Population structure and genealogical analysis of the Brazilian Crioula Horse

Maciel, F.C.; Bértoli, Cláudia Damo; Neto, José Braccini; Cobuci, Jaime Araújo; Paiva, Samuel Rezende; McManus, Concepta

doi:10.1017/s2078633613000489

Cited by 13 publications

(8 citation statements)

References 33 publications

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“…Among animals born in the last 15 years, a greater number of inbred animals were found as well as greater inbreeding average for inbred animals. Such tendency of increasing BH mean inbreeding with time was also illustrated by Figure 3 and has been seen in other horse populations (Maciel et al, 2014). This is expected as later generations have higher pedigree completeness.…”

Section: Resultssupporting

confidence: 80%

“…Brasileiro de Hipismo Ne estimates agree with that described for Creole (Ne= 214.46) by Maciel et al (2014); although the parameter was inferior to Ne described for Hanoverian (Ne=372.34) by Hamann and Distl (2008). Closed herd books tend to present lower values of Ne, as reported by Cervantes et al (2009) for the Arab-derived Spanish breeds (109.5 to 135.5), and by Teegen et al (2009) for the Trakenher breed (144 to 150).…”

Section: Herdsupporting

confidence: 67%

“…Andalusian (Valera et al, 2005), Hanoverian (Hamann and Distl, 2008), and last decade Spanish Arab were reported to have mean equivalent generations of 8.26; 8.43 and 7.9 respectively. Shallower pedigree was found in younger breeds such as SSH (4.29) by Bartolomé et al (2011) and Creole (4.62) by Maciel et al (2014). Horse breeds with small population size and closed studbooks, like Andalusian (mean inbreeding 8%) reported by Valera et al, (2005); Spanish Arab (recent mean inbreeding of 10%) described by ; and Lipizzan (11%) by Zechner et al (2002) were expected to show higher endogamy coefficients.…”

Section: Herdmentioning

confidence: 97%

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Brazilian Sport Horse: Pedigree Analysis of the Brasileiro de Hipismo Breed

Medeiros

Bértoli

Garbade

et al. 2014

Italian Journal of Animal Science

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Brasileiro de Hipismo (BH) represents an open population that permits genetic input from breeds recognised by the World Breeding Federation for Sport Horses. The aim of this study was the genetic characterisation of the population as the first of a series aiming at the consolidating the current selection programme. The Brazilian Association of the Brazilian Sport Horse Breeders provided genealogical data from 1977 to 2011. A data bank containing 34,393 horses was analysed for population genetic parameters including: individual inbreeding (F), effective population size (Ne), effective number of founders (fe), effective number of ancestors (fa), and number of founder genome equivalents (fg). Analysis were run twice: for animals born until 1995 (PREVIOUS) and for those born in the last 15 years (15YEARS). Ne estimated via paired increase in coancestry consisted of 188.59 (±3.24) animals. fe was 466 and 222 for PREVIOUS and 15YEARS, respectively. Ancestors were represented by fa of 274 and 129. Mean F for 15YEARS was 0.6%; 1444 animals were inbred, with mean inbreeding of 3.33%. The difference found in fa and fe parameters, between PREVIOUS and 15YEARS, indicated the loss of original alleles. The increase in contribution from some founders represents the breeder's preference for a few horses, without the negative effect of high inbreeding levels. Brasileiro de Hipismo genetic variability agrees with its large based formation history, and should allow for genetic gain of heritable traits through selection.

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Section: Resultssupporting

confidence: 80%

Section: Herdsupporting

confidence: 67%

Section: Herdmentioning

confidence: 97%

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Brazilian Sport Horse: Pedigree Analysis of the Brasileiro de Hipismo Breed

Medeiros

Bértoli

Garbade

et al. 2014

Italian Journal of Animal Science

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“…The pedigree quality data (EG) showed good values (Table 1), ensuring the accuracy of the present results. Studies in the literature reported smaller numbers of EG for the Mangalarga Marchador and Crioulo breeds of 2.38 (Baena et al, 2020) and 3.51 (Maciel et al, 2014), respectively. On the other hand, a similar number of EG was obtained for purebred Lusitano and Maremmano of 5.7 generations for both breeds (Faria et al, 2018b;Giontella et al, 2019).…”

Section: Animals (Sub)populations Pedigree Quality and Generation Intervalmentioning

confidence: 78%

Pedigree analysis of the racing line Quarter Horse: Genetic diversity and most influential ancestors

et al. 2021

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Locally adapted breeds, except Pantaneira, tend to show lower haplotype diversity than commercial breeds. This may be associated with their history of geographical isolation, such as for Lavradeira and Marajoara, local adaptations to stressful environmental conditions (most locally adapted breeds), or long term breeding strategies, such as with the Crioula, for which a herd book has been maintained for almost 100 years ( Maciel et al , 2014 ).…”

mentioning

confidence: 99%

D-loop haplotype diversity in Brazilian horse breeds

et al. 2017

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The first horses were brought to Brazil by the colonizers after 1534. Over the centuries, these animals evolved and adapted to local environmental conditions usually unsuitable for exotic breeds, thereby originating locally adapted Brazilian breeds. The present work represents the first description of maternal genetic diversity in these horse breeds based on D-loop sequences. A D-Loop HSV-I fragment of 252 bp, from 141 horses belonging to ten Brazilian breeds / genetic groups (locally adapted and specialized breeds) were analysed. Thirty-five different haplotypes belonging to 18 haplogroups were identified with 33 polymorphic sites. Haplotype diversity (varying from 0.20 to 0.96) and nucleotide diversity (varying from 0.0039 to 0.0239) was lower for locally adapted than for specialized breeds, with the same pattern observed for FST values. Haplogroups identified in Brazilian breeds are in agreement with previous findings in South American samples. The low variability observed mainly in locally adapted breeds, indicates that, to ensure conservation of these breeds, careful reproductive management is needed. Additional genetic characterization studies are required to support accurate decision-making.

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Population structure and genealogical analysis of the Brazilian Crioula Horse

Cited by 13 publications

References 33 publications

Brazilian Sport Horse: Pedigree Analysis of the Brasileiro de Hipismo Breed

Brazilian Sport Horse: Pedigree Analysis of the Brasileiro de Hipismo Breed

Pedigree analysis of the racing line Quarter Horse: Genetic diversity and most influential ancestors

D-loop haplotype diversity in Brazilian horse breeds

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