scholarly journals Features of coat color and markings and impact of dun factor on Vyatka horse breed

2020 ◽  
Vol 17 ◽  
pp. 00202
Author(s):  
Natalia F. Belousova ◽  
Svetlana P. Bass ◽  
Svetlana A. Zinoveva ◽  
Sergei A. Kozlov ◽  
Sergei S. Markin
Keyword(s):  
Coat Color ◽  
Horse Breed

The predominant coat colors in Vyatka horse breed are bay-brown (69.6 %) and mousey (20.8 %). Among the genotyped livestock, three genotypes of the base bay coat color (EE/AA, EE/Aa, Ee/AA) and two genotypes of the base solid blackcock (EE/a/a, Ee/aa) have been detected. The proportion of horses with Cr allele is 2.1 %. In Vyatka horse breed, three isabelline-brown horses (Cr/Cr) have been recorded and the presence of W20n allele was detected. Among the horses genotyped, 35.5 % are DD homozygous, 61.3 % are heterozygous (Dd1, Dd2), 3.2 % have the nd2/nd2 genotype. Allele d2 against the background of D does not always cause the presence of “wild” markings, unlike D/D. The influence of Dun-factor on the depigmentation area has not been detected. 39.9 % of horses have white markings (including 30 % of stallions), which are mainly facial markings (59.8 %), less often they are leg markings (21.6 %) or both facial and leg markings (18, 6 %).

scholarly journals Analysis of ROH patterns in the Noriker horse breed reveals signatures of selection for coat color and body size

2019 ◽  
Vol 50 (4) ◽  
pp. 334-346 ◽  
Author(s):  
G. Grilz‐Seger ◽  
T. Druml ◽  
M. Neuditschko ◽  
M. Mesarič ◽  
M. Cotman ◽  
...  
Keyword(s):  
Body Size ◽  
Coat Color ◽  
Horse Breed ◽  
Signatures Of Selection ◽  
Selection For

scholarly journals Coat Color Roan Shows Association with KIT Variants and No Evidence of Lethality in Icelandic Horses

Genes ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 680 ◽  
Author(s):  
Katharina Voß ◽  
Julia Tetens ◽  
Georg Thaller ◽  
Doreen Becker
Keyword(s):  
Sanger Sequencing ◽  
Coat Color ◽  
Dominant Mode ◽  
White Hair ◽  
Causative Mutation ◽  
Horse Breed ◽  
Homozygous Condition ◽  
Kit Gene ◽  
Icelandic Horses ◽  
Descriptive Statistical Analysis

Roan (Rn) horses show a typical seasonal change of color. Their body is covered with colored and white hair. We performed a descriptive statistical analysis of breeding records of Icelandic horses to challenge the hypothesis of roan being lethal in utero under homozygous condition. The roan to non-roan ratio of foals from roan × roan matings revealed homozygous roan Icelandic horses to be viable. Even though roan is known to be inherited in a dominant mode and epistatic to other coat colors, the causative mutation is still unknown. Nevertheless, an association between roan phenotype and the KIT gene was shown for different horse breeds. In the present study, we identified KIT variants by Sanger sequencing, and show that KIT is also associated with roan in the Icelandic horse breed.

scholarly journals Genetic Diversity and Signatures of Selection in a Native Italian Horse Breed Based on SNP Data

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1005 ◽  
Author(s):  
Michela Ablondi ◽  
Christos Dadousis ◽  
Matteo Vasini ◽  
Susanne Eriksson ◽  
Sofia Mikko ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Size ◽  
Coat Color ◽  
Leisure Activities ◽  
Effective Population ◽  
Horse Breed ◽  
Individual Fitness ◽  
Snp Data ◽  
Recent Occurrence ◽  
Genomic Regions

Horses are nowadays mainly used for sport and leisure activities, and several local breeds, traditionally used in agriculture, have been exposed to a dramatic loss in population size and genetic diversity. The loss of genetic diversity negatively impacts individual fitness and reduces the potential long-term survivability of a breed. Recent advances in molecular biology and bioinformatics have allowed researchers to explore biodiversity one step further. This study aimed to evaluate the loss of genetic variability and identify genomic regions under selection pressure in the Bardigiano breed based on GGP Equine70k SNP data. The effective population size based on Linkage Disequilibrium (Ne) was equal to 39 horses, and it showed a decline over time. The average inbreeding based on runs of homozygosity (ROH) was equal to 0.17 (SD = 0.03). The majority of the ROH were relatively short (91% were ≤2 Mbp long), highlighting the occurrence of older inbreeding, rather than a more recent occurrence. A total of eight ROH islands, shared among more than 70% of the Bardigiano horses, were found. Four of them mapped to known quantitative trait loci related to morphological traits (e.g., body size and coat color) and disease susceptibility. This study provided the first genome-wide scan of genetic diversity and selection signatures in an Italian native horse breed.

P4069 Genetic differences in a Colombian Paso horse breed by gait selection

2016 ◽  
Vol 94 (suppl_4) ◽  
pp. 113-114 ◽  
Author(s):  
M. A. Novoa ◽  
L. F. García
Keyword(s):  
Genetic Differences ◽  
Horse Breed

The Inheritance of Coat Color in Horses

1913 ◽  
Vol 47 (562) ◽  
pp. 615-624
Author(s):  
W. S. Anderson
Keyword(s):  
Coat Color

scholarly journals Genetic Mapping and Identification of the Candidate Gene for White Seed Coat in Cucurbita maxima

2021 ◽  
Vol 22 (6) ◽  
pp. 2972
Author(s):  
Yuzi Shi ◽  
Meng Zhang ◽  
Qin Shu ◽  
Wei Ma ◽  
Tingzhen Sun ◽  
...  
Keyword(s):  
Seed Coat ◽  
Molecular Breeding ◽  
Coat Color ◽  
Recessive Gene ◽  
Myb Transcription Factor ◽  
Cucurbita Maxima ◽  
Seed Coat Color ◽  
Rna Seq ◽  
Edible Seed ◽  
Segregating Population

Seed coat color is an important agronomic trait of edible seed pumpkin in Cucurbita maxima. In this study, the development pattern of seed coat was detected in yellow and white seed coat accessions Wuminglv and Agol. Genetic analysis suggested that a single recessive gene white seed coat (wsc) is involved in seed coat color regulation in Cucurbita maxima. An F2 segregating population including 2798 plants was used for fine mapping and a candidate region containing nine genes was identified. Analysis of 54 inbred accessions revealed four main Insertion/Deletion sites in the promoter of CmaCh15G005270 encoding an MYB transcription factor were co-segregated with the phenotype of seed coat color. RNA-seq analysis and qRT-PCR revealed that some genes involved in phenylpropanoid/flavonoid metabolism pathway displayed remarkable distinction in Wuminglv and Agol during the seed coat development. The flanking InDel marker S1548 was developed to predict the seed coat color in the MAS breeding with an accuracy of 100%. The results may provide valuable information for further studies in seed coat color formation and structure development in Cucurbitaceae crops and help the molecular breeding of Cucurbita maxima.

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