Studies of blood groups and protein polymorphisms in the Brazilian horse breeds Mangalarga Marchador and Mangalarga (Equus caballus)

Lippi, Andréia Samaha; Mortari, Norma

doi:10.1590/s1415-47572003000400005

Cited by 9 publications

(9 citation statements)

References 13 publications

(7 reference statements)

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“…The F ST , in our case, ranged from 2.6 to 8.5 % with an average of 5.5 % (0.4). These levels for the F ST in Tunisian horse breeds are smaller than those previously found in Algerian breeds (F ST = 8.6 %, Berber et al, 2014), Polish breeds (F ST = 10 %, Zabek et al, 2005), Brazilian breeds (F ST = 11.7 %; Lippi and Mortari, 2003). However, they are slightly lower than the 6.5 % reported by Behl et al (2007) for five Indian horse breeds.…”

Section: Genetic Diversity Within and Among Breedscontrasting

confidence: 50%

Genetic diversity in Tunisian horse breeds

et al. 2017

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Abstract. This study aimed at screening genetic diversity and differentiation in four horse breeds raised in Tunisia, the Barb, Arab-Barb, Arabian, and English Thoroughbred breeds. A total of 200 blood samples (50 for each breed) were collected from the jugular veins of animals, and genomic DNA was extracted. The analysis of the genetic structure was carried out using a panel of 16 microsatellite loci. Results showed that all studied microsatellite markers were highly polymorphic in all breeds. Overall, a total of 147 alleles were detected using the 16 microsatellite loci. The average number of alleles per locus was 7.52 (0.49), 7.35 (0.54), 6.3 (0.44), and 6 (0.38) for the Arab-Barb, Barb, Arabian, and English Thoroughbred breeds, respectively. The observed heterozygosities ranged from 0.63 (0.03) in the English Thoroughbred to 0.72 in the Arab-Barb breeds, whereas the expected heterozygosities were between 0.68 (0.02) in the English Thoroughbred and 0.73 in the Barb breeds. All F ST values calculated by pairwise breed combinations were significantly different from zero (p < 0.05) and an important genetic differentiation among breeds was revealed. Genetic distances, the factorial correspondence, and principal coordinate analyses showed that the important amount of genetic variation was within population. These results may facilitate conservation programs for the studied breeds and enhance preserve their genetic diversity.

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Section: Genetic Diversity Within and Among Breedscontrasting

confidence: 50%

Genetic diversity in Tunisian horse breeds

et al. 2017

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“…However, our F ST value was slightly smaller than that found in some other studies, such as the 10% reported by Zabek et al (2005) for some Polish breeds (Bilgoraj, Malopolski and Thoroughbreds), the 10.9% reported by Díaz et al, (2002) for the Argentine Creole and Thoroughbreds and the 11.7% reported by Lippi and Mortari (2003) for two Brazilian breeds (Mangalarga Marchador and Mangalarga). It has been pointed out by some authors that the typical high within-population variability of microsatellites may result in low differentiation values (Hedrick, 1999;Balloux and Lugon-Moulin, 2002).…”

Section: Discussioncontrasting

confidence: 82%

Genetic characterization of the Spanish Trotter horse breed using microsatellite markers

et al. 2007

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To assist in selection schemes we carried out the first genetic characterization of the Spanish Trotter horse (Trotador Español). We used 16 microsatellite markers to genotype 40 unrelated Spanish trotters, 25 native Balearic horses (11 Menorquina and 14 Mallorquina horses) and 32 Andalusian horses. The observed heterozygosity for the Spanish Trotters was 0.647 ± 0.037 and the expected heterozygosity was 0.696 ± 0.026 while the average number of alleles per locus was 6.0 ± 0.341, these values being similar to the data published for other horse breeds. We also tried to establish the importance of the Mallorquina and Menorquina breeds in the present Spanish Trotter population. Only 9% of the total genetic variability could be attributed to differences between breeds (mean F ST = 0.09 ± 0.010). Recent migration rates were confirmed the low recent genetic relationship between the Balearic breeds and Spanish Trotters, indicating that the genetic background of the present Spanish Trotter population is not based on the native Balearic horse population.

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“…The genetic differentiation value (F ST ) was higher than that observed in four Basque-Navarrese semi-feral breeds (Solis et al, 2005) and lower than those obtained in European (Zabek et al, 2005;Azor et al, 2007) and South American breeds (Lippi and Mortari, 2003). On average, a deficit of heterozygotes of 2.3% (F IS ) exists for each analysed breed; this deficit was 8.3% in the whole sample (F IT ) ( Table 1).…”

Section: Discussionmentioning

confidence: 68%

Genetic diversity and admixture analysis of Sanfratellano and three other Italian horse breeds assessed by microsatellite markers

Zuccaro

Bordonaro

Criscione

et al. 2008

Animal

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Sanfratellano is a native Sicilian horse breed, mainly reared in the north east of the Island, developed in the 19th century from local dams and sires with a restricted introgression of Oriental, African and, more recently, Maremmano stallions. In this study, the genetic relationships and admixture among Sanfratellano, the other two Sicilian autochthonous breeds and Maremmano breed were assessed using a set of microsatellites. The main goals were to infer the impact of Maremmano breed in the current Sanfratellano horse and to provide genetic information useful to improve the selection strategies of the Sanfratellano horse. The whole sample included 384 horses (238 Sanfratellano, 50 Sicilian Oriental Purebred, 30 Sicilian Indigenous and 66 Maremmano), chosen avoiding closely related animals. A total of 111 alleles from 11 microsatellite loci were detected, from four at HTG7 to 15 at ASB2 locus. The mean number of alleles was the lowest in Oriental Purebred (6.7), the highest in Sanfratellano (8.3). All the breeds showed a high level of gene diversity (He) ranging from 0.71 ± 0.04 in Sicilian Oriental Purebred to 0.81 ± 0.02 in Sicilian Indigenous. The genetic differentiation index was low; only about 6% of the diversity was found among breeds. Nei’s standards (DS) and Reynolds’ (DR) genetic distances reproduced the same population ranking. Individual genetic distances and admixture analysis revealed that: (a) nowadays Maremmano breed does not significantly influence the current Sanfratellano breed; (b) within Sanfratellano breed, it is possible to distinguish two well-defined groups with different proportions of Indigenous blood.

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Studies of blood groups and protein polymorphisms in the Brazilian horse breeds Mangalarga Marchador and Mangalarga (Equus caballus)

Cited by 9 publications

References 13 publications

Genetic diversity in Tunisian horse breeds

Genetic diversity in Tunisian horse breeds

Genetic characterization of the Spanish Trotter horse breed using microsatellite markers

Genetic diversity and admixture analysis of Sanfratellano and three other Italian horse breeds assessed by microsatellite markers

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