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Munksgaard, L.; DePassillé, A.M.; Rushen, J.; Herskin, M.S.; Kristensen, A.M. |
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Title |
Dairy cows' fear of people: social learning, milk yield and behaviour at milking |
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Journal Article |
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Year |
2001 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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73 |
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1 |
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15-26 |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We examined the effects of the presence of an unfamiliar, a gentle or an aversive handler during milking on behaviour and milk yield, and whether cows can learn to approach or avoid a handler by observing the neighbouring cow?s responses. In Experiment 1, Danish Friesian cows (n=16) were treated gently (offering hay and concentrates) by one handler and aversively (hit every 15s on the head with the hand) by another handler for six periods of 2min each. The two handlers wore different coloured overalls, and each cow received either gentle or aversive treatment in the first week and the other treatment the following week. All cows kept a longer distance to the aversive than to the gentle handler in a 1min test after treatment. Milk yield and residual milk did not differ when the aversive or the gentle handler was standing in front of the cow during milking, although the cows moved their legs and tail less when the aversive handler was present. When an unfamiliar person was standing in front of the cows during milking, behaviour and milk yield did not differ from control milkings. Cows and heifers (n=10) that had observed their neighbours receiving gentle treatment by one handler and aversive treatment from another handler did not differ in the distance they kept from these two handlers. In Experiment 2, cows (n=15) that had observed the neighbours receiving a gentle treatment (eight times for 2min) kept a shorter distance to that handler after treatment of their neighbours, and the distance they kept was correlated with the distance kept by the neighbouring cows. This suggests that responses of observer cows may be affected by the responses of the cows being treated. The cows rapidly learned to avoid an aversive handler, but although the cows showed clear avoidance response to the aversive handler there was no effect on milk yield when the aversive handler was present at milking. |
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Elsevier |
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0168-1591 |
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doi: 10.1016/S0168-1591(01)00119-8 |
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Equine Behaviour @ team @ |
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6039 |
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Ward, C.; Smuts, B.B. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Quantity-based judgments in the domestic dog (Canis lupus familiaris) |
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Journal Article |
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2007 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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10 |
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1 |
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71-80 |
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Animals; *Choice Behavior; Dogs; Female; Food; Male; *Size Perception |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We examined the ability of domestic dogs to choose the larger versus smaller quantity of food in two experiments. In experiment 1, we investigated the ability of 29 dogs (results from 18 dogs were used in the data analysis) to discriminate between two quantities of food presented in eight different combinations. Choices were simultaneously presented and visually available at the time of choice. Overall, subjects chose the larger quantity more often than the smaller quantity, but they found numerically close comparisons more difficult. In experiment 2, we tested two dogs from experiment 1 under three conditions. In condition 1, we used similar methods from experiment 1 and tested the dogs multiple times on the eight combinations from experiment 1 plus one additional combination. In conditions 2 and 3, the food was visually unavailable to the subjects at the time of choice, but in condition 2, food choices were viewed simultaneously before being made visually unavailable, and in condition 3, they were viewed successively. In these last two conditions, and especially in condition 3, the dogs had to keep track of quantities mentally in order to choose optimally. Subjects still chose the larger quantity more often than the smaller quantity when the food was not simultaneously visible at the time of choice. Olfactory cues and inadvertent cuing by the experimenter were excluded as mechanisms for choosing larger quantities. The results suggest that, like apes tested on similar tasks, some dogs can form internal representations and make mental comparisons of quantity. |
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Department of Psychology, University of Michigan, 1012 East Hall, 530 Church Street, Ann Arbor, MI 48109-1043, USA. rameses@unich.edu |
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PMID:16941158 |
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Equine Behaviour @ team @ |
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2440 |
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Chaya, L.; Cowan, E.; McGuire, B. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
A note on the relationship between time spent in turnout and behaviour during turnout in horses (Equus caballus) |
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Journal Article |
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2006 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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98 |
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1-2 |
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155-160 |
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Horse; Behaviour; Turnout; Welfare |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We examined if time spent in turnout influenced behaviour during turnout for horses maintained in stalls and given either 2 h/week (n = 7) or 12 h/week (n = 7) of turnout. Horses turned out for 2 h/week were more likely than those turned out for 12 h/week to trot, canter, and buck. Frequency of trotting and cantering was also higher and frequency of grazing lower in horses turned out for 2 h/week. These results have welfare implications and support previous studies showing that horses react to confinement with increased activity when not confined. |
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0168-1591 |
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Equine Behaviour @ team @ |
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4815 |
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Shier, D.M.; Owings, D.H. |
![goto web page (via DOI) doi](img/doi.gif)
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Effects of social learning on predator training and postrelease survival in juvenile black-tailed prairie dogs, Cynomys ludovicianus |
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2007 |
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Animal Behaviour. |
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Anim. Behav. |
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73 |
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4 |
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567-577 |
