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Straatsma, G.; Samson, R.A.; Olijnsma, T.W.; Op Den Camp, H.J.; Gerrits, J.P.; Van Griensven, L.J. |
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Ecology of Thermophilic Fungi in Mushroom Compost, with Emphasis on Scytalidium thermophilum and Growth Stimulation of Agaricus bisporus Mycelium |
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Journal Article |
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Year |
1994 |
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Appl Environ Microbiol |
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60 |
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2 |
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454-458 |
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Twenty-two species of thermophilic fungi were isolated from mushroom compost. Scytalidium thermophilum was present in the compost ingredients, fresh straw, horse droppings, and drainage from compost and dominated the fungal biota of compost after preparation. Of 34 species of thermophilic fungi tested, 9 promoted mycelial growth of Agaricus bisporus on sterilized compost: Chaetomium thermophilum, an unidentified Chaetomium sp., Malbranchea sulfurea, Myriococcum thermophilum, S. thermophilum, Stilbella thermophila, Thielavia terrestris, and two unidentified basidiomycetes. These species will be considered for future experiments on inoculation and more controlled preparation of compost. |
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Mushroom [ill] Station, Horst, The Netherlands |
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0099-2240 |
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PMID:16349175 |
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Equine Behaviour @ team @ |
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2664 |
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Author |
Heyes CM |
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Title |
Reflections on self-recognition in primates |
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Year |
1994 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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47 |
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909 |
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Equine Behaviour @ team @ |
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3005 |
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Sugiyama Y |
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Title |
Tool use by wild chimpanzees |
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1994 |
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Nature |
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Nature |
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376 |
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327 |
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Equine Behaviour @ team @ |
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3041 |
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Premack D; Premack AJ |
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Title |
Levels of causal understanding in chimpanzees and children |
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Year |
1994 |
Publication |
Cognition |
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50 |
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347 |
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Equine Behaviour @ team @ |
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3072 |
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Andrews, F.M.; Ralston, S.L.; Sommardahl, C.S.; Maykuth, P.L.; Green, E.M.; White, S.L.; Williamson, L.H.; Holmes, C.A.; Geiser, D.R. |
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Title |
Weight, water, and cation losses in horses competing in a three-day event |
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Journal Article |
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Year |
1994 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
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Volume |
205 |
Issue |
5 |
Pages |
721-724 |
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Animals; Body Water/*metabolism; Body Weight/*physiology; Exertion/*physiology; Female; Horses/blood/*metabolism; Male; Physical Conditioning, Animal/physiology; Physical Endurance/physiology; Potassium/*blood; Sodium/*blood |
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Body weight of 48 horses competing in a 3-day event was measured the day before the event (baseline), following the dressage phase of the event (day 1), after the endurance phases of the event (day 2), and 18 to 24 hours after the endurance phases (day 3). Plasma sodium and potassium concentrations were measured the evening before, immediately after, and 10 minutes after the endurance phases. Total body water, water loss, and net exchangeable cation loss were then calculated. Body weight and total body water were significantly decreased, compared with baseline values, at all times during the event, and significant water loss was detected. The largest changes were recorded after the endurance phases of the event. Water deficits were still detected 18 to 24 hours after the endurance phases of the event. Mean plasma sodium concentration was significantly increased immediately after the endurance phases of the event, compared with concentration measured the evening before, and remained increased after the 10-minute recovery period, presumably because of dehydration. Mean plasma potassium concentration was significantly increased immediately after the endurance phases of the event, compared with concentration measured the evening before, but was not increased after the 10-minute recovery period. |
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Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville 37901-1071 |
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0003-1488 |
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PMID:7989242 |
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Equine Behaviour @ team @ |
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3745 |
