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Croney, C.C.; Millman, S.T. |
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BOARD-INVITED REVIEW: The ethical and behavioral bases for farm animal welfare legislation |
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2007 |
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Journal of Animal Science |
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J. Anim Sci. |
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85 |
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2 |
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556-565 |
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Concerns about farm animal welfare vary among individuals and societies. As people increasingly consider the values underlying current farm animal production methods, farm animal welfare policy debates have escalated. Recent food animal protection policies enacted in the European Union have fueled highly contentious discussions about the need for similar legislative activity in the United States. Policymakers and scientists in the United States are apprehensive about the scientific assessment, validation, and monitoring of animal welfare, as well as the unforeseen consequences of moving too hastily toward legislating farm animal welfare. The potential impact of such legislation on producers, food prices, animals, and concerned citizens must also be considered. Balancing the interests of all stakeholders has therefore presented a considerable challenge that has stymied US policymaking. In this review, we examine the roles of ethics and science in policy decisions, discuss how scientific knowledge relative to animal behavior has been incorporated into animal welfare policy, and identify opportunities for additional refinement of animal welfare science that may facilitate ethical and policy decisions about animal care. |
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10.2527/jas.2006-422 |
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Equine Behaviour @ team @ |
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2932 |
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Author |
Heyes, C.M. |
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Title |
Imitation, culture and cognition |
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1993 |
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Animal Behaviour. |
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Anim. Behav. |
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46 |
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5 |
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999-1010 |
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Abstract. This paper examines the significance of imitation in non-human animals with respect to the phylogenetic origins of culture and cognitive complexity. It is argued that both imitation (learning about behaviour through nonspecific observation) and social learning (learning about the environment through conspecific observation) can mediate social transmission of information, and that neither is likely to play an important role in supporting behavioural traditions or culture. Current evidence suggests that imitation is unlikely to do this because it does not insulate information from modification through individual learning in the retention period between acquisition and re-transmission. Although insignificant in relation to culture, imitation apparently involves complex and little-understood cognitive operations. It is unique in requiring animals spontaneously to equate extrinsic visual input with proprioceptive and/or kinaesthetic feedback from their own actions, but not in requiring or implicating self-consciousness, representation, metarepresentation or a capacity for goal-directed action. |
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Equine Behaviour @ team @ |
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2920 |
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Duncan, I.J.H.; Petherick, J.C. |
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Proceeding (Paper presented at the Winter Meeting of the Society for Veterinary Ethology, London, Great Britain, 30 November 1988)Cognition: The implications for animal welfare |
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1989 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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24 |
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1 |
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81-1010 |
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Equine Behaviour @ team @ |
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2921 |
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Ristau, C.A. |
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Language, cognition, and awareness in animals? |
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1983 |
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Ann. N.Y. Acad. Sci. |
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406 |
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1 |
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170-186 |
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Equine Behaviour @ team @ |
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2952 |
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Adamo, S.A.; Ehgoetz, K.; Sangster, C.; Whitehorne, I. |
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Signaling to the Enemy? Body Pattern Expression and Its Response to External Cues During Hunting in the Cuttlefish Sepia officinalis (Cephalopoda) |
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2006 |
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Biol. Bull. |
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210 |
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3 |
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192-200 |
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Abstract. Cuttlefish can rapidly alter their appearance by using neurally controlled chromatophore organs. This ability may provide a window into their cognitive capacity. We test whether the changes in body pattern that occur during hunting depend on context. If they do, then it may be possible to use these changes to study cephalopod cognition while the animal is engaged in ecologically relevant tasks. We found consistent individual differences in the tendency of cuttlefish to hunt with the first two arms raised. We also found that cuttlefish usually darken their skin after they seize a prey item. This darkening is observed regardless of the identity of the prey (fish, crab, or shrimp), prey context (buried in sand, in a bare tank, or on top of a rock pile), or the presence of a sudden stimulus. The sudden stimulus was created by presenting an overhead model bird to the cuttlefish. The model induced components of the Deimatic Display, which is a form of antipredator behavior, suggesting that the model was perceived as a potential threat. Passing Cloud displays and the Darkening of the arms were significantly reduced after exposure to the model bird. The effect of a potential predator on body pattern expression during hunting suggests it may be possible to use these changes as a sensitive indicator of ecologically relevant learning. N1 - |
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Equine Behaviour @ team @ |
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2960 |
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Allen, C.; Bekoff, M. |
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Title |
Animal Minds, Cognitive Ethology, and Ethics |
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2007 |
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The Journal of Ethics |
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11 |
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299-317 |
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refbase @ user @ |
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3400 |
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De Lillo,; C. De Lillo; Floreano,; D. Floreano; Antinucci,; F. Antinucci |
