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Author Piro, M.; Benjouad, A.; Karom, A.; Nabich, A.; Benbihi, N.; El Allali, K.; Machmoum, M.; Ouragh, L.
Title Genetic Structure of Severe Combined Immunodeficiency Carrier Horses in Morocco Inferred by Microsatellite Data Type Journal Article
Year 2011 Publication Journal of Equine Veterinary Science Abbreviated Journal J. Equine Vet. Sci.
Volume 31 Issue 11 Pages 618-624
Keywords Scid; Arab horses; Arab-Barb horses; Microsatellite; Dna; Genetic structure
Abstract A total of 17 microsatellite deoxyribonucleic acid loci used routinely for horse parentage control were used to evaluate genetic diversity among normal Arabian horses and severe combined immunodeficiency (SCID) carrier Arabian horses (ArS) and normal Arab-Barb horses and SCID carrier Arab-Barb horses (ArbeS). On the basis of the genotype of 186 horses, mean allelic diversity was estimated as 6.82, 5.53, and 6.7059 in normal Arabian horses, ArS, and for both groups of Arab-Barb horses, respectively. Five specific alleles were observed in ArS and ArbeS, with one common with ArS at HMS6, whereas five alleles common between ArS and ArbeS had a high frequency. Expected and observed heterozygosity showed great heterogeneity in the population studied and were similar or higher when compared with other studies on Arabian horses. Coefficient of gene differentiation Gst of Nei associated with Nei's genetic distance and multivariate correspondence analysis indicated a possible differentiation between the studied populations when analyzed separately according to breed. Probability of assignment of a horse to a specific group was assessed using a full and partial Bayesian approach. In all, 80.6% of Arab horses and 78.2% of Arab-Barb horses were assigned properly with a partial Bayesian test, which provided better results than the full one. These findings will be useful for identification of SCID carrier horses by using the microsatellite deoxyribonucleic acid loci used routinely for horse parentage control in our laboratory.
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ISSN 0737-0806 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6657
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Author Bandini, E.; Tennie C.
Title Exploring the role of individual learning in animal tool-use Type Journal Article
Year 2020 Publication PeerJ Abbreviated Journal PeerJ
Volume 25 Issue Pages 8:e9877
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Abstract The notion that tool-use is unique to humans has long been refuted by the growing number of observations of animals using tools across various contexts. Yet, the mechanisms behind the emergence and sustenance of these tool-use repertoires are still heavily debated. We argue that the current animal behaviour literature is biased towards a social learning approach, in which animal, and in particular primate, tool-use repertoires are thought to require social learning mechanisms (copying variants of social learning are most often invoked). However, concrete evidence for a widespread dependency on social learning is still lacking. On the other hand, a growing body of observational and experimental data demonstrates that various animal species are capable of acquiring the forms of their tool-use behaviours via individual learning, with (non-copying) social learning regulating the frequencies of the behavioural forms within (and, indirectly, between) groups. As a first outline of the extent of the role of individual learning in animal tool-use, a literature review of reports of the spontaneous acquisition of animal tool-use behaviours was carried out across observational and experimental studies. The results of this review suggest that perhaps due to the pervasive focus on social learning in the literature, accounts of the individual learning of tool-use forms by naïve animals may have been largely overlooked, and their importance under-examined.
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Call Number Equine Behaviour @ team @ Serial 6659
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Author Bandini , E.; Motes-Rodrigo, A.; Steele, M.P.; Rutz, C.; Tennie, C.
Title Examining the mechanisms underlying the acquisition of animal tool behaviour Type Journal Article
Year 2020 Publication Biology Letters Abbreviated Journal Biol. Lett.
Volume 16 Issue 2020122 Pages
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Call Number Equine Behaviour @ team @ Serial 6660
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Author Solmsen, E.-H.; Bathen, M.; Grüntjens, T.; Hempel, E.; Klose, M.; Krüger, K.; Martin, H.; Meyer, A.; Schütte, P.; Vogel, L.; Wiezorek, S.; Wittor, B.
Title Protecting horses against wolves in Germany Type Journal Article
Year 2021 Publication Carnivore Damage Prevention News Abbreviated Journal CPDnews
Volume 23 Issue Pages 12-19
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Call Number Equine Behaviour @ team @ Serial 6661
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Author Maloney, S.J.
