A Morphometric Survey among Three Iranian Horse Breeds with Multivariate Analysis

Hosseini, Morteza; Shahrbabak, Hossein Moradi; Maryam, Mohammad Bagher Zandi Baghche; Fallahi, Mohammad Hossein

doi:10.5398/medpet.2016.39.3.155

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…This breed contributed to the development of English Thoroughbred (Wallner et al, 2017). They are strong and rideable horses with a long back (Yousefi Mashouf et al, 2020) and small muscles (Naghavian et al, 2018) and are used for racing, show‐jumping, and endurance competitions in Iran (Ghezelsoflou et al, 2018; Hosseini et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Population structure and genomic footprints of selection in five major Iranian horse breeds

et al. 2022

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The genetic structure and characteristics of Iranian native breeds are yet to be comprehensibly investigated and studied. Therefore, we employed genomic information of 364 Iranian native horses representing the Asil (n = 109), Caspian (n = 40), Dareshuri (n = 44), Kurdish (n = 95), and Turkoman (n = 76) breeds to reveal the genetic structure and characteristics. For these and 19 other horse breeds, principal component analysis, Bayesian model-based, Neighbor-Net, and bootstrap-based TreeMix approaches were applied to investigate and compare their genetic structure. Additionally, three haplotype-based methods including haplotype homozygosity pooled, integrated haplotype score, and number of segregating sites by length were applied to trace genomic footprints of selection of Asil, Caspian, Dareshuri, Kurdish, and Turkoman groups. Then, the Mahalanobis distance based on the negative-log 10 rankbased P-values was estimated based on the haplotype homozygosity pooled, integrated haplotype score, and number of segregating sites by length values. Asil, Caspian, Dareshuri, Kurdish, and Turkoman can be categorized into five different genetic clusters. Based on the top 1% of Mahalanobis distance based on the negative-log 10 rank-based P-values of SNPs, we identified 24 SNPs formerly reported to be associated with different traits and >100 genes undergoing selection pressures in Asil, Caspian, Dareshuri, Kurdish, and Turkoman. The detected QTL undergoing selection pressures were associated with withers height, equine metabolic syndrome, overall body size, insect bite hypersensitivity, guttural pouch tympany, white markings, Rhodococcus equi infection, jumping test score, alternate gaits, and body weight traits. Our findings will aid to have a better perspective of the genetic characteristics and population structure of Asil, Caspian, Dareshuri, Kurdish, and Turkoman horses as Iranian native horse breeds.

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Section: Introductionmentioning

confidence: 99%

Population structure and genomic footprints of selection in five major Iranian horse breeds

et al. 2022

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“…An increase in chest girth followed by increased body weight would simultaneously increase uterus volume to support an increase in the number and size of the litter, which in this study is specifically different at each farm because of geographical differences. The same statement was expressed by Hosseini et al (2016) that the differences in morphology and differences between Turkoman, Kurdish and Caspian horses showed adaptation to different environments through phenotypic characterization and body biometric in 23 traits.…”

Section: Linear Body Parameters and Litter Sizementioning

confidence: 82%

The Prediction of Prolificacy Using Linear Body Parameters and Craniometric Analysis in Etawah-Grade Does

Mulyono

Sumantri

Noor

et al. 2018

Trop. Anim. Sci. J.

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Etawah-grade goat is a graded up line between Kacang and Etawah goats, which well adapted to Indonesia's humid tropical climate. In order to fulfill national meat requirement, it is necessary to increase the population by increasing prolificacy. This study was aimed to determine whether the body and head measurements of the Etawah-grade does can be used as selection criteria for indirect selection of the litter size. The use of does at 3-4 years old (I 3 dental condition) from BPTU-HPT Pelaihari and Cordero farms (51 and 55 does, respectively) were based on their specific geographical location characteristics. The body variables were withers height, hip height, body length, chest width, chest depth, thurl width, rump length, chest girth, and cannon circumference, whereas for head variables were acrocranion-prosthion, basion-prosthion, lower jaw length, head height, tuber facial left-right, nasion-rhinion, entorbitale left-right, euryon left-right, supraorbitale left-right. Bergmann methods were applied for measuring the differences of body and head parameters followed by the principal component, Fisher's discriminant, and principal component regression analyzes. All regression coefficients of linear body measurementss were highly correlated to the litter size (P<0.01), with the equation was Y= 0.015X 1b + 0.011X 2b + 0.025X 3b-0.002X 4b + 0.022X 5b + 0.010X 6b + 0.022X 7b + 0.030X 8b + 0.026X 9b. The chest girth was the most elastic body size measurement to the litter size. The increasing of 1 cm of doe's chest girth would result in the increase of litter size, each of 0.0545 and 0.0417 heads born-1 at BPTU-HPT Pelaihari and Cordero farms. Differences in head size and head shape due to the morphometric adaptations cannot be used to predict litter size.

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“…Komosa and Purzyc (2009) evaluated Konik and Hucul horses in Poland and found that six components were necessary to explain 66% of the total variability, represented by 25 metric traits. On the other hand, Hosseini et al (2016) evaluated three Iranian horse breeds (Turkoman, Caspian and Kurdish) and found that two components were necessary to explain at least 70% of the total variance.…”

Section: Discussionmentioning

confidence: 99%

Análise de componentes principais de medidas morfométricas de equinos da raça Pônei Brasileiro

et al. 2020

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O Pônei Brasileiro é uma raça recente que iniciou o registro dos animais a partir do ano de 1970, e vem sendo selecionada continuamente principalmente na sua morfologia para aperfeiçoamento e padronização racial. O objetivo do estudo foi avaliar através da análise componentes principais medidas morfométricas de garanhões e éguas pôneis da raça Pônei Brasileiro para identificar as que mais contribuem para a explicação da variância total em cada sexo. Foram tomadas 14 medidas lineares de um total de 281 animais adultos e foram realizadas a análise descritiva, análise de variância, correlações e análise de componentes principais. As medidas morfométricas dos animais apresentaram grande variação nos dois sexos. As correlações entre as variáveis foram positivas e, em geral, de alta magnitude. Para os garanhões foram necessários apenas dois componentes e para as fêmeas foram necessários apenas três componentes para explicar pelo menos 80% da variação total. Após metodologia para descarte de variáveis foram identificadas as variáveis largura da cabeça, comprimento do pescoço e altura do tórax como as medidas que explicam a maior parte da variação dos animais da raça Pônei Brasileiro e devem ser utilizadas para seleção e controle racial.

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A Morphometric Survey among Three Iranian Horse Breeds with Multivariate Analysis

Cited by 8 publications

References 8 publications

Population structure and genomic footprints of selection in five major Iranian horse breeds

Population structure and genomic footprints of selection in five major Iranian horse breeds

The Prediction of Prolificacy Using Linear Body Parameters and Craniometric Analysis in Etawah-Grade Does

Análise de componentes principais de medidas morfométricas de equinos da raça Pônei Brasileiro

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