Heat stress effects on livestock: molecular, cellular and metabolic aspects, a review.
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TLDR
It has recently been shown that heat stress disturbs the steady state concentrations of free radicals, resulting in both cellular and mitochondrial oxidative damage.Abstract:
Elevated ambient temperatures affect animal production and welfare. Animal's reduced production performances during heat stress were traditionally thought to result from the decreased feed intake. However, it has recently been shown that heat stress disturbs the steady state concentrations of free radicals, resulting in both cellular and mitochondrial oxidative damage. Indeed, heat stress reorganizes the use of the body resources including fat, protein and energy. Heat stress reduces the metabolic rates and alters post-absorptive metabolism, regardless of the decreased feed intake. Consequently, growth, production, reproduction and health are not priorities any more in the metabolism of heat-stressed animals. The drastic effects of heat stress depend on its duration and severity. This review clearly describes about biochemical, cellular and metabolic changes that occur during thermal stress in farm animals.read more
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Review: Adaptation of animals to heat stress.
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How can heat stress affect chicken meat quality? - a review
TL;DR: The scientific evidence about how heat stress affects the quality of chicken meat through the acid/base status, oxidative reactions, and changes in hormonal secretions is discussed.
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Chronic Heat Stress Impairs the Quality of Breast-Muscle Meat in Broilers by Affecting Redox Status and Energy-Substance Metabolism.
TL;DR: Chronic heat stress impairs meat quality by causing mitochondria to malfunction and affecting energy-substance aerobic metabolism, resulting in increased glycolysis and intramuscular fat deposition.
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Role of Heat Shock Proteins in Livestock Adaptation to Heat Stress
Archana Pr,Joy Aleena,Prathap Pragna,Mallenahally Kusha Vidya,Abdul Niyas Pa,Madiajagan Bagath,Govindan Krishnan,Ayyasamy Manimaran,Beena,Kurien Ek,Sejian,Raghavendra Bhatta +11 more
TL;DR: The present review is an attempt to signify the importance of heat shock proteins in livestock adaptation during heat stress, and HSP70 was identified to be the ideal biological marker for quantifying heat stress in animals.
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Effects of chronic heat exposure on growth performance, intestinal epithelial histology, appetite‐related hormones and genes expression in broilers
TL;DR: Chronic heat exposure impairs the performance, intestinal morphology and appetite, which may be correlated with the increased secretion or gene expression of appetite-related hormones and genes, and the higher expression of nutrient-sensing receptors in broilers.
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