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Maros, K.; Gácsi, M.; Miklósi, Á |
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Title |
Comprehension of human pointing gestures in horses ( Equus caballus ) |
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2008 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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11 |
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3 |
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457-466 |
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Human-animal communication – Pointing – Horse |
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Abstract Twenty domestic horses (Equus caballus) were tested for their ability to rely on different human gesticular cues in a two-way object choice task. An experimenter hid food under one of two bowls and after baiting, indicated the location of the food to the subjects by using one of four different cues. Horses could locate the hidden reward on the basis of the distal dynamic-sustained, proximal momentary and proximal dynamic-sustained pointing gestures but failed to perform above chance level when the experimenter performed a distal momentary pointing gesture. The results revealed that horses could rely spontaneously on those cues that could have a stimulus or local enhancement effect, but the possible comprehension of the distal momentary pointing remained unclear. The results are discussed with reference to the involvement of various factors such as predisposition to read human visual cues, the effect of domestication and extensive social experience and the nature of the gesture used by the experimenter in comparative investigations. |
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Equine Behaviour @ team @ |
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4388 |
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McGrogan, C.; Hutchison, M.D.; King, J.E. |
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Title |
Dimensions of horse personality based on owner and trainer supplied personality traits |
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Journal Article |
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2008 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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113 |
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1 |
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206-214 |
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Horse; Personality; Domestication; Five-factor model |
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Ratings on 36 personality descriptive adjectives were made on 100 companion horses by owners, trainers, and stable managers. The descriptors had been previously provided by a subset of 30 raters based on their own experience with horses. Principal components analysis revealed three statistically significant factors accounting for 59% of the variance. The first was a large, complex factor resembling the human Agreeableness factor. This factor contained four clusters of items reflecting obedience, kindness, sociality, and non-aggressiveness. The second factor resembled human Extraversion, although it also contained items reflecting intellect and curiosity. The third factor reflected Neuroticism or Emotionality. Factors similar to Agreeableness, Extraversion, and Emotionality are frequently observed in other taxa. The diverse composition of the Agreeableness factor indicating covariation among obedience, kindness, sociality, and non-aggressiveness may be a result of the intense artificial selection for all four components during the 6000 years of horse domestication. |
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Admin @ knut @ |
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4337 |
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Broucek, J., Uhrincat, M., Kišac, P., Hanus, A.. |
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Title |
Hair Whorl Position as a Predictor of Learning Ability and Locomotor Behavior in Cattle? |
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2004 |
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ACTA VETERINARIA BRUNENSIS |
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ACTA VET. BRNO |
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73 |
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4 |
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455-459 |
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Cattle, hair whorl, reversal learning, open-field |
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The aim of our work was to investigate the hypothesis that the speed of solving the maze tests and
locomotor behavior of heifers in open-field tests are affected by the height location of facial whorl.
Fifty-eight Holstein heifers were used. Maze learning was observed at the age of 15 weeks, and an
open-field test was applied at two ages, 16 weeks and 18 months. Whorl placement was recorded by
one person as each heifer entered the scale. The hair whorl position was determined on the basis of
two patterns: A) hair whorl high, middle and low and B) hair whorl high and low. Heifers with a
high hair whorl were the fastest (77.8 ± 84.3 s) and heifers with a middle hair whorl the slowest (87.3
± 100.3 s) in the A pattern during the maze tests. In the B whorl pattern, heifers with a high hair whorl
ran across the maze in 84.5 ± 95.2 s and heifers with a low hair whorl in 84.1 ± 97.9 s. The number
of crossed squares in a 5-minute open-field test in the A pattern was the non-significantly highest in
heifers with a high hair whorl (43.4) at the age of 16 weeks. In the B whorl pattern, heifers with a
high hair whorl were also more mobile, but neither differences in individual minutes nor in the whole
5 minutes were significant. Heifers with a high hair whorl displayed the strongest locomotory
behavior (37.6 squares) and heifers with a low hair whorl (30.8) were the slowest in the A pattern at
the age of 18 months. The differences were not significant. In the B whorl pattern, heifers with a
high hair whorl crossed more squares, but the difference was not significant in comparison with
heifers with a low hair whorl. We found that the time of traversing the maze and the locomotor
activity in open-field test may not be influenced in the dairy cattle by the height facial whorl position |
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Equine Behaviour @ team @ |
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4321 |
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Jonart, L.M.; Hill, G.E.; Badyaev, A.V. |
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Fighting ability and motivation: determinants of dominance and contest strategies in females of a passerine bird |
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2007 |
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Animal Behaviour. |
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Anim. Behav. |
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74 |
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6 |
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1675-1681 |
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aggression; Carpodacus mexicanus; communication; house finch; passerines; resource holding potential |
