نتایج جستجو برای: food availability

تعداد نتایج: 406003  

Journal: :The Journal of experimental biology 2015
Shelley Valle Elodie Carpentier Bethany Vu Kazuyoshi Tsutsui Pierre Deviche

Nutrition influences reproductive functions across vertebrates, but the effects of food availability on the functioning of the hypothalamic-pituitary-gonadal (HPG) axis in wild birds and the mechanisms mediating these effects remain unclear. We investigated the influence of chronic food restriction on the HPG axis of photostimulated house finches, Haemorhous mexicanus. Food-restricted birds had...

2014
Michelle Murphy Julian G. Mercer

Food availability and associated sensory cues such as olfaction are known to trigger a range of hormonal and behavioural responses. When food availability is predictable these physiological and behavioural responses can become entrained to set times and occur in anticipation of food rather than being dependent on the food-related cues. Here we summarise the range of physiological and behavioura...

Journal: :The Proceedings of the Nutrition Society 2002
Antonia Trichopoulou Androniki Naska Tina Costacou

Socially-and culturally-patterned differences in food habits exist both between and within European populations. Daily individual food availability data, collected through the national household budget surveys (HBS) and harmonized in the context of the Data Food Networking (DAFNE) project, were used to assess disparities in food habits of seven European populations and to evaluate dietary chang...

Journal: :Canadian journal of public health = Revue canadienne de sante publique 2012
Jennifer L Black Meghan Day

OBJECTIVE The purpose of this study was to provide a descriptive profile of the availability of limited service food outlets surrounding public schools in British Columbia, Canada. METHODS Data from the 2010 Canadian Business Data Files were used to identify limited service food outlets including fast food outlets, beverage and snack food stores, delis and convenience stores. The number of fo...

Journal: :Public health nutrition 2000
A J Donkin E A Dowler S J Stevenson S A Turner

OBJECTIVE To develop and map indices to illustrate variation in the cost and availability of healthy food. DESIGN Two contiguous wards in London were selected by virtue of their high Carstairs deprivation scores. A 2-km area was defined around a randomly chosen central point. All retail outlets selling food within the area were visited and their location recorded. A list of foods, acceptable ...

2017
Yang Wang Zhi-Gao Zeng Liang Ma Shu-Ran Li Wei-Guo Du

Food availability significantly affects an animal's energy metabolism, and thus its phenotype, survival, and reproduction. Maternal and offspring responses to food conditions are critical for understanding population dynamics and life-history evolution of a species. In this study, we conducted food manipulation experiments in field enclosures to identify the effect of food restriction on female...

Journal: :Public health nutrition 2007
Rafael Balanza Pilar García-Lorda Carmen Pérez-Rodrigo Javier Aranceta Mònica Bulló Bonet Jordi Salas-Salvadó

OBJECTIVE The aims of this study were to assess the changes that have occurred in food patterns in Europe over the last 40 years based on food availability data and to compare the stability of the traditional Mediterranean diet in the south of Europe in this period. DESIGN An ecological study carried out on the basis of Food and Agriculture Organization food balance sheets for three geographi...

In recent years, Nigeria witnessed significant labour migration coupled with reduction in rural agricultural productivity. Youths abandoned farms for ventures with high returns and less drudgery in cities thus labour availability in peak agricultural seasons became scarce. The declining farm population constituting mostly women and old men are not capable of producing sufficient food for the no...

Journal: :Public health nutrition 2008
J Nicholas Bodor Donald Rose Thomas A Farley Christopher Swalm Susanne K Scott

OBJECTIVE Previous studies on the relationship of dietary intake to the neighbourhood food environment have focused on access to supermarkets, quantified by geographic distance or store concentration measures. However, in-store food availability may also be an important determinant, particularly for urban neighbourhoods with a greater concentration of small food stores. This study synthesises b...

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