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Wallner, B.; Palmieri, N.; Vogl, C.; Rigler, D.; Bozlak, E.; Druml, T.; Jagannathan, V.; Leeb, T.; Fries, R.; Tetens, J.; Thaller, G.; Metzger, J.; Distl, O.; Lindgren, G.; Rubin, C.-J.; Andersson, L.; Schaefer, R.; McCue, M.; Neuditschko, M.; Rieder, S.; Schlötterer, C.; Brem, G. |
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Title |
Y Chromosome Uncovers the Recent Oriental Origin of Modern Stallions |
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Journal Article |
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Year |
2017 |
Publication |
Current Biology |
Abbreviated Journal |
Current Biology |
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Volume |
27 |
Issue |
13 |
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2029-2035.e5 |
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The Y chromosome directly reflects male genealogies, but the extremely low Y chromosome sequence diversity in horses has prevented the reconstruction of stallion genealogies [1, 2]. Here, we resolve the first Y chromosome genealogy of modern horses by screening 1.46 Mb of the male-specific region of the Y chromosome (MSY) in 52 horses from 21 breeds. Based on highly accurate pedigree data, we estimated the de novo mutation rate of the horse MSY and showed that various modern horse Y chromosome lineages split much later than the domestication of the species. Apart from few private northern European haplotypes, all modern horse breeds clustered together in a roughly 700-year-old haplogroup that was transmitted to Europe by the import of Oriental stallions. The Oriental horse group consisted of two major subclades: the Original Arabian lineage and the Turkoman horse lineage. We show that the English Thoroughbred MSY was derived from the Turkoman lineage and that English Thoroughbred sires are largely responsible for the predominance of this haplotype in modern horses. |
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Elsevier |
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0960-9822 |
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doi: 10.1016/j.cub.2017.05.086 |
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Equine Behaviour @ team @ |
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6669 |
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Author |
Meriggi, A.; Dagradi, V.; Dondina, O.; Perversi, M.; Milanesi, P.; Lombardini, M.; Raviglione, S.; Repossi, A. |
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Title |
Short-term responses of wolf feeding habits to changes of wild and domestic ungulate abundance in Northern Italy |
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Journal Article |
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Year |
2014 |
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Ethology Ecology & Evolution |
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Ethology Ecology & Evolution |
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27 |
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4 |
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389-411 |
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Taylor & Francis |
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0394-9370 |
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doi: 10.1080/03949370.2014.986768 |
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Equine Behaviour @ team @ |
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6688 |
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Author |
Steinhoff-Wagner, J. |
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Title |
Coat Clipping of Horses: A Survey |
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Journal Article |
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Year |
2019 |
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Journal of Applied Animal Welfare Science |
Abbreviated Journal |
Journal of Applied Animal Welfare Science |
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22 |
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2 |
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171-187 |
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Equine, thermoregulation, shaving, winter pelage removal |
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Coat clipping is a common practice in sport horses; however, timing, purpose, technique, and clips vary widely, as do the management and feeding of a clipped horse. The aim of this study was to collect data regarding common clipping practices. A questionnaire was published online in Germany and contained 32 questions. Four hundred ninety-eight people answered at least one question, and 373 individuals (7% male, 93% female; ages 14–59 years) completed all the questions. Clipped horses were predominantly used as sport horses (68%), and they were either clipped immediately before or during the winter season (88%) or year-round (7%). The clipping date was scheduled according to hair length (52%), sweat amount (47%), and drying time (47%). Participants primarily used two clips: the hunter clip and the blanket clip, both without clipping the head (23% each). The majority of the clipped horses wore a blanket day and night (> 90%). Future studies with observations in the field are needed to support survey data in an effort to develop welfare recommendations for clipping practices utilized with horses. |
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Routledge |
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1088-8705 |
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doi: 10.1080/10888705.2018.1454319 |
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Equine Behaviour @ team @ |
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6613 |
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Author |
Boissy, A. |
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Title |
Fear and Fearfulness in Animals |
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Journal Article |
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Year |
1995 |
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The Quarterly Review of Biology |
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The Quarterly Review of Biology |
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70 |
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2 |