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Author |
Clayton, H.M. |
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Title |
Comparison of the stride kinematics of the collected, working, medium and extended trot in horses |
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Journal Article |
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Year |
1994 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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26 |
Issue |
3 |
Pages |
230-234 |
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Keywords |
Analysis of Variance; Animals; Biomechanics; Female; Forelimb/anatomy & histology/physiology; Gait/*physiology; Hindlimb/anatomy & histology/physiology; Horses/anatomy & histology/*physiology; Locomotion/physiology; Male; Motion Pictures |
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Highly-trained dressage horses were studied to test the hypothesis that stride length is altered independently of stride duration in the transitions between the collected, working, medium and extended trot. Six well-trained dressage horses were filmed at a frame rate of 150 frames/s performing the collected, working, medium and extended trots in a sand arena. Temporal, linear and angular data were extracted from the films, with 4 strides being analysed for each horse and gait type. There were no significant asymmetries between the left and rights limbs or diagonals when data from the whole group were pooled, but 3 horses showed asymmetries in one or more variables (P < 0.01). Analysis of variance and post-hoc tests indicated that the speed increased significantly (P < 0.01) from the collected (3.20 m/s) to the working (3.61 m/s) to the medium (4.47 m/s) to the extended (4.93 m/s) trot. The increases in speed were associated with a significant increase in stride length from 250 cm in the collected trot, to 273 cm in the working trot, 326 cm in the medium trot and 355 cm in the extended trot (P < 0.01). The lengthening of the stride was a result of increases between each gait type in the over-reach distance, whereas the diagonal distance was significantly longer in the extended than the collected trot only (P < 0.01). The stride duration tended to decrease as speed increased, and the difference became significant between the collected and extended trots (P < 0.01). |
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Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada |
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0425-1644 |
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PMID:8542844 |
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Equine Behaviour @ team @ |
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3746 |
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Author |
Atock, M.A.; Williams, R.B. |
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Title |
Welfare of competition horses |
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Journal Article |
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Year |
1994 |
Publication |
Revue Scientifique et Technique (International Office of Epizootics) |
Abbreviated Journal |
Rev Sci Tech |
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13 |
Issue |
1 |
Pages |
217-232 |
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*Animal Welfare; Animals; Doping in Sports; Ethics; Heat; Horses/*physiology; Housing, Animal/standards; Humidity; International Cooperation; Sports/*standards; Transportation/standards; Veterinary Medicine |
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In the large majority of cases and circumstances, horses benefit from their association with man. However, abuse of horses can occur, due to neglect or through the pressures of competition. The welfare of all animals, including competition horses, has become increasingly topical over the past ten years. Equestrian sport is coming under closer public scrutiny due to reports of apparent abuse. The bodies responsible for regulating these sports strenuously endeavour to protect the welfare of horses which compete under their rules and regulations. The Federation Equestre Internationale (FEI: International Equestrian Federation) is the sole authority for all international events in dressage, show-jumping, three-day event, driving, endurance riding and vaulting. The FEI rules illustrate the ways in which the welfare of competing horses is safeguarded. |
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Federation Equestre Internationale, Lausanne, Switzerland |
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0253-1933 |
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PMID:8173097 |
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Equine Behaviour @ team @ |
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3747 |
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Author |
Bauer, I. E.; McMorrow, J. Yalden,; D. W. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
The Historic Ranges of Three Equid Species in North-East Africa: A Quantitative Comparison of Environmental Tolerances |
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Journal Article |
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Year |
1994 |
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Journal of Biogeography |
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J Biogeogr |
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21 |
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2 |
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169-182 |