Title The Relationship Between Asymmetry and Athletic Performance: A Critical Review Type Journal Article
Year 2019 Publication The Journal of Strength & Conditioning Research Abbreviated Journal
Volume 33 Issue 9 Pages
Keywords symmetry; imbalance; power; strength
Abstract Maloney, SJ. The relationship between asymmetry and athletic performance: A critical review. J Strength Cond Res 33(9): 2579-2593, 2019--Symmetry may be defined as the quality to demonstrate an exact correspondence of size, shape, and form when split along a given axis. Although it has been widely asserted that the bilateral asymmetries are detrimental to athletic performance, research does not wholly support such an association. Moreover, the research rarely seeks to distinguish between different types of bilateral asymmetry. Fluctuating asymmetries describe bilateral differences in anthropometric attributes, such as nostril width and ear size, and are thought to represent the developmental stability of an organism. There is evidence to suggest that fluctuating asymmetries may be related to impaired athletic performance, although contradictory findings have been reported. Sporting asymmetries is a term that may better describe bilateral differences in parameters, such as force output or jump height. These asymmetries are likely to be a function of limb dominance and magnified by long-standing participation within sport. Sporting asymmetries do not seem to carry a clear influence on athletic performance measures. Given the vast discrepancy in the methodologies used by different investigations, further research is warranted. Recent investigations have demonstrated that training interventions can reduce sporting asymmetries and improve performance. However, studies have not sought to determine whether the influence of sporting asymmetry is independent of improvements in neuromuscular parameters. It may be hypothesized that the deficient (weaker) limb has a greater potential for adaptation in comparison to the strong limb and may demonstrate greater responsiveness to training.
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ISSN 1064-8011 ISBN Medium
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Call Number Equine Behaviour @ team @ 00124278-201909000-00032 Serial 6662
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Author Henry, S.; Fureix, C.; Rowberry, R.; Bateson, M.; Hausberger, M.
Title Do horses with poor welfare show 'pessimistic' cognitive biases? Type Journal Article
Year 2017 Publication The Science of Nature Abbreviated Journal Sci. Nat.
Volume 104 Issue 1 Pages 8
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Abstract This field study tested the hypothesis that domestic horses living under putatively challenging-to-welfare conditions (for example involving social, spatial, feeding constraints) would present signs of poor welfare and co-occurring pessimistic judgement biases. Our subjects were 34 horses who had been housed for over 3 years in either restricted riding school situations (e.g. kept in single boxes, with limited roughage, ridden by inexperienced riders; N = 25) or under more naturalistic conditions (e.g. access to free-range, kept in stable social groups, leisure riding; N = 9). The horses' welfare was assessed by recording health-related, behavioural and postural indicators. Additionally, after learning a location task to discriminate a bucket containing either edible food ('positive' location) or unpalatable food ('negative' location), the horses were presented with a bucket located near the positive position, near the negative position and halfway between the positive and negative positions to assess their judgement biases. The riding school horses displayed the highest levels of behavioural and health-related problems and a pessimistic judgment bias, whereas the horses living under more naturalistic conditions displayed indications of good welfare and an optimistic bias. Moreover, pessimistic bias data strongly correlated with poor welfare data. This suggests that a lowered mood impacts a non-human species' perception of its environment and highlights cognitive biases as an appropriate tool to assess the impact of chronic living conditions on horse welfare.
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ISSN 1432-1904 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Henry2017 Serial 6665
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Author Lucidi, P.; Bacco, G.; Sticco, M.; Mazzoleni, G.; Benvenuti, M.; Bernabò, N.; Trentini, R.
Title Assessment of motor laterality in foals and young horses (Equus caballus) through an analysis of derailment at trot Type Journal Article
Year 2013 Publication Physiology & Behavior Abbreviated Journal Physiol. Behav.
Volume 109 Issue Pages 8-13
Keywords Horse; Laterality; Longeing; Sidedness
Abstract The conflicting results regarding the study of motor laterality in horses may indicate that there does not exist a proper method to assess the degree and the direction of motor bias in these animals. Unfortunately, even less is known about the development of laterality in horses, and to what extent early manipulations can still exert their effects in adulthood. We propose a new method that can be easily applied at a very early age thus avoiding testing adult horses eventually biased by human handling and/or training. Forty-six horses (29 nine-month-old foals and 17 two-year old horses) were handled since birth bilaterally and housed in groups in wide areas. At the time of the analysis, in order to minimize environmental and sensorial disturbances, each horse was tested in a round pen individually or as dyad mother-foal. The ability/inability to properly execute a circle at trot was then recorded, assuming the direction of derailment, i.e. the cutting of the circle, as an indicator of motor bias. From the results of the study it is arguable that motor laterality in horses is acquired over time: in fact foals tested while their mothers were being subjected to longeing showed a higher percentage of ambidextrous animals, while two-year-old horses appeared biased toward the right (p<0.05). Results are discussed in the light of the scientific knowledge about equine biomechanics, taking into account horses' locomotion that leads to the advancement of the body mass through the activation of a kinetic chain that originates from the hindquarters.
