Search Results - "Speakman, J.R"

Influence of environmental factors and parity on milk yield dynamics in barn-housed dairy cattle by Marumo, J.L., Lusseau, D., Speakman, J.R., Mackie, M., Hambly, C.

“…We investigated the effects of environmental factors on average daily milk yield and day-to-day variation in milk yield of barn-housed Scottish dairy cows…”
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Daily energy expenditure and water turnover in two breeds of laying hens kept in floor housing by Riek, A., Petow, S., Speakman, J.R., Schrader, L.

“…Laying hens are increasingly kept in barn or free-range systems, which not only allows birds to move freely but also potentially entails higher energy…”
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Behavioural variability, physical activity, rumination time, and milk characteristics of dairy cattle in response to regrouping by Marumo, J.L., Lusseau, D., Speakman, J.R., Mackie, M., Byar, A.Y., Cartwright, W., Hambly, C.

“…•We explored if regrouping had an impact on stress, behaviour and milk production.•Primiparous spent less and multiparous spent more time with others…”
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Oxidative costs of reproduction: Oxidative stress in mice fed standard and low antioxidant diets by Vaanholt, L.M, Milne, A, Zheng, Y, Hambly, C, Mitchell, S.E, Valencak, T.G, Allison, D.B, Speakman, J.R

“…Abstract Lactation is one of the most energetically expensive behaviours, and trade-offs may exist between the energy devoted to it and somatic maintenance,…”
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Factors influencing individual variability in high fat diet-induced weight gain in out-bred MF1 mice by Vaanholt, L.M, Sinclair, R.E, Mitchell, S.E, Speakman, J.R

“…Abstract Easy access to high-energy palatable foods has been suggested to have contributed to the world-wide obesity epidemic. However, within these…”
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Energetic costs of parasitism in the Cape ground squirrel Xerus inauris by Scantlebury, M, Waterman, J.M, Hillegass, M, Speakman, J.R, Bennett, N.C

“…prior to and 217 kJ d…”
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Trade-offs between activity and thermoregulation in a small carnivore, the least weasel Mustela nivalis by Zub, K., Szafra ska, P.A., Konarzewski, M., Redman, P., Speakman, J.R.

“…We studied factors influencing daily energy expenditures (DEE) of male least weasels (…”
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Having it all: historical energy intakes do not generate the anticipated trade-offs in fecundity by Johnston, S.L, Grune, T, Bell, L.M, Murray, S.J, Souter, D.M, Erwin, S.S, Yearsley, J.M, Gordon, I.J, Illius, A.W, Kyriazakis, I, Speakman, J.R

“…An axiom of life-history theory, and fundamental to our understanding of ageing, is that animals must trade-off their allocation of resources since energy and…”
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The energy costs of sexual dimorphism in mole-rats are morphological not behavioural by Scantlebury, M, Speakman, J.R, Bennett, N.C

“…Different reproductive strategies of males and females may lead to the evolution of differences in their energetic costs of reproduction, overall energetic…”
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Feathers as a means of monitoring mercury in seabirds: Insights from stable isotope analysis by Thompson, D.R, Bearhop, S, Speakman, J.R, Furness, R.W

“…Mercury concentrations, together with nitrogen and carbon stable isotope signatures, were determined in body feather samples from northern fulmars Fulmarus…”
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Calories or protein? The effect of dietary restriction on lifespan in rodents is explained by calories alone by Speakman, J.R., Mitchell, S.E., Mazidi, M.

“…Almost exactly 100years ago Osborne and colleagues demonstrated that restricting the food intake of a small number of female rats extended their lifespan. In…”
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Thrifty genes for obesity, an attractive but flawed idea, and an alternative perspective: the 'drifty gene' hypothesis by Speakman, J.R

“…Almost 50 years ago Neel proposed a hypothesis to explain the prevalence of obesity and diabetes in modern society--the 'thrifty gene' hypothesis. The…”
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Energy balance measurement: when something is not better than nothing by Dhurandhar, N V, Schoeller, D, Brown, A W, Heymsfield, S B, Thomas, D, Sørensen, T I A, Speakman, J R, Jeansonne, M, Allison, D B

“…Energy intake (EI) and physical activity energy expenditure (PAEE) are key modifiable determinants of energy balance, traditionally assessed by self-report…”
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Thrifty genes and drifty genes. The evolutionary context of the obesity epidemic by Speakman, J.R.

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Physical activity energy expenditure has not declined since the 1980s and matches energy expenditures of wild mammals by Westerterp, K R, Speakman, J R

“…Objective: Obesity results from protracted energy imbalance. Whether this comprises excessive energy intake, lowered physical activity or both, remains…”
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GWAS for BMI: a treasure trove of fundamental insights into the genetic basis of obesity by Speakman, J. R., Loos, R. J. F., O’Rahilly, S., Hirschhorn, J. N., Allison, D. B.

“…Summary Muller et al. [ 1 ] have provided a strong critique of the Genome-Wide Association Studies (GWAS) of body-mass index (BMI), arguing that the GWAS…”
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Effect of vitamin E supplementation on serum C-reactive protein level: a meta-analysis of randomized controlled trials by Saboori, S, Shab-Bidar, S, Speakman, J R, Yousefi Rad, E, Djafarian, K

“…C-reactive protein (CRP), a marker of chronic inflammation, has a major role in the etiology of chronic disease. Vitamin E may have anti-inflammatory effects…”
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Children's perception on healthy snacks using a card sorting exercise in Aberdeenshire nursery and primary schools by Althubaiti, H., Hambly, C., Mitchell, S.E., Speakman, J.R.

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Inter- and intraindividual correlations of background abundances of ²H, [sup.18]O and [sup.17]O in human urine and implications for DLW measurements by Berman, E.S.F, Melanson, E.L, Swibas, T, Snaith, S.P, Speakman, J.R

“…BACKGROUND/OBJECTIVES: The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This…”
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Testing the carbohydrate insulin model in mice: Erroneous critique does not alter previous conclusion by Speakman, J.R., Hu, S., Togo, J.

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