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The communication of aggressive motivation or fighting ability has important fitness consequences for competing animals. Selection should favour rapid and honest communication between opponents to settle dominance relationships while avoiding prolonged and intense fighting. We investigated factors that influence fighting strategies and contest outcomes in female house finches, Carpodacus mexicanus, specifically focusing on the following questions. (1) What social contexts trigger an aggressive response? (2) Does body size and condition contribute to female fighting ability? (3) Do contextual factors, such as mate presence, nest status, nest proximity, and site experience contribute to fighting motivation? (4) Does contest intensity and duration increase as the differences in fighting ability between opponents decrease? (5) What is the relative contribution of fighting ability and aggressive motivation to the outcome of a contest? We found that aggression was triggered most frequently by female intrusions in the vicinity of nest and by extrapair female intrusions on an established pair. Female fighting and contest outcomes were strongly influenced by body condition and body size, and females were more motivated to initiate fights and won more contests when their mates were present. Females at the later breeding stages and those fighting closer to their nests were dominant and won more fights compared to females at earlier breeding stages or further from their nests. Females initiated a greater proportion of contests against opponents with similar local familiarity and breeding history. Escalated and prolonged contests, while rare, occurred exclusively between females of the most similar body size and condition. When differences in body condition between opponents are not easily perceived, contestants might escalate contests for more reliable assessments of relative fighting ability. Finally, body condition was not a strong determinant of contest outcome in the contexts with easily assessed differences in the resource value (e.g. mate presence), but without these motivational differences, body condition was the ultimate determinant of contest outcomes. |
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Equine Behaviour @ team @ |
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4317 |
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Palagi, E. |
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Sharing the motivation to play: the use of signals in adult bonobos |
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2008 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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75 |
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3 |
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887-896 |
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bonobo; full play face; Pan paniscus; play face; playful propensity; ritualization; social play; social tolerance; solitary play; visual communication |
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Gestures and facial displays are involved in regulating many aspects of mammal social life such as aggression, dominance-subordinate relationships, appeasement and play. Playful activity is an interesting behaviour for examining the role of signals as intentional communication systems. When animals play they perform patterns that are used in other serious contexts. To avoid miscommunication, many species have evolved signals to maintain a playful mood. Bonobos, Pan paniscus, with their flexible social relationships and playful propensity, may represent a good model species to test some hypotheses on adult play signalling. I analysed the potential roles of facial play expressions and solitary play in soliciting and regulating social play and found that adult bonobos used the play face (relaxed open-mouth display) in a selective manner. Play faces were more frequent during social than solitary play and, within social play, polyadic sessions (even though less frequent than dyadic sessions) were characterized by a higher frequency of signals. Following the rule of play intensity matching, play faces were more frequent when the two players matched in age and size (sessions among adults). Moreover, among dyads there was a positive correlation between the frequency of aggressive interactions performed and the frequency of play signals used, thus suggesting that signals are crucial in play negotiations among individuals showing high baseline levels of aggression. Finally, solitary play, especially when it involved pirouettes and somersaults, had an important role in triggering social play. |
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Equine Behaviour @ team @ |
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4316 |
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Jordan, J. |
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[Modern views on the structure and function of the vomeronasal (Jacobson's) organ in mammals] |
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1970 |
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Otolaryngologia Polska. The Polish Otolaryngology |
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Otolaryngol Pol |
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24 |
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4 |
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457-462 |
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Animals; Cats; Dogs; Guinea Pigs; Horses; Humans; Mice; Nasal Septum/anatomy & histology/blood supply/cytology/innervation/physiology; Nose/*anatomy & histology/blood supply/innervation/*physiology; Rabbits; Rats; Sheep; Smell |
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Obecne poglady na budowe i czynnosc narzadu lemieszowo-nosowego (Jacobsona) u ssakow |
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0030-6657 |
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PMID:4918960 |
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Equine Behaviour @ team @ |
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4315 |
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Bradley, B.L. |
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Animal flavor types and their specific uses in compound feeds by species and age |
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1980 |
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Fortschritte in der Tierphysiologie und Tierernahrung |
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Fortschr Tierphysiol Tierernahr |
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110-122 |
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Aging; *Animal Feed; Animals; Cattle; Energy Intake; *Flavoring Agents; Horses; Poultry; Smell; Species Specificity; Sweetening Agents; Swine; Taste |
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PMID:7390352 |
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Equine Behaviour @ team @ |
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4314 |
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Piggins, D.; Phillips, C.J.C. |
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Awareness in domesticated animals--concepts and definitions |
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1998 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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57 |
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3-4 |
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181-200 |
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Complex mind; Awareness; Humans; Domesticated animals; Conscious state |