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Transitive choices by a simple, fully connected, backpropagation neural network: implications for the comparative study of transitive inference |
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2001 |
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Animal Cognition |
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Anim. Cogn. |
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4 |
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1 |
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61-68 |
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In search of the minimal requirements for transitive reasoning, a simple neural network was trained and tested on the non-verbal version of the conventional “five-term-series task” – a paradigm used with human adults, children and a variety of non-human species. The transitive performance of the network was analogous in several aspects to that reported for children and animals. The three effects usually associated with transitive choices i.e. “symbolic distance”, “lexical marking” and “end-anchor”, were also clearly shown by the neural network. In a second experiment, where the training conditions were manipulated, the network failed to match the behavioural pattern reported for human adults in the test following an ordered presentation of the premises. However, it mimicked young children's performance when tested with a novel comparison term. Although we do not intend to suggest a new model of transitive inference, we conclude, in line with other authors, that a simple error-correcting rule can generate transitive behaviour similar to the choice pattern of children and animals in the binary form of the five-term-series task without requiring high-order logical or paralogical abilities. The analysis of the training history and of the final internal structure of the network reveals the associative strategy employed. However, our results indicate that the scope of the associative strategy used by the network might be limited. The extent to which the conventional five-term-series task, in absence of appropriate manipulations of training and testing conditions, is suitable to detect cognitive differences across species is also discussed on the basis of our results. |
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Equine Behaviour @ team @ |
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3145 |
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Westergaard, G.C.; Liv, C.; Chavanne, T.J.; Suomi, S.J. |
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Token-mediated tool-use by a tufted capuchin monkey (Cebus apella) |
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1998 |
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Animal Cognition |
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Anim. Cogn. |
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1 |
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2 |
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101-106 |
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This research examined token-mediated tool-use in a tufted capuchin monkey (Cebus apella). We conducted five experiments. In experiment 1 we examined the use of plastic color-coded chips to request food, and in experiments 2-5 we examined the use of color-coded chips to request tools. Our subject learned to use chips to request tools following the same general pattern seen in great apes performing analogous tasks, that is, initial discrimination followed by an understanding of the relationship among tokens, tools, and their functions. Our findings are consistent with the view that parallel representational processes underlie the tool-related behavior of capuchins and great apes. |
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Equine Behaviour @ team @ |
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3152 |
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Durier, V.; Rivault, C. |
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Learning and foraging efficiency in German cockroaches, Blattella germanica (L.) (Insecta: Dictyoptera) |
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2000 |
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Animal Cognition |
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Anim. Cogn. |
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3 |
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3 |
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139-145 |
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We analysed, under laboratory test conditions, how German cockroach larvae oriented their outgoing foraging trip from their shelter. Our results stressed the importance of external factors, like availability and spatial distribution of food sources, in the choice of a foraging strategy within their home range. When food sources were randomly distributed, larvae adopted a random food search strategy. When food distribution was spatially predictable and reliable, cockroaches were able to relate the presence of food with a landmark during a 3-day training period and to develop an oriented search strategy. Cockroaches were able to associate learned spatial information about their home range to the presence of food resources and then to improve their foraging efficiency. However, conflict experiments revealed that detection of food odour overrode learned landmark cues. |
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Equine Behaviour @ team @ |
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3203 |
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Cunningham, E.; Janson, C. |
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Integrating information about location and value of resources by white-faced saki monkeys ( Pithecia pithecia ) |
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2007 |
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Animal Cognition |
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Anim. Cogn. |
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10 |
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3 |
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293-304 |
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Abstract Most studies of spatial memory in primates focus on species that inhabit large home ranges and have dispersed, patchy resources. Researchers assume that primates use memory to minimize distances traveled between resources. We investigated the use of spatial memory in a group of six white-faced sakis (Pithecia pithecia) on 12.8-ha Round Island, Guri Lake, Venezuela during a period of fruit abundance. The sakis movements were analyzed with logistic regressions, a predictive computer model and a computer model that simulates movements. We considered all the resources available to the sakis and compared observed distances to predicted distances from a computer model for foragers who know nothing about the location of resources. Surprisingly, the observed distances were four times greater than the predicted distances, suggesting that the sakis passed by a majority of the available fruit trees without feeding. The odds of visiting a food tree, however, were significantly increased if the tree had been visited in the previous 3 days and had more than 100 fruit. The sakis preferred resources were highly productive fruit trees, Capparis trees, and trees with water holes. They traveled efficiently to these sites. The sakis choice of feeding sites indicate that they combined knowledge acquired by repeatedly traveling through their home range with “what” and “where” information gained from individual visits to resources. Although the sakis foraging choices increased the distance they traveled overall, choosing more valued sites allowed the group to minimize intragroup feeding competition, maintain intergroup dominance over important resources, and monitor the state of resources throughout their home range. The sakis foraging decisions appear to have used spatial memory, elements of episodic-like memory and social and nutritional considerations. |
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Equine Behaviour @ team @ |
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3209 |
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