Search Results - "Tolkamp, Bert J"

Measuring motivation for appetitive behaviour: food-restricted broiler breeder chickens cross a water barrier to forage in an area of wood shavings without food by Dixon, Laura M, Brocklehurst, Sarah, Sandilands, Vicky, Bateson, Melissa, Tolkamp, Bert J, D'Eath, Rick B

“…Broiler breeders (parents of meat chickens) are selected for fast growth and become obese if fed ad libitum. To avoid this and maintain good health and…”
Get full text

The temporal structure of feeding behavior by Tolkamp, Bert J, Allcroft, David J, Barrio, Juan P, Bley, Tobias A G, Howie, Jennifer A, Jacobsen, Troels B, Morgan, Colin A, Schweitzer, Diederik P N, Wilkinson, Samantha, Yeates, Martin P, Kyriazakis, Ilias

“…Meals have long been considered relevant units of feeding behavior. Large data sets of feeding behavior of cattle, pigs, chickens, ducks, turkeys, dolphins,…”
Get more information

A Theory of Associating Food Types with Their Postingestive Consequences by Yearsley, Jonathan M., Villalba, Juan J., Gordon, Iain J., Kyriazakis, Ilias, Speakman, John R., Tolkamp, Bert J., Illius, Andrew W., Duncan, Alan J.

“…Animals often face complex and changing food environments. While such environments are challenging, an animal should make an association between a food type…”
Get full text

‘Freedom from hunger’ and preventing obesity: the animal welfare implications of reducing food quantity or quality by D'Eath, Richard B., Tolkamp, Bert J., Kyriazakis, Ilias, Lawrence, Alistair B.

“…In animals, including humans, free access to high-quality (generally energy-dense) food can result in obesity, leading to physiological and health problems…”
Get full text

Do the changes in the behaviours of cattle during parasitism with Ostertagia ostertagi have a potential diagnostic value? by Szyszka, Ollie, Tolkamp, Bert J., Edwards, Sandra A., Kyriazakis, Ilias

“…We investigated the magnitude of temporal changes in activity, posture and feeding behaviour of cattle infected with Ostertagia ostertagi, and their reversal…”
Get full text

Behavioural adaptation to a short or no dry period with associated management in dairy cows by Kok, Akke, van Hoeij, Renny J., Tolkamp, Bert J., Haskell, Marie J., van Knegsel, Ariëtte T.M., de Boer, Imke J.M., Bokkers, Eddie A.M.

“…•Cows had a short or no dry period with associated ration and group changes.•We compared feeding, lying, and steps of cows with no versus a short dry…”
Get full text

Conditioned place preference or aversion as animal welfare assessment tools: Limitations in their application by Dixon, Laura M., Sandilands, Vicky, Bateson, Melissa, Brocklehurst, Sarah, Tolkamp, Bert J., D’Eath, Rick B.

“…Conditioned place preference (CPP) or aversion (CPA) methods are potentially useful tools in animal welfare assessment because they permit measurement of the…”
Get full text

Are cows more likely to lie down the longer they stand? by Tolkamp, Bert J., Haskell, Marie J., Langford, Fritha M., Roberts, David J., Morgan, Colin A.

“…Information on (changes in) standing and lying behaviour of cows can be used for oestrus detection, early diagnosis of disorders and to evaluate welfare…”
Get full text

Quantifying hungry broiler breeder dietary preferences using a closed economy T-maze task by Buckley, Louise A., Sandilands, Victoria, Tolkamp, Bert J., D’Eath, Richard B.

