Vincenzo Piccolo,Ramon Grimalt,Julia Nowowiejska et al.
Vincenzo Piccolo et al.
Relationship between the left-right asymmetric motor-related conformation and the orientation of facial hair whorls in Japanese Kiso horses [0.03%]
日本纪州马左利手性与面部毛旋方向的关系研究
Sawa Onouchi,Tomoki Yoshida,Shouichiro Saito et al.
Sawa Onouchi et al.
We examined the relationship between inherited motor-related conformation and orientation of facial hair whorls in Japanese Kiso horses. Eleven horses were divided into clockwise, counterclockwise, and radial groups according to facial hair whorls....Therefore, the orientation of facial hair whorls may suggest the tendency of motor-related conformation, at least in counterclockwise group.
Heritability estimates of the position and number of facial hair whorls in Thoroughbred horses [0.03%]
赛马面部毛旋位置和数量的遗传力估计
Tamu Yokomori,Teruaki Tozaki,Hiroshi Mita et al.
Tamu Yokomori et al.
Objective: According to oral traditions of horse caretakers and trainers, the differences in the position and number of facial hair whorls may be associated with temperamental traits....Elucidating genetic background of facial hair whorls and its relationship to temperamental traits may promote more efficient breeding and maintenance of racehorses....In this study, we estimated heritabilities of the position and number of facial hair whorls in Japanese Thoroughbred horses....Results: The number of facial hair whorls varied from one to four and heritability estimate in 4024 Thoroughbred horses was low (h2= 0.160). The positions of facial hair whorls were categorized into high, medium, and low, based on their locations....These results indicated that a larger proportion of the variation in the studied population was due to genetic factors for facial hair whorls position.
Facial hair whorls (trichoglyphs) and the incidence of motor laterality in the horse [0.03%]
马的面部毛发漩涡和运动侧偏的发生率
Jack Murphy,Sean Arkins
Jack Murphy
We investigated the relationship between the hair flow of single facial hair whorls and the incidence of lateralised motor bias in 219 horses when under saddle in ridden work.
Phenotypic relationships between hair whorl characteristics and spermatozoal attributes in Holstein bulls [0.03%]
荷斯坦公牛头发卷特征与精子属性表型关系的研究
R D Evans,T Grandin,J M DeJarnette et al.
R D Evans et al.
Bulls had 1 (n = 454), 2 (n = 21) or no facial hair whorls (n = 5). Some 39% of bulls had whorls in the middle of their forehead, whereas 43% had whorls very low down on their forehead. Spiral whorls were present on 77% of bulls while 22% had elongated whorls.
A note on hair whorl position and cattle temperament in the auction ring [0.03%]
关于牛拍卖圈中的毛旋位置和牛的脾气的一点说明
J L. Lanier,T Grandin,R Green et al.
J L. Lanier et al.
The objective of this study was to further describe the relationships between facial hair whorls and temperament in cattle. Cattle (n=1636) from six commercial cattle auctions in Colorado and Texas were observed.