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Humans will probably never experience the awareness of another species, but adopting a broad concept of awareness leads to the conclusion that other species have some awareness. The existence of a more complex mind in humans, compared with other species, leads some to suggest that awareness only exists in humans. We postulate that humans possess a significantly increased level of awareness, facilitated in particular by the acquisition of language, but that generally animals possess a level of awareness that is appropriate to their needs. Categories of awareness can be devised by identifying levels, such as are used in the identification of the conscious state in humans, or by ranking states of awareness in order of complexity. A scheme is proposed that combines these two approaches, which is considered suitable for use with domesticated animals. The advantages of identifying awareness as being sensation-, perception- or cognition-based are discussed, as well as the possibility of a scheme based on the degree and site of CNS processing. Finally, the acquisition of awareness by learning and inheritance is considered, and it is argued that in variable environments, animals will evolve increased awareness, whereas in very stable environments the energetic cost of awareness will encourage the evolution of less aware animals. |
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Equine Behaviour @ team @ |
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4308 |
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Turner, K.K.; Nielsen, B.D.; O'Connor, C.I.; Burton, J.L. |
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Bee pollen product supplementation to horses in training seems to improve feed intake: A pilot study |
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2006 |
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Journal of Animal Physiology and Animal Nutrition |
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J Anim Physiol Anim Nutr (Berl) |
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90 |
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9-10 |
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414-420 |
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*Animal Nutrition Physiology; Animals; Antibody Formation; Bees; Detergents; Dietary Fiber/metabolism; Dietary Supplements; *Digestion; Eating/*drug effects; Exercise Test/veterinary; Female; Heart Rate/drug effects/physiology; Horses/blood/immunology/*physiology; Leukocyte Count/*veterinary; Male; Oxygen Consumption/drug effects/physiology; Physical Conditioning, Animal/*physiology; Pilot Projects; *Pollen; Random Allocation |
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The objective of this study was to determine the efficacy of supplementation of Dynamic Trio 50/50, a bee pollen-based product, to improve physical fitness, blood leukocyte profiles, and nutritional variables in exercised horses. Ten Arabian horses underwent a standardised exercise test (SET), then were pair-matched by sex and fitness and randomly assigned to BP (receiving 118 g of Dynamic Trio 50/50 daily) or CO (receiving 73 g of a placebo) for a period of 42 days. A total collection was conducted from days 18 to 21 on six geldings to determine nutrient retention and neutral detergent fibre (NDF) and acid detergent fibre (ADF) digestibility. Horses were exercise conditioned and completed another SET on day 42. V160 and V200 were calculated from SET heart rates (HR). Lactate, glucose, haematocrit (HT) and haemoglobin (HB) concentrations were determined from SET blood samples. Total leukocyte count, and circulating numbers of various leukocytes and IgG, IgM and IgA concentrations were determined in rest and recovery blood samples from both SETs. Geldings on BP (n = 3) ate more feed than CO. BP had less phosphorus excretion, and tended to retain more nitrogen. BP tended to digest more NDF and ADF while having lower NDF digestibility and tending to have lower ADF digestibility. No treatment differences existed for V160 and V200, HR, lactate, HT and HB. There was a trend for lymphocyte counts to be lower in BP than CO on day 42. Dynamic Trio 50/50 supplementation may have a positive effect on performance by helping horses in training meet their potentially increased nutrient demands by increasing feed intake and thus nutrient retention. |
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Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA. kturner@uga.edu |
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PMID:16958799 |
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Equine Behaviour @ team @ |
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4237 |
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Smith, D.G.; Pearson, R.A. |
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A review of the factors affecting the survival of donkeys in semi-arid regions of sub-Saharan Africa |
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2005 |
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Tropical Animal Health and Production |
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Trop Anim Health Prod |
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37 Suppl 1 |
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1-19 |
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Africa South of the Sahara; Animal Nutrition Physiology; Animals; Behavior, Animal; Cattle; Equidae/growth & development/*physiology; Socioeconomic Factors |
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The large fluctuations seen in cattle populations during periods of drought in sub-Saharan Africa are not evident in the donkey population. Donkeys appear to have a survival advantage over cattle that is increasingly recognized by smallholder farmers in their selection of working animals. The donkey's survival advantages arise from both socioeconomic and biological factors. Socioeconomic factors include the maintenance of a low sustainable population of donkeys owing to their single-purpose role and their low social status. Also, because donkeys are not usually used as a meat animal and can provide a regular income as a working animal, they are not slaughtered in response to drought, as are cattle. Donkeys have a range of physiological and behavioural adaptations that individually provide small survival advantages over cattle but collectively may make a large difference to whether or not they survive drought. Donkeys have lower maintenance costs as a result of their size and spend less energy while foraging for food; lower energy costs result in a lower dry matter intake (DMI) requirement. In donkeys, low-quality diets are digested almost as efficiently as in ruminants and, because of a highly selective feeding strategy, the quality of diet obtained by donkeys in a given pasture is higher than that obtained by cattle. Lower energy costs of walking, longer foraging times per day and ability to tolerate thirst may allow donkeys to access more remote, under-utilized sources of forage that are inaccessible to cattle on rangeland. As donkeys become a more popular choice of working animal for farmers, specific management practices need to be devised that allow donkeys to fully maximize their natural survival advantages. |
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Department of Agriculture and Forestry, University of Aberdeen, Aberdeen, AB24 3FX, Scotland, UK. d.g.smith@abdn.ac.uk |
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0049-4747 |
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PMID:16335068 |
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Equine Behaviour @ team @ |
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4231 |
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