TECHNICAL Library
Oxidative Stress
Friday, July 9, 2021
Resilient approach to reduce damages from stress and support performance
Animals face every day various kind of stress: change of diet or raw material quality, hot temperature, diseases, handling and manipulations … Stress triggers the production of free reactive radicals in cells which oxidize lipids or proteins.
Wednesday, March 31, 2021
Selenium an important player of an optimized immune system
Farm animals are exposed to xenobiotic such as bacteria, viruses, parasites and toxic substances. The natural barriers including skin, intestinal or respiratory mucous membranes, are the first line of defense to deal with these external aggressions. However, these barriers often do not prevent for those xenobiotics to ...
Wednesday, March 24, 2021
Oxidative stress - a key indicator in animal stress
Animals experience many situations of stress in their natural environment. This stress can be caused, amongst others, by conflict with group members, water and food shortages, injuries and challenging weather conditions or parasite densities. The term "stress" is widely used to describe a set of physiological and behav ...
Wednesday, March 24, 2021
Radical response effects of heat stress-induced oxidative stress on lipid metabolism in the avian liver
Lipid metabolism in avian species places unique demands on the liver in comparison to most mammals. The avian liver synthesizes the vast majority of fatty acids that provide energy and support cell membrane synthesis throughout the bird. Egg production intensifies demands to the liver as hepatic lipids are needed to cr ...
Wednesday, March 24, 2021
Association between heat stress and oxidative stress in poultry; mitochondrial dysfunction and dietary interventions with phytochemicals
Heat as a stressor of poultry has been studied extensively for many decades; it affects poultry production on a worldwide basis and has significant impact on well-being and production. More recently, the involvement of heat stress in inducing oxidative stress has received much interest. Oxidative stress is defined as t ...
Wednesday, March 17, 2021
Effects of age and weaning conditions on blood indicators of oxidative status in pigs
Weaning is a source of social, nutritional and environmental disorders that challenge piglet health. This study assesses the relevance of using plasma indicators of oxidative status as biomarkers of health around weaning in pigs.
Wednesday, March 17, 2021
Antioxidant defence systems and oxidative stress in poultry biology: An update
Poultry in commercial settings are exposed to a range of stressors. A growing body of information clearly indicates that excess ROS/RNS production and oxidative stress are major detrimental consequences of the most common commercial stressors in poultry production.
Wednesday, March 17, 2021
Hydroxy Selenomethionine: an answer to oxidative stress in broilers
Heat stress is one of the most important stressors affecting poultry, especially in the hot regions of the world, and is a major contributor to growth restriction. It has been suggested that modern broiler breeds be more susceptible to heat stress than earlier genotypes.
Wednesday, March 3, 2021
Role of organic Se in sustaining egg production in aged laying hens under heat stress
Under heat-stress conditions (i.e. high temperature and humidity) and as the hen ages, oxidative stress increases due to the synthesis of reactive oxygen species (ROS). When the hen is unable to neutralize the various ROS molecules that are generated, the hen's normal metabolism, physiology and production performa ...
Wednesday, March 3, 2021
Revisiting oxidative stress and the use of organic selenium in dairy cow nutrition
Among feed-derived antioxidants, selenium (Se) was shown to have a special place as an essential part of 25 selenoproteins identified in animals. Organic Se, in the form of selenomethionine (SeMet), has been reported to be a much more effective Se source when compared with mineral forms such as sodium selenite or selen ...
Wednesday, March 3, 2021
Oxidative stress in the poultry gut: Potential challenges and interventions
The gastrointestinal tract (GIT) provides the biological environment for nutrient digestion and absorption, and protection from pathogens and toxins. Broilers are fast growing because of the great potential of intestinal epithelia for nutrient absorption, and efficient conversion of nutrient to muscle.
Friday, September 25, 2020
Induction of oxidative stress by myco- and endotoxins
Mycotoxins and endotoxins are naturally occuring toxins that pose a serious threat to animal production due to their negative impact on animal performance and health. Many negative effects are linked to their capacity to induce oxidative stress.
Monday, September 14, 2020
Effects of dietary tributyrin on intestinal mucosa development, mitochondrial function and AMTK-mTOR pathway in weaned pigs
Piglets are often subjected to nutritional, physiological and immunological stresses during the weaning process. It has been determined that weaning can quickly lead to the intestinal-mucosal injury, such as villus atrophy and crypt hyperplasia and further impair intestinal absorption function. Butyrate, as a SCFA (sho ...
Thursday, May 28, 2020
Heat stress in poultry
Stress in animals can be defined as any factor causing disruptions to their homeostasis, their stable internal balance. Stress engenders a biological response to regain equilibrium (1). We can distinguish four major types of stress in the poultry industry: technological or management-related stress; environmental stres ...
Thursday, April 12, 2018
Vitamin E and Se: does 1+1 equal more than 2?
It is well known that animal/poultry production is associated with a range of stresses, including environmental (high or low temperature, dust, not optimal humidity, etc.), technological (bird placement, vaccination, grading, transfer and transportation, etc.), nutritional (mycotoxins, oxidized fat, diet changes, etc.) ...
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