnaro, Province of Padua, Italy
| | - Michael Kreuzer
- ETH Zurich, Institute of Agricultural Sciences, Zurich, Switzerland
| | | | - Joel Berard
- ETH Zurich, Institute of Agricultural Sciences, Zurich, Switzerland
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Niero G, Visentin G, Ton S, De Marchi M, Penasa M, Cassandro M. Phenotypic characterisation of milk technological traits, protein fractions, and major mineral and fatty acid composition of Burlina cattle breed*. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.1080/1828051x.2016.1250128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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