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165-191 |
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Persistence of individual differences in animal behavior in reactions to various environmental challenges could reflect basic divergences in temperament, which might be used to predict details of adaptive response. Although studies have been carried out on fear and anxiety in various species, including laboratory, domestic and wild animals, no consistent definition of fearfulness as a basic trait of temperament has emerged. After a classification of the events that may produce a state of fear, this article describes the great variability in behavior and in physiological patterns generally associated with emotional reactivity. The difficulties of proposing fearfulness-the general capacity to react to a variety of potentially threatening situations-as a valid basic internal variable are then discussed. Although there are many studies showing covariation among the psychobiological responses to different environmental challenges, other studies find no such correlations and raise doubts about the interpretation of fearfulness as a basic personality trait. After a critical assessment of methodologies used in fear and anxiety studies, it is suggested that discrepancies among results are mainly due to the modulation of emotional responses in animals, which depend on numerous genetic and epigenetic factors. It is difficult to compare results obtained by different methods from animals reared under various conditions and with different genetic origins. The concept of fearfulness as an inner trait is best supported by two kinds of investigations. First, an experimental approach combining ethology and experimental psychology produces undeniable indicators of emotional reactivity. Second, genetic lines selected for psychobiological traits prove useful in establishing between behavioral and neuroendocrine aspects of emotional reactivity. It is suggested that fearfulness could be considered a basic feature of the temperament of each individual, one that predisposes it to respond similarly to a variety of potentially alarming challenges, but is nevertheless continually modulated during development by the interaction of genetic traits of reactivity with environmental factors, particularly in the juvenile period. Such interaction may explain much of the interindividual variability observed in adaptive responses. |
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The University of Chicago Press |
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0033-5770 |
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doi: 10.1086/418981 |
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Equine Behaviour @ team @ |
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6664 |
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Author |
Marr, I.; Preisler, V.; Farmer, K.; Stefanski, V.; Krueger, K. |
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Title |
Non-invasive stress evaluation in domestic horses (Equus caballus): impact of housing conditions on sensory laterality and immunoglobulin A |
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Journal Article |
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Year |
2020 |
Publication |
Royal Society Open Science |
Abbreviated Journal |
Royal Society Open Science |
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7 |
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2 |
Pages |
191994 |
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The study aimed to evaluate sensory laterality and concentration of faecal immunoglobulin A (IgA) as non-invasive measures of stress in horses by comparing them with the already established measures of motor laterality and faecal glucocorticoid metabolites (FGMs). Eleven three-year-old horses were exposed to known stressful situations (change of housing, initial training) to assess the two new parameters. Sensory laterality initially shifted significantly to the left and faecal FGMs were significantly increased on the change from group to individual housing and remained high through initial training. Motor laterality shifted significantly to the left after one week of individual stabling. Faecal IgA remained unchanged throughout the experiment. We therefore suggest that sensory laterality may be helpful in assessing acute stress in horses, especially on an individual level, as it proved to be an objective behavioural parameter that is easy to observe. Comparably, motor laterality may be helpful in assessing long-lasting stress. The results indicate that stress changes sensory laterality in horses, but further research is needed on a larger sample to evaluate elevated chronic stress, as it was not clear whether the horses of the present study experienced compromised welfare, which it has been proposed may affect faecal IgA. |
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Royal Society |
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doi: 10.1098/rsos.191994 |
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Equine Behaviour @ team @ |
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6608 |
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Author |
López-Bao, J.V.; Sazatornil, V.; Llaneza, L.; Rodríguez, A. |
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Title |
Indirect Effects on Heathland Conservation and Wolf Persistence of Contradictory Policies that Threaten Traditional Free-Ranging Horse Husbandry |
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Journal Article |
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2013 |
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Conservation Letters |
Abbreviated Journal |
Conservation Letters |
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6 |
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6 |
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448-455 |
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Farmland biodiversity; heathlands; integration of environmental policies; management of livestock carcasses; traditional land uses; wolf conservation |