“…This study aimed to identify hungry broiler breeders ( n = 12) preferences for quantitative (control) or qualitative dietary restriction (QDR) in a closed…”
Get full text

Behaviour of food restricted broilers during rearing and lay—effects of an alternative feeding method by Sandilands, Victoria, Tolkamp, Bert J., Kyriazakis, Ilias

“…Broiler breeders are subjected to quantitative food restriction in order to control their growth, and this restriction is particularly severe during rearing…”
Get full text

Consequences of infection pressure and protein nutrition on periparturient resistance to Teladorsagia circumcincta and performance in ewes by Kidane, Alemayehu, Houdijk, Jos G.M., Tolkamp, Bert J., Athanasiadou, Spiridoula, Kyriazakis, Ilias

“…The consequences of protein nutrition on the degree of periparturient relaxation of immunity to nematode parasites in sheep may be more pronounced at higher…”
Get full text

Associations between basal metabolic rate and reproductive performance in C57BL/6J mice by Johnston, Sarah L, Souter, Donna M, Erwin, Susan S, Tolkamp, Bert J, Yearsley, Jonathan M, Gordon, Iain J, Illius, Andrew W, Kyriazakis, Ilias, Speakman, John R

“…Basal metabolic rate (BMR) is highly variable, both between and within species. One hypothesis is that this variation may be linked to the capacity for…”
Get full text

Prandial correlations and the structure of feeding behaviour by Tolkamp, Bert J., Howie, Jennifer A., Bley, Tobias A.G., Kyriazakis, Ilias

“…Prandial correlations measure the strength of the effects of between-meal interval length on the size of subsequent meals (pre-prandial) and vice versa…”
Get full text

Intake Compensates for Resting Metabolic Rate Variation in Female C57BL/6J Mice Fed High-fat Diets by Johnston, Sarah L, Souter, Donna M, Tolkamp, Bert J, Gordon, Iain J, Illius, Andrew W, Kyriazakis, Ilias, Speakman, John R

“…OBJECTIVE: The literature is divided over whether variation in resting metabolic rate (RMR) is related to subsequent obesity. We set out to see whether the…”
Get full text

A novel flexible method to split feeding behaviour into bouts by Howie, Jennifer A., Tolkamp, Bert J., Avendaño, Santiago, Kyriazakis, Ilias

“…Before meal patterns can be analysed properly, a biologically relevant meal criterion must be determined in order to group short-term feeding behaviour into…”
Get full text

Consequences of protein supplementation for anorexia, expression of immunity and plasma leptin concentrations in parasitized ewes of two breeds by Zaralis, Konstantinos, Tolkamp, Bert J., Houdijk, Jos G. M., Wylie, Alastair R. G., Kyriazakis, Ilias

“…The periparturient relaxation of immunity (PPRI) against parasites in ewes has a nutritional basis. We investigated whether ewes experience a reduction in food…”
Get full text

To split behaviour into bouts, log-transform the intervals by TOLKAMP, BERT J., KYRIAZAKIS, ILIAS

“…Analysis of behaviour that is displayed in bouts depends crucially on quantitative estimates of bout criteria, that is, the lengths of the shortest intervals…”
Get full text

Predicting the effects of body fatness on food intake and performance of sheep by Tolkamp, Bert J., Yearsley, Jonathan M., Gordon, Iain J., Illius, Andrew W., Speakman, John R., Kyriazakis, Ilias

“…Adipose tissue produces signals that can have a profound effect on many physiological functions, including energy expenditure and food intake. The hypothesis…”
Get full text

Optimization of short-term animal behaviour and the currency of time by Tolkamp, Bert J, Emmans, Gerry C, Yearsley, Jonathan, Kyriazakis, Ilias

“…Modern ageing theory is based on the observation that oxidative metabolism causes damage that results in a gradual loss of vitality, leading to senescence and…”
Get full text

A life history model of somatic damage associated with resource acquisition: damage protection or prevention? by Yearsley, Jonathan M., Kyriazakis, Ilias, Gordon, Iain J., Johnston, Sarah L., Speakman, John R., Tolkamp, Bert J., Illius, Andrew W.

“…A resource acquisition–allocation model is developed to examine the trade-off between reproduction and somatic protection. Unlike previous studies, resource…”
Get full text