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ISSN 0031-9384 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6666
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Author Schwarz, S.; Marr, I.; Farmer, K.; Graf, K.; Stefanski, V.; Krueger, K.
Title Does Carrying a Rider Change Motor and Sensory Laterality in Horses? Type Journal Article
Year 2022 Publication Animals Abbreviated Journal Animals
Volume 12 Issue 8 Pages 992
Keywords laterality; horse; rider; sensory laterality; motor laterality; novel object; side preference
Abstract Laterality in horses has been studied in recent decades. Although most horses are kept for riding purposes, there has been almost no research on how laterality may be affected by carrying a rider. In this study, 23 horses were tested for lateral preferences, both with and without a rider, in three different experiments. The rider gave minimal aids and rode on a long rein to allow the horse free choice. Firstly, motor laterality was assessed by observing forelimb preference when stepping over a pole. Secondly, sensory laterality was assessed by observing perceptual side preferences when the horse was confronted with (a) an unfamiliar person or (b) a novel object. After applying a generalised linear model, this preliminary study found that a rider increased the strength of motor laterality (p = 0.01) but did not affect sensory laterality (p = 0.8). This suggests that carrying a rider who is as passive as possible does not have an adverse effect on a horse&#65533;s stress levels and mental state.
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Call Number Equine Behaviour @ team @ Serial 6667
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Author Voigtlaender-Schnabel, S.; Vogel, L.; Greiner, B.; Wiezorek, S.; Schuette, P.; Solmsen, E.-H.; Martin; H.; Hempel, E.; Gruentjens, T.; Bathen, M.; Herold, P.; Krueger, K.
Title Reactions of horses to wildlife and livestock guarding dogs Type Journal Article
Year 2022 Publication Carnivore Damage Prevention News Abbreviated Journal CDPNews
Volume 24 Issue Pages 49-58
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Call Number Equine Behaviour @ team @ Serial 6668
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Author Krueger, K.; Schwarz, S.; Marr, I.; Farmer, K.
Title Laterality in Horse Training: Psychological and Physical Balance and Coordination and Strength Rather Than Straightness Type Magazine Article
Year 2022 Publication Animals Abbreviated Journal Animals
Volume 12 Issue 8 Pages 1042
Keywords balance; body asymmetry; equitation; horse; motor laterality; sensory laterality; stress; welfare
Abstract For centuries, a goal of training in many equestrian disciplines has been to straighten the horse, which is considered a key element in achieving its responsiveness and suppleness. However, laterality is a naturally occurring phenomenon in horses and encompasses body asymmetry, motor laterality and sensory laterality. Furthermore, forcibly counterbalancing motor laterality has been considered a cause of psychological imbalance in humans. Perhaps asymmetry and laterality should rather be accepted, with a focus on training psychological and physical balance, coordination and equal strength on both sides instead of enforcing “straightness”. To explore this, we conducted a review of the literature on the function and causes of motor and sensory laterality in horses, especially in horses when trained on the ground or under a rider. The literature reveals that body asymmetry is innate but does not prevent the horse from performing at a high level under a rider. Motor laterality is equally distributed in feral horses, while in domestic horses, age, breed, training and carrying a rider may cause left leg preferences. Most horses initially observe novel persons and potentially threatening objects or situations with their left sensory organs. Pronounced preferences for the use of left sensory organs or limbs indicate that the horse is experiencing increased emotionality or stress, and long-term insufficiencies in welfare, housing or training may result in left shifts in motor and sensory laterality and pessimistic mentalities. Therefore, increasing laterality can be regarded as an indicator for insufficiencies in housing, handling and training. We propose that laterality be recognized as a welfare indicator and that straightening the horse should be achieved by conducting training focused on balance, coordination and equal strength on both sides.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title Animals
Series Volume 12 Series Issue 8 Edition
ISSN 2076-2615 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6670
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