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The historic ranges of three equid species native to north-east Africa are analysed with respect to annual rainfall, several temperature parameters and a satellite-derived multispectral index of primary productivity. Equus africanus Fitzinger, Equus grevyi Oustalet and Equus burchelli Gray used to largely replace each other, geographically, with narrow zones of range overlap occurring between E. africanus and E. grevyi in the Awash valley, and between E. grevyi and E. burchelli in southern Ethiopia and northern Kenya. The three species are shown to succeed each other along an environmental gradient. The position of each species on this gradient and the resulting location and extent of its range are discussed. Competitive exclusion, specific adaptations and historic events are likely determinants of equid distribution. In the area of sympatry between E. grevyi and E. burchelli, mixed habitat characters as well as environmental fluctuations seem to prevent either species from excluding the other. Different social organizations of E. grevyi and E. burchelli and the resulting migratory patterns may be adaptations to the environment in their allopatric ranges; in their sympatric range they could alleviate competition. |
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Equine Behaviour @ team @ |
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2222 |
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Author |
Heyes, C.M. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Social learning in animals: categories and mechanisms |
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Journal Article |
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Year |
1994 |
Publication |
Biological reviews of the Cambridge Philosophical Society |
Abbreviated Journal |
Biol. Rev. |
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69 |
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2 |
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207-231 |
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Animals; *Behavior, Animal; Conditioning (Psychology); *Learning; Reinforcement (Psychology); *Social Behavior |
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There has been relatively little research on the psychological mechanisms of social learning. This may be due, in part, to the practice of distinguishing categories of social learning in relation to ill-defined mechanisms (Davis, 1973; Galef, 1988). This practice both makes it difficult to identify empirically examples of different types of social learning, and gives the false impression that the mechanisms responsible for social learning are clearly understood. It has been proposed that social learning phenomena be subsumed within the categorization scheme currently used by investigators of asocial learning. This scheme distinguishes categories of learning according to observable conditions, namely, the type of experience that gives rise to a change in an animal (single stimulus vs. stimulus-stimulus relationship vs. response-reinforcer relationship), and the type of behaviour in which this change is detected (response evocation vs. learnability) (Rescorla, 1988). Specifically, three alignments have been proposed: (i) stimulus enhancement with single stimulus learning, (ii) observational conditioning with stimulus-stimulus learning, or Pavlovian conditioning, and (iii) observational learning with response-reinforcer learning, or instrumental conditioning. If, as the proposed alignments suggest, the conditions of social and asocial learning are the same, there is some reason to believe that the mechanisms underlying the two sets of phenomena are also the same. This is so if one makes the relatively uncontroversial assumption that phenomena which occur under similar conditions tend to be controlled by similar mechanisms. However, the proposed alignments are intended to be a set of hypotheses, rather than conclusions, about the mechanisms of social learning; as a basis for further research in which animal learning theory is applied to social learning. A concerted attempt to apply animal learning theory to social learning, to find out whether the same mechanisms are responsible for social and asocial learning, could lead both to refinements of the general theory, and to a better understanding of the mechanisms of social learning. There are precedents for these positive developments in research applying animal learning theory to food aversion learning (e.g. Domjan, 1983; Rozin & Schull, 1988) and imprinting (e.g. Bolhuis, de Vox & Kruit, 1990; Hollis, ten Cate & Bateson, 1991). Like social learning, these phenomena almost certainly play distinctive roles in the antogeny of adaptive behaviour, and they are customarily regarded as 'special kinds' of learning (Shettleworth, 1993).(ABSTRACT TRUNCATED AT 400 WORDS) |
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Department of Psychology, University College London |
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1464-7931 |
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PMID:8054445 |
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refbase @ user @ |
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708 |
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Author |
Wolff, A.; Hausberger, M. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Behaviour of foals before weaning may have some genetic basis |
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Journal Article |
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1994 |
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Ethology |
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Ethology |
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96 |
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1 |
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1-10 |
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Locomotion; Suckling; Social behavior; Foraging behavior; Exploratory behavior; Interindividual comparison; Young animal; Genetic inheritance; Captivity; Social interaction; Feeding behavior; Perissodactyla; Ungulata; Mammalia; Vertebrata |
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In this preliminary study on foal behaviour, 13 French saddlebred foals (2-3 mo old) and their dams were observed on pasture. The most important findings are the interindividual quantitative differences in foal behaviour patterns as well as in the amount of mainly foal-initiated time spent at given distances from their mares. Interindividual differences seem in part due to a sire effect |
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Equine Behaviour @ team @ |
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5022 |
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