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antipredator behaviour; black-tailed prairie dog; Cynomys ludovicianus; postrelease survival; predator avoidance; social learning |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We examined how social context and experience affected development of antipredator behaviour and subsequent postrelease survival in the black-tailed prairie dog. Captive-reared juveniles were initially exposed to four stimulus animals: a ferret, a rattlesnake, a hawk and a cottontail control (pretraining tests). Subjects were then trained with or without an adult female demonstrator. Training involved exposure to each stimulus animal two to three times over 5 weeks. After training, each juvenile was retested with each stimulus animal (post-training tests). During pretraining tests, juveniles responded differentially to the stimulus animals. They were least active with the snake, fled the most in tests with the hawk, and were less vigilant with the ferret than with the snake. Following training, juveniles trained with experienced adults were more wary with all three predators than juveniles trained without an experienced adult present. We then compared the antipredator behaviour of captive-reared juveniles trained with experienced adult females with that of wild-reared juveniles of the same age. For all behavioural measures except shelter use, wild-experienced animals differentiated more strongly among predator types than did captive-trained juveniles. One year after reintroduction, survivorship of juveniles trained with experienced adults was higher than that of juveniles trained without experienced adults, but did not differ from that of wild-reared juveniles. These findings provide the first evidence that social transmission of antipredator behaviour during training can enhance long-term survival following release and that as long as a social training regime is used, predator avoidance training can emulate experience acquired in the wild. |
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Equine Behaviour @ team @ |
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4212 |
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Fagot, J.; Kruschke, J.K.; Dépy, D.; Vauclair, J. |
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Associative learning in baboons (Papio papio) and humans (Homo sapiens): species differences in learned attention to visual features |
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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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123-133 |
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We examined attention shifting in baboons and humans during the learning of visual categories. Within a conditional matching-to-sample task, participants of the two species sequentially learned two two-feature categories which shared a common feature. Results showed that humans encoded both features of the initially learned category, but predominantly only the distinctive feature of the subsequently learned category. Although baboons initially encoded both features of the first category, they ultimately retained only the distinctive features of each category. Empirical data from the two species were analyzed with the 1996 ADIT connectionist model of Kruschke. ADIT fits the baboon data when the attentional shift rate is zero, and the human data when the attentional shift rate is not zero. These empirical and modeling results suggest species differences in learned attention to visual features. |
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Equine Behaviour @ team @ |
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3267 |
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Reader, S.M.; Kendal, J.R.; Laland, K.N. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Social learning of foraging sites and escape routes in wild Trinidadian guppies |
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Journal Article |
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2003 |
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Animal Behaviour |
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Anim. Behav. |
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66 |
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4 |
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729-739 |
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We describe two field experiments with wild guppies, Poecilia reticulata, in Trinidad that demonstrated that guppies can acquire foraging and predator escape-response information from conspecifics. In the foraging experiment, subjects were presented with two distinctly marked feeders in their home rivers. One feeder contained a conspecific shoal in a transparent container. Guppies preferred to enter the feeder containing this artificial shoal over the other feeder. In a test phase, the artificial shoal was removed and the feeders replaced at the testing site after a 5-min delay. More guppies entered the feeder that had contained the artificial shoal over the other feeder, a difference that can be explained only by the fish learning the characteristics or location of the feeder during the training phase. We suggest that subjects acquired a foraging patch preference through a propensity to approach feeding conspecifics, a local enhancement process. In the predator escape-response experiment, naive 'observer' guppies could avoid an approaching trawl net by escaping through either a hole to which 'demonstrator' guppies had been trained or through an alternative hole. When the demonstrators were present, the naive observers escaped more often and more rapidly by the demonstrated route than the alternative route. When the demonstrators were removed, observers maintained a route preference according to the training of their demonstrators, which suggests that the observers had learned an escape route through following or observing their more knowledgeable conspecifics. Thus, both experiments reveal that guppies can socially learn in the wild. Copyright 2003 Published by Elsevier Ltd on behalf of The Association for the Study of Animal Behaviour. |
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0003-3472 |
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Equine Behaviour @ team @ |
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6163 |
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Cheney, D.L.; Seyfarth, R.M. |
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Title |
Recognition of other individuals' social relationships by female baboons |
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Journal Article |
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1999 |
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Animal Behaviour. |
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Anim. Behav. |
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58 |
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1 |
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67-75 |