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Abstract Conservation agencies within the European Union promote the restoration of traditional land uses as a cost-effective way to preserve biodiversity outside reserves. Although the European Union pursues the integration of the environment into strategic decision-making, it also dictates sectoral policies that may damage farmland biodiversity. We illustrate this point by outlining the socioeconomic factors that allow the persistence of traditional free-ranging horse husbandry in Galicia, northwestern Spain. Free-ranging Galician mountain ponies provide ecological and socioeconomic services including the prevention of forest fires, the maintenance of heathlands and wolves, and the attenuation of wolf-human conflicts. This traditional livestock system may have persisted because it entails negligible costs for farmers. Wolf predation upon Galician mountain ponies does not threaten farmer's economies and seems to be tolerated better than attacks to more valuable stock. Recently, European Union's regulations on animal welfare, carcass management, or meat production put new economic and administrative burdens on farmers, make free-ranging horse rearing economically unsustainable, and incentivize its abandonment. The aim of the European Union to integrate environmental policies may be successful to preserve farmland biodiversity only through careful anticipation of the side effects of apparently unrelated regulations on the fragile equilibrium that sustain traditional land uses. |
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John Wiley & Sons, Ltd |
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1755-263x |
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doi: 10.1111/conl.12014 |
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Equine Behaviour @ team @ |
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6622 |
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Author |
Lorenz, K. |
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Title |
Die angeborenen Formen möglicher Erfahrung |
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Journal Article |
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Year |
1943 |
Publication |
Zeitschrift für Tierpsychologie |
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Zeitschrift für Tierpsychologie |
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5 |
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2 |
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235-409 |
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Zusammenfassung Die vorliegende Abhandlung entspringt dem Aufgabenkreis einer jungen Arbeitsgemeinschaft zwischen Geisteswissenschaft und vergleichender Psychologie, die das wichtigste Programm des neugegründeten Philosophischen Institutes der Albertus-Universität in Königsberg darstellt. Sie ist aus der einen Abteilung dieser Anstalt, dem Institut für vergleichende Psychologie hervorgegangen. Obwohl sie eine ganze Reihe unveröffentlichter neuer Beobachtungen und Versuche enthält, stehen diese nicht genug im Mittelpunkte der Untersuchung, um eine Zusammenfassung von Ergebnissen in jener Form möglich zu machen, wie sie sonst in der induktiven Naturforschung üblich ist. Immerhin aber herrscht die induktive Denkweise in der vorliegenden Arbeit so stark vor, daß eine kurze Zusammenfassung angebracht erscbeint, wenn sie auch notgedrungen die Form einer kurzen Inhaltsangabe annehmea muß. |
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John Wiley & Sons, Ltd |
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0044-3573 |
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doi: 10.1111/j.1439-0310.1943.tb00655.x |
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Equine Behaviour @ team @ |
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6609 |
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Author |
Morgan, K.; Funkquist, P.; Nyman, G. |
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Title |
The effect of coat clipping on thermoregulation during intense exercise in trotters |
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Journal Article |
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Year |
2002 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Veterinary Journal |
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34 |
Issue |
S34 |
Pages |
564-567 |
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Keywords |
horse; thermoregulation; heat loss; recovery; blood temperature; oxygen uptake |
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Summary The aim of this study was to study the physiological, especially thermoregulatory, responses during intense exercise in the clipped horse compared to the horse with winter coat. Six Standardbred trotters were studied before and after clipping. They performed an inclined incremental high intensity treadmill exercise test and were monitored during recovery. The clipped horse differed significantly (ANOVA) during exercise as compare to coated: less increase in central venous blood temperature, higher skin surface temperature, greater difference skin to ambient temperature and higher rate of nonevaporative heat loss. The clipped horse had significantly lower total cutaneous evaporative heat loss from walk to end of peak exercise and a shorter time for recovery for the respiratory rate using a paired t test. The clipped horse showed a tendency (P = 0.059) to decreased oxygen uptake during the stepwise increase in workload. We concluded that the clipped horse experienced less strain on the thermoregulatory system due to an enhanced heat loss. Some clipped horses in the study showed a more efficient power output; future studies with emphasis on respiration and oxygen demand are needed to explain this. |
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American Medical Association (AMA) |
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0425-1644 |
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doi: 10.1111/j.2042-3306.2002.tb05484.x |
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Equine Behaviour @ team @ |
Serial |
6614 |
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Author |
Byström, A.; Clayton, H.M.; Hernlund, E.; Rhodin, M.; Egenvall, A. |
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Title |
Equestrian and biomechanical perspectives on laterality in the horse |
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Journal Article |
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Year |
2020 |
Publication |
Comparative Exercise Physiology |
Abbreviated Journal |
Comp. Exerc. Physiol. |
