Pedigree analysis of the endangered Old Kladruber horse population

Vostrá-Vydrová, Hana; Vostrý, L.; Hofmanová, B.; Krupa, E.; Zavadilová, Ludmila

doi:10.1016/j.livsci.2016.01.001

Cited by 37 publications

(43 citation statements)

References 29 publications

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“…The Food and Agriculture Organization (FAO) stated that the value of Δ F should not exceed 1% to avoid substantial loss of genetic material over time (Sherf, ); unfortunately, this limit is not respected in the Bardigiano breed. In endangered horse populations, we found similar ∆Fs: In the French Boulonnais draught horse population, Δ F was equal to 1.38%, and in the Old Kladruber horse population, Δ F was equal to 1% (Verrier et al., ; Vostrá‐Vydrová et al., ). Although the Bardigiano is not included in the list of endangered breeds yet, it currently shows a critical increase in the inbreeding in the last generations.…”

Section: Discussionmentioning

confidence: 56%

“…Similarly, the Bardigiano population size is smaller than international breeds; as an example, the number of Bardigiano horses is roughly half of the current Lusitano population (Vicente et al., ). The number of breeding animals in the Bardigiano breed and in the endangered Old Kladruber horse population is very close: 742 and 612, respectively (Vostrá‐Vydrová et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Demographic and genetic parameters, based on population structure by origin and based on founders and ancestors' contributions, have also been used to monitor the changes in a population over a short period of time (Boichard, Maignel, & Verrier, 1997). These principles have been applied to characterize the genetic diversity in several horse breeds, including both sport and isolated breeds (Bussiman et al, 2018;Duru, 2017;Giontella, Pieramati, Silvestrelli, & Sarti, 2018;Hamann & Distl, 2008;Hasler et al, 2011;Kjöllerström, Gama, & Oom, 2015;Onogi, Shirai, & Amano, 2017;Schurink, Arts, & Ducro, 2012;Vicente, Carolino, & Gama, 2012;Vostrá-Vydrová, Vostrý, Hofmanová, Krupa, & Zavadilová, 2016;Vostry, Vostra-Vydrova, Hofmanova, Vesela, & Majzlik, 2015). Those estimates can be in turn used to optimize breeding strategies to avoid loss of genetic diversity and enhance breeding programmes.…”

Section: Introductionmentioning

confidence: 99%

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Exploring genetic diversity in an Italian horse native breed to develop strategies for preservation and management

Ablondi

Vasini

Beretti

et al. 2018

J Animal Breeding Genetics

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Genetic diversity is a key factor for both adaptation and response to selection. The loss of genetic diversity causes a decrease in individual fitness, and it has a dramatically negative effect on population lifespan in the long term. This study aimed at exploring the genetic diversity at pedigree level of the Bardigiano horse breed, which is a native breed from Italy shaped for living in rural areas. In 1977, the Bardigiano studbook was founded to preserve the breed and for improving its use for riding and draft purposes. Pedigree data contained 9,469 horses, of which 3,416 were alive. Demographic and genetic parameters were estimated on subpopulations to evaluate potential genetic diversity differences among breeding and nonbreeding animals, and animals showing different breeding values (EBVs) for an index combining 18 conformation traits. Throughout the studied period, inbreeding steadily increased, reaching in the last birth year cohort a mean value equal to 0.10. The rate of inbreeding per generation, assuming a mean generation interval of 8.74 years, was equal to 1.64%. Moreover, significant differences on both average relatedness and inbreeding among horses with high and low EBVs were shown. Our study unravelled the state of genetic diversity in the Bardigiano breed, highlighting that breeding strategies for optimizing the contribution of breeding animals in the coming generations are needed to ensure long-term survival of the Bardigiano horse breed.

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Section: Discussionmentioning

confidence: 56%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploring genetic diversity in an Italian horse native breed to develop strategies for preservation and management

Ablondi

Vasini

Beretti

et al. 2018

J Animal Breeding Genetics

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show abstract

“…comm.). This might be a consequence of pedigree, as Squires (2013) reported the poorest quality in the Friesian, Andalusian, and Saddlebreds; moreover, quite high inbreeding depression in this breed (Vostra-Vydrova et al 2016) might negatively interfere with reproduction (Roldan et al 2006) Even though the cryopreservation process was introduced many years ago, the possibility of increasing effectiveness has been studied intensively across species since that time (Muchlisin et al 2015;Zhang et al 2015). Although our knowledge and techniques for freezing stallion ejaculate have improved within the last 20 years, a considerable proportion of stallions are still not suitable for semen freezing (Katila 2001).…”

mentioning

confidence: 97%

“…This breed, with unique characteristics and high cultural and historical value (Vostra-Vydrova et al 2016), is an important gene resource of the Czech Republic and the population has been fully closed since 2002 (Hofmanova et al 2015). Since the population of this gene resource breed is small, preservation of breeding material (i.e.…”

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confidence: 99%

Effect of two freezing extenders on characteristic of fresh and frozen-thawed semen in endangered Old Kladruber stallions - A pilot study

Šichtař¹,

Nehasilová²,

Šimoník³

et al. 2017

CZECH J ANIM SCI

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ABSTRACTŠichtař J., Nehasilová A., Šimoník O., Bubeníčková F. (2017): Effect of two freezing extenders on characteristic of fresh and frozen-thawed semen in endangered Old Kladruber stallions -A pilot study. Czech J. Anim. Sci., 62, 227−233.The aim of the study was to evaluate the effect of two different extenders on sperm characteristic before equilibration and post-thaw in the endangered Old Kladruber stallions. Also, the response of individual stallions to the extenders used was tested. Semen was collected from six stallions every other day within one week. After centrifugation of the collected sperm-rich fraction, the supernatant was removed and sperm pellets were divided to two aliquots; these were diluted either with Gent (Minitube, Germany) or privately manufactured lactose-EDTA-egg yolk extender (Lact). Three cryopreserved insemination doses (IDs) from each extender (Gent and Lact) were prepared for each stallion from one collection (108 samples from six stallions in total). As a parameter of quality, the motility (computer assisted sperm analysis), viability (fluorescence staining), and morphology (eosin/nigrosine staining) were evaluated after dilution with freezing extenders (fresh) and after thawing (frozen-thawed). The different effects of chosen extenders on the quality of fresh semen were only manifested in higher kinematic parameters of sperm when the Lact extender was used. However, in frozen-thawed samples, the Gent extender yielded significantly better results in all of the evaluated parameters. The representation of sperm subpopulation was significantly influenced by extender in fresh as well as frozen-thawed samples; moreover, we found a significant effect of freezing on the distribution of these subpopulations. The response of individual stallions to chosen extenders was evident in the different quality of fresh as well as frozen-thawed IDs; Gent extender yielded better frozen-thawed IDs. Based on our results, among others describing quality parameters of ejaculate in endangered Old Kladruber stallions, we can recommend using Gent extender for the production of frozen-thawed IDs.

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Population structure and genetic diversity of Polish Arabian horses based on pedigree data

Klecel,

Kloch,

Wojciechowska

et al. 2024

animal

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Pedigree analysis of the endangered Old Kladruber horse population

Cited by 37 publications

References 29 publications

Exploring genetic diversity in an Italian horse native breed to develop strategies for preservation and management

Exploring genetic diversity in an Italian horse native breed to develop strategies for preservation and management

Effect of two freezing extenders on characteristic of fresh and frozen-thawed semen in endangered Old Kladruber stallions - A pilot study

Population structure and genetic diversity of Polish Arabian horses based on pedigree data

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