Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus)

Langbein, Jan; Siebert, Katrin; Nuernberg, Gerd

doi:10.1016/j.beproc.2008.07.004

Cited by 33 publications

(27 citation statements)

References 46 publications

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“…Shape discrimination was chosen to assess cognitive function because goats have been shown to excel at this particular cognitive task (Baldwin, ; Blakeman & Friend, ; Langbein et al . , , , ). Additionally, shape discrimination assesses aspects of cognitions such as executive function (Mar et al .…”

Section: Methodsmentioning

confidence: 99%

Ventilatory and integrated physiological responses to chronic hypercapnia in goats

Burgraff

Neumueller

Buchholz

et al. 2018

The Journal of Physiology

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Respiratory diseases such as chronic obstructive pulmonary disease (COPD) often lead to chronic hypercapnia which may exacerbate progression of the disease, increase risk of mortality and contribute to comorbidities such as cognitive dysfunction. Determining the contribution of hypercapnia per se to adaptations in ventilation and cognitive dysfunction within this patient population is complicated by the presence of multiple comorbidities. Herein, we sought to determine the role of chronic hypercapnia per se on the temporal pattern of ventilation and the ventilatory CO /H chemoreflex by exposing healthy goats to either room air or an elevated inspired CO (InCO ) of 6% for 30 days. A second objective was to determine whether chronic hypercapnia per se contributes to cognitive dysfunction. During 30 days of exposure to 6% InCO , steady-state (SS) ventilation ( ) initially increased to 335% of control, and then within 1-5 days decreased and stabilized at ∼230% of control. There was an initial respiratory acidosis that was partially mitigated over time due to increased arterial [HCO ]. There was a transient decrease in the ventilatory CO /H chemoreflex, followed by return to pre-exposure levels. The SS during chronic hypercapnia was greater than predicted from the acute CO /H chemoreflex, suggesting separate mechanisms regulating SS and the chemoreflex. Finally, as assessed by a shape discrimination test, we found a sustained decrease in cognitive function during chronic hypercapnia. We conclude that chronic hypercapnia per se results in: (1) a disconnect between SS and the CO /H chemoreflex, and (2) deterioration of cognitive function.

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Section: Methodsmentioning

confidence: 99%

Ventilatory and integrated physiological responses to chronic hypercapnia in goats

Burgraff

Neumueller

Buchholz

et al. 2018

The Journal of Physiology

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“…Both problems contained the jagged-margin symbol, and performance was lowest in N15 when this symbol was used as the rewarded symbol. We know from the previous studies that dwarf goats possess an outstanding ability to discriminate complex symbols (Langbein et al 2007a(Langbein et al , 2008. However, in these studies, we also found that goats sometimes had diYculties in discriminating or avoiding a speciWc symbol.…”

Section: Transfer Testmentioning

confidence: 48%

“…2a). We have shown that the visual acuity of dwarf goats allows them to discriminate simple and complex symbols on a LCD screen (Langbein et al 2007a(Langbein et al , 2008. A water bowl was attached 20 cm below the screen.…”

Section: Learning Devicementioning

confidence: 99%

The cognitive capabilities of farm animals: categorisation learning in dwarf goats (Capra hircus)

et al. 2012

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The ability to establish categories enables organisms to classify stimuli, objects and events by assessing perceptual, associative or rational similarities and provides the basis for higher cognitive processing. The cognitive capabilities of farm animals are receiving increasing attention in applied ethology, a development driven primarily by scientifically based efforts to improve animal welfare. The present study investigated the learning of perceptual categories in Nigerian dwarf goats (Capra hircus) by using an automated learning device installed in the animals' pen. Thirteen group-housed goats were trained in a closed-economy approach to discriminate artificial two-dimensional symbols presented in a four-choice design. The symbols belonged to two categories: category I, black symbols with an open centre (rewarded) and category II, the same symbols but filled black (unrewarded). One symbol from category I and three different symbols from category II were used to define a discrimination problem. After the training of eight problems, the animals were presented with a transfer series containing the training problems interspersed with completely new problems made from new symbols belonging to the same categories. The results clearly demonstrate that dwarf goats are able to form categories based on similarities in the visual appearance of artificial symbols and to generalise across new symbols. However, the goats had difficulties in discriminating specific symbols. It is probable that perceptual problems caused these difficulties. Nevertheless, the present study suggests that goats housed under farming conditions have well-developed cognitive abilities, including learning of open-ended categories. This result could prove beneficial by facilitating animals' adaptation to housing environments that favour their cognitive capabilities.

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“…There are also some disadvantages of well developed sensory organs, high intelligence level and good memory (Langbein et al, 2008). Goats are difficult to lead as a flock, because of strong individual behaviour.…”

Section: Goatsmentioning

confidence: 99%

“…As a social browser animals, goats are well adapted to the environment not only from nutritional and reproductive point of view, but also due to the development of the sensory organs (Langbein et al, 2008).…”

Section: Goatsmentioning

confidence: 99%

Perception of environment in farm animals – A review

Adamczyk

Górecka-Bruzda

Nowicki

et al. 2015

Annals of Animal Science

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Perception of the environment by farm animals is fundamental for expression of behaviour and of their adaptation to different environmental conditions. from a breeding-environmental perspective, perception becomes increasingly important when a production system negatively impacts on animals such that their normal expression of behaviour is compromised. therefore, research on the perceptual abilities of farm animals is of crucial importance to understand the animalenvironment relationship. this review is focused on research related to sensory perception of farm animals. It should be stressed that the world of animal senses is very difficult to explore, we have limited knowledge of the complexity of the animal's ability to perceive and process environmental stimuli.

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Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus)

Cited by 33 publications

References 46 publications

Ventilatory and integrated physiological responses to chronic hypercapnia in goats

Ventilatory and integrated physiological responses to chronic hypercapnia in goats

The cognitive capabilities of farm animals: categorisation learning in dwarf goats (Capra hircus)

Perception of environment in farm animals – A review

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