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We describe a series of playback experiments designed to test whether free-ranging baboons, Papio cynocephalus ursinus, recognize the calls of other group members and also associate signallers with their close genetic relatives. Pairs of unrelated females were played sequences of calls that mimicked a fight between their relatives. As controls, the same females heard sequences that involved either (1) only the more dominant female's relative or (2) neither of the females' relatives. When call sequences involved their relatives, subjects looked towards the speaker for a longer duration than when the sequences involved nonkin. When the sequences involved the other female's relative, they also looked towards that female. Subjects did not look towards one another when call sequences involved nonkin. Dominant subjects were more likely to supplant their subordinate partners following playbacks of sequences that mimicked a dispute between their relatives than following the two control trials. In contrast, both subjects were more likely to approach one another and to interact in a friendly manner following the two control trials than following the test trial. Results indicate that female baboons recognize the screams and threat grunts not only of their own close relatives but also of unrelated individuals. They also replicate previous studies in suggesting that female monkeys recognize the close associates of other individuals and adjust their interactions with others according to recent events involving individuals other than themselves. Copyright 1999 The Association for the Study of Animal Behaviour. |
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Departments of Biology and Psychology, University of Pennsylvania |
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0003-3472 |
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PMID:10413542 |
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refbase @ user @ |
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346 |
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Sibbald, A.M.; Elston, D.A.; Smith, D.J.F.; Erhard, H.W. |
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A method for assessing the relative sociability of individuals within groups: an example with grazing sheep |
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2005 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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91 |
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1-2 |
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57-73 |
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Association; Grazing; Nearest neighbour; Sheep; Sociability; Social behaviour |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We describe a method for quantifying relative sociability within a group of animals, which is defined as the tendency to be close to others within the group and based on the identification of nearest neighbours. The method is suitable for groups of animals in which all individuals are visible and identifiable and has application as a tool in other areas of behavioural research. A sociability index (SI) is calculated, which is equivalent to the relative proportion of time that an individual spends as the nearest neighbour of other animals in the group and is scaled to have an expectation of 1.0 under the null hypothesis of random mixing. Associated pairs, which are animals seen as nearest neighbours more often than would be expected by chance, are also identified. The method tests for consistency across a number of independent observation periods, by comparison with values obtained from simulations in which animal identities are randomised between observation periods. An experiment is described in which 8 groups of 7 grazing sheep were each observed for a total of 10, one-hour periods and the identities and distances away of the 3 nearest neighbours of each focal animal recorded at 5-min intervals. Significant within-group differences in SIs were found in four of the groups (P < 0.001). SIs calculated using the nearest neighbour, two nearest neighbours or three nearest neighbours, were generally highly correlated within all groups, with little change in the ranking of animals. There were significant negative correlations between SIs and nearest neighbour distances in five of the groups. It was concluded that there was no advantage in recording more than one neighbour to calculate the SI. Advantages of the SI over other methods for measuring sociability and pair-wise associations are discussed. |
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refbase @ user @ |
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Kacelnik, A.; Houston, A.I. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Some effects of energy costs on foraging strategies |
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1984 |
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Animal Behaviour. |
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Anim. Behav. |
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32 |
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2 |
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609-614 |
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We consider the effect of including energy costs on the optimal strategy for animals exploiting a depleting food resource. In the context of central place foraging this leads to the problem of what load size should be brought back to the central place. Two strategies are discussed: (i) maximize gross rate of energy delivery and (ii) maximize net rate of energy delivery. The optimal load size (or optimal patch time) for net maximizers is not always larger than for gross maximizers, as has been claimed. Instead, the difference in optimal load size has the same sign as the difference between metabolic rates of travelling and foraging. We point out that the influence of costs has not always been correctly incorporated in experimental tests of the theory. |
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Buttelmann, D.; Call, J.; Tomasello, M. |
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Title |
Behavioral cues that great apes use to forage for hidden food |
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Journal Article |
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2007 |
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Animal Cognition |
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Anim. Cogn. |
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Abstract ![sorted by Abstract field, descending order (down)](img/sort_desc.gif) |
We conducted three studies to examine whether the four great ape species (chimpanzees, bonobos, gorillas, and orangutans) are able to use behavioral experimenter-given cues in an object-choice task. In the subsequent experimental conditions subjects were presented with two eggs, one of which contained food and the other did not. In Study 1 the experimenter examined both eggs by smelling or shaking them, but only made a failed attempt to open (via biting) the egg containing food. In a control condition, the experimenter examined and attempted to open both eggs, but in reverse order to control for stimulus enhancement. The apes significantly preferred the egg that was first examined and then bitten, but had no preference in a baseline condition in which there were no cues. In Study 2, we investigated whether the apes could extend this ability to cues not observed in apes so far (i.e., attempting to pull apart the egg), as well as whether they made this discrimination based on the function of the action the experimenter performed. Subjects significantly preferred eggs presented with this novel cue, but did not prefer eggs presented with a novel but functionally irrelevant action. In Study 3, apes did not interpret human actions as cues to food-location when they already knew that the eggs were empty. Thus, great apes were able to use a variety of experimenter-given cues associated with foraging actions to locate hidden food and thereby were partially sensitive to the general purpose underlying these actions. |
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Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany, buttelmann@eva.mpg.de |
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PMID:17534674 |
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Equine Behaviour @ team @ |
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2396 |
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