نتایج جستجو برای: chronic heat stress

تعداد نتایج: 1086354  

2016
Yanjun Cui Yue Hao Jielei Li Weiguang Bao Gan Li Yanli Gao Xianhong Gu

Heat stress (HS) negatively affects human health, animal welfare, and livestock production. We analyzed the hepatic proteomes of finishing pigs subjected to chronic heat stress (HS), thermal neutral (TN), and restricted feed intake conditions, identifying differences between direct and indirect (via reduced feed intake) HS. Twenty-four castrated male pigs were randomly allocated to three treatm...

2017
Karoline Pieritz Sarina J Schäfer Jana Strahler Winfried Rief Frank Euteneuer

BACKGROUND Experiences of social pain due to social exclusion may be processed in similar neural systems that process experiences of physical pain. The present study aimed to extend the findings on social exclusion and pain by examining the impact of social exclusion on an affective (ie, heat pain tolerance) and a sensory component of pain (ie, heat pain intensity). Whether a potential effect m...

A. Golian A. Hassanabadi, H. Hajati, H. Nassiri-Moghaddam M.R. Nassiri

The effect of grape seed extract (GSE) feed supplementation on performance, antioxidant enzyme activity, and immune responses in broiler chickens suffering from heat stress were investigated in this study. Experimental diets including control diet (with no additive), 3 levels of GSE (150, 300, 450 mg/kg), and one level of vitamin C (300 mg/kg) as a positive control were fed to the birds from 1 ...

ژورنال: طب کار 2016
امیدی, لیلا, بشاش, داوود, جعفری, محمد جواد, خداکریم, سهیلا, عبداللهی, محمد باقر, نورلویی, سحر,

Introduction: Heat-related diseases are common disorders in many industries. Heat stress can cause changes in the secretion of some plasma hormones. The aim of this study was to determine the effects of heat stress on concentrations of serum triiodothyronine (T3) and thyroxine (T4) hormones among foundry workers. Methods: This cross sectional study was carried out with 35 workers of a foundr...

Journal: :تحقیقات نظام سلامت 0

background: pastry occupation is one of occupations to exposure with heat and significant number of workers works at it. this study is aimed to heat stress and heat strain score index assessment in the pastry workers of isfahan.   methods: this cross sectional and descriptive study was conducted on 360 pastry workers between 10 and 14 hours in the summer of 2012. wbgt index was used for determi...

2014
Sandra I Rosado Montilla Theresa P Johnson Sarah C Pearce Delphine Gardan-Salmon Nicholas K Gabler Jason W Ross Robert P Rhoads Lance H Baumgard Steven M Lonergan Joshua T Selsby

Heat stress is associated with death and other maladaptions including muscle dysfunction and impaired growth across species. Despite this common observation, the molecular effects leading to these pathologic changes remain unclear. The purpose of this study was to determine the extent to which heat stress disrupted redox balance and initiated an inflammatory response in oxidative and glycolytic...

Journal: :The Onderstepoort journal of veterinary research 2000
J H Du Preez

Not all parameters are trustworthy and practical to use as parameters to determine heat stress in dairy cattle. The temperature-humidity index (THI) is still the best, simplest and most practical index (parameter) for measurement of environmental warmth which cause heat stress in dairy cattle. It is practical, easy to determine and relatively trustworthy to use body temperature and respiratory ...

2014
Rakesh Kumar Sinha

Background: It is well understood that the high environmental heat significantly affects the brain physiology of mammals, particularly the sleep and behavior of the subjects. The objective of the present work is to quantify the effects of acclimatization to the high environmental heat on sleep and behavioral activities in heat stress conditions. Methods: The polygraphic data involved simultaneo...

تیرگر, آرام, حاجی احمدی, محمود, حسینی, سید رضا, شیرویه, ارسلان,

Introduction: Workers employed in outdoor occupations such as farm working, especially during rice harvest, are exposed to hot and humid environments that put them at risk for different kinds of heat-related disorders or heat stress. The aim of this study was to determine the susceptibility to heat-related disorders and prevention methods among a group of agriculture workers in one of the north...

Journal: :F1000Research 2016
Isabel Bäurle

Abiotic stress is a major threat to crop yield stability. Plants can be primed by heat stress, which enables them to subsequently survive temperatures that are lethal to a plant in the naïve state. This is a rapid response that has been known for many years and that is highly conserved across kingdoms. Interestingly, recent studies in Arabidopsis and rice show that this thermo-priming lasts for...

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