Historical Changes and Description of the Current Hungarian Hucul Horse Population

Posta, József; Somogyvári, Enikő; Mihok, Steve

doi:10.3390/ani10071242

Cited by 9 publications

(15 citation statements)

References 34 publications

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“…The inbreeding-based effective population sizes of Furioso-North Star and Gidran horses were higher than those estimated for various colors of the Hispano-Arabian horses, while only the estimated value for Nonius was smaller than the value reported for grey Hispano-Arabian horses [ 16 ]. Our numbers were higher than what was reported in previous studies for Holstein [ 42 ], Hungarian Hucul [ 45 ], and Maremanno [ 35 ] horses. The genetic diversity was the lowest for the Nonius breed based on the Ne_f, and Furioso-North Star was the least endangered breed.…”

Section: Discussioncontrasting

confidence: 89%

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Pedigree-Based Description of Three Traditional Hungarian Horse Breeds

Klein

Oláh

Mihok

et al. 2022

Animals

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The Mezőhegyes Stud was founded in 1784 where three different horse breeds were developed: the Furioso-North Star, the Gidran, and the Nonius. These breeds were based on the same mare population, but each breed had different utilization purposes. Our aim was to analyze the pedigree information of these three indigenous breeds. The genealogical information was traced back from the actual breeding population back to the founder animals, and the final database contained more than 47,000 horses. The reference populations were defined as the registered breeding animals in 2019. The complete generation equivalent was 16.45 for the Gidran breed, 15.18 for Furioso-North Star, and 12.64 for Nonius, respectively. Due to the utilization of English Thoroughbred during the breeding history, the average maximum generations were close to 36 generations for each breed. The average relatedness was approximately 4%. The average Wright’s inbreeding coefficient was the highest for the Nonius breed (5.59%). Kalinowski’s decomposition of inbreeding showed that inbreeding is originated mainly from the past; the current fixation of alleles was higher for the Nonius horse breed. There was a reasonable bottleneck effect for each breed. The estimated effective population sizes suggest that there is no problem with the maintaining of Mezőhegyes horse breeds.

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Section: Discussioncontrasting

confidence: 89%

“…The probability that an allele has been homozygous in previous generations was near 30% for the Nonius breed and above 30% for Furioso-North Star and Gidran breeds. These values were higher than it was estimated for the Hungarian Hucul population [ 45 ] and for the Holsein breed [ 42 ].…”

Section: Discussioncontrasting

confidence: 67%

Pedigree-Based Description of Three Traditional Hungarian Horse Breeds

Klein

Oláh

Mihok

et al. 2022

Animals

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“…Recently, many studies have been focused on the loss of biodiversity [ 23 , 24 , 25 ] or the increase in deleterious genotypes [ 26 ] caused by such inbreeding (as reviewed in [ 7 ]). In the last 200 years, the inbreeding practice led to the phenotypical expression at homozygous sites of deleterious variants [ 27 ], as highlighted when the coefficients are calculated in order to evaluate the genetic diversity among different horse breeds [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 ,…”

Section: Introductionmentioning

confidence: 99%

Unlocking Horse Y Chromosome Diversity

Cardinali

Giontella

Tommasi

et al. 2022

Genes

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The present equine genetic variation mirrors the deep influence of intensive breeding programs during the last 200 years. Here, we provide a comprehensive current state of knowledge on the trends and prospects on the variation in the equine male-specific region of the Y chromosome (MSY), which was assembled for the first time in 2018. In comparison with the other 12 mammalian species, horses are now the most represented, with 56 documented MSY genes. However, in contrast to the high variability in mitochondrial DNA observed in many horse breeds from different geographic areas, modern horse populations demonstrate extremely low genetic Y-chromosome diversity. The selective pressures employed by breeders using pedigree data (which are not always error-free) as a predictive tool represent the main cause of this lack of variation in the Y-chromosome. Nevertheless, the detailed phylogenies obtained by recent fine-scaled Y-chromosomal genotyping in many horse breeds worldwide have contributed to addressing the genealogical, forensic, and population questions leading to the reappraisal of the Y-chromosome as a powerful genetic marker to avoid the loss of biodiversity as a result of selective breeding practices, and to better understand the historical development of horse breeds.

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“…The high inbreeding level results from the fact that it is a closed population under conservation of genetic resources, this being a typical situation for populations housed in zoological gardens [ 41 ]. Posta et al [ 42 ] estimated the inbreeding level of another primitive breed, Hucul horses, to be currently around 7.5%. Szwaczkowski et al [ 5 ] assessed the average inbreeding coefficient at 9.3% for the total population of Polish Konik horses.…”

Section: Resultsmentioning

confidence: 99%

Some Genetic and Environmental Effects on Equine Asthma in Polish Konik Horses

Borowska

Wolska

Niedźwiedź

et al. 2021

Animals

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Current knowledge of the genetic and environmental backgrounds of equine asthma seems to be insufficient, especially for primitive horse breeds. The main objectives of this study were to estimate the effects of sex, birth period, stud, parentage line and inbreeding on asthma morbidity in Polish Konik horses. Records of 274 horses (housed in two studs) were analysed. These animals were allocated to maternal and paternal lines. Individual inbreeding coefficients were extracted from the additive relationship matrix. Horses underwent diagnosis based on observation of the basic symptoms (high frequency of coughing and excessive nasal discharge). Subsequently, some horses (28 individuals) were clinically examined to confirm the earlier observations. Generally, no significant effects of parentage line on heaves morbidity were identified by the use of logistic regression, although the Pearson’s chi-squared test had shown that individuals of some maternal and paternal lines had a predisposition to severe equine asthma. It was concluded that the individual inbreeding level is not associated with the incidence of EA, but a significant effect of the maternal inbreeding coefficient may be observed. It was also found that there is some variability in the incidence of this disease between studs.

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Historical Changes and Description of the Current Hungarian Hucul Horse Population

Cited by 9 publications

References 34 publications

Pedigree-Based Description of Three Traditional Hungarian Horse Breeds

Pedigree-Based Description of Three Traditional Hungarian Horse Breeds

Unlocking Horse Y Chromosome Diversity

Some Genetic and Environmental Effects on Equine Asthma in Polish Konik Horses

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