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Volume |
16 |
Issue |
1 |
Pages |
35-45 |
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It has been suggested that one of the underlying causes of asymmetrical performance and left/right bias in sound riding horses is laterality originating in the cerebral cortices described in many species. The aim of this paper is to review the published evidence for inherent biomechanical laterality in horses deemed to be clinically sound and relate these findings to descriptions of sidedness in equestrian texts. There are no established criteria to determine if a horse is left or right dominant but the preferred limb has been defined as the forelimb that is more frequently protracted during stance and when grazing. Findings on left-right differences in forelimb hoof shape and front hoof angles have been linked to asymmetric forelimb ground reaction forces. Asymmetries interpreted as motor laterality have been found among foals and unhandled youngsters, and the consistency or extent of asymmetries seems to increase with age. Expressions of laterality also vary with breed, sex, training and handling, stress, and body shape but there are no studies of the possible link between laterality and lameness. In a recent study of a group of seven dressage horses, a movement pattern in many ways similar to descriptions of sidedness in the equestrian literature, e.g. one hind limb being more protracted and placed more laterally than the other, has been documented. The role of innate laterality versus painful conditions, training, human handedness and simply habit remains to be determined. Understanding the biomechanical manifestations of laterality in healthy horses, including individual variation, would yield a potential basis for how laterality should be taken into account in relation to training/riding and rehabilitation of lameness. |
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Wageningen Academic Publishers |
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1755-2540 |
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doi: 10.3920/CEP190022 |
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Equine Behaviour @ team @ |
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6663 |
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Author |
Boyce, P.N.; McLoughlin, P.D. |
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Title |
Ecological Interactions Involving Feral Horses and Predators: Review with Implications for Biodiversity Conservation |
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Journal Article |
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Year |
2021 |
Publication |
The Journal of Wildlife Management |
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Jour. Wild. Mgmt. |
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n/a |
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n/a |
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apparent competition; artificial selection; community ecology; conservation; feral horse (Equus ferus caballus); life history; predator-prey dynamics |
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ABSTRACT For many ecosystems, feral horses are increasingly becoming an important if not dominant component of ungulate biomass and hence influence on community dynamics. Yet we still know little of how horses contribute to key ecological interactions including predator-prey and indirect competitive relationships at a community level. Notably, feral species like horses can exhibit life-history traits that differ from that of native (mainly artiodactyl) herbivore competitors. Artificial selection for traits like increased, early, or extended reproduction that have yet to be reversed by natural selection, coupled with naturally selected differences in anatomy and behavior, in addition to unique management objectives for horses compared to other species, means that the dynamics of feral horse populations are not likely to align with what might be expected of other large herbivores. Unexpected population dynamics and inherent biological asymmetries between native ungulates and feral horses may therefore influence the former via direct competition for shared resources and through enemy-mediated interactions like apparent competition. In several localities feral horses now co-exist with multiple native prey species, some of which are in decline or are species at risk. Compounding risks to native species from direct or indirect competitive exclusion by horses is the unique nature and socio-political context of feral horse management, which tends towards allowing horse populations to be limited largely by natural, density-dependent factors. We summarize the inherent asymmetries between feral horse biology and that of other ungulate prey species with consequences for conservation, focusing on predator-prey and emerging indirect interactions in multi-prey systems, and highlight future directions to address key knowledge gaps in our understanding of how feral horses may now be contributing to the (re)structuring of food webs. Observations of patterns of rapid growth and decline, and associated skews in sex ratios of feral horse populations, indicate a heightened potential for indirect interactions among large ungulate prey species, where there is a prevalence of feral horses as preferred prey, particularly where native prey are declining. In places like western North America, we expect predator-prey interactions involving feral horses to become an increasingly important factor in the conservation of wildlife. This applies not only to economically or culturally important game species but also at-risk species, both predators (e.g., wolves [Canis lupus], grizzly bears [Ursus arctos]) and prey (e.g., woodland caribou [Rangifer tarandus caribou]), necessitating an ecological understanding of the role of horses in natural environments that goes beyond that of population control. ? 2021 The Wildlife Society. |
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John Wiley & Sons, Ltd |
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0022-541x |
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https://doi.org/10.1002/jwmg.21995 |
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Equine Behaviour @ team @ |
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6642 |
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