Effect of heat stress on growth and production performance of livestock and poultry: Mechanism to prevention

Yong, Yanhong

doi:10.1016/j.jtherbio.2021.103019

Cited by 48 publications

(34 citation statements)

References 98 publications

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“…Heat-stressed pigs are more prone to enteritis. To dissipate body heat, blood flow from the viscera to the periphery deviates, causing intestinal hypoxia, ATP depletion, and oxidative stress of enterocytes [ 53 ]; this also destabilises the intestinal barrier, making it permeable to Gram-negative bacteria and other disease-causing antigens [ 55 , 56 ]. Under low temperatures, ammonia concentrations within the housing facilities increase, which causes irritation and changes in the respiratory mucosa and leads to respiratory infections [ 57 ], one of the main causes of AMU [ 38 ].…”

Section: Sources Of Stress In Pig Farm Managementmentioning

confidence: 99%

Linking Animal Welfare and Antibiotic Use in Pig Farming—A Review

Albernaz-Gonçalves

Antillón

Hötzel

2022

Animals

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Preventative measures, such as biosecurity and vaccinations, are essential but not sufficient to ensure high standards of health in pig production systems. Restrictive, barren housing and many widely used management practices that cause pain and stress predispose high-performance pigs reared in intensive systems to disease. In this context, antibiotics are used as part of the infrastructure that sustains health and high levels of production in pig farms. Antimicrobial resistance (AMR) is a global emergency affecting human and animal health, and the use of antibiotics (AMU) in intensive livestock farming is considered an important risk factor for the emergence and spread of resistant bacteria from animals to humans. Tackling the issue of AMR demands profound changes in AMU, e.g., reducing their use for prophylaxis and ending it for growth promotion. In support of such recommendations, we revise the link between animal welfare and AMU and argue that it is crucial to sustainably reduce AMU while ensuring that pigs can live happy lives. In support of such recommendations, we aimed to revise the link between animal welfare and AMU in pigs by analysing stress factors related to housing and management and their impact on pig welfare. In particular, we reviewed critical management practices that increase stress and, therefore, pigs’ susceptibility to disease and reduce the quality of life of pigs. We also reviewed some alternatives that can be adopted in pig farms to improve animal welfare and that go beyond the reduction in stress. By minimising environmental and management stressors, pigs can become more immunocompetent and prepared to overcome pathogenic challenges. This outcome can contribute to reducing AMU and the risk of AMR while simultaneously improving the quality of life of pigs and, ultimately, maintaining the pig industry’s social license.

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Section: Sources Of Stress In Pig Farm Managementmentioning

confidence: 99%

Linking Animal Welfare and Antibiotic Use in Pig Farming—A Review

Albernaz-Gonçalves

Antillón

Hötzel

2022

Animals

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“…Heat stress ( HS ) impairs humans and animals’ health, which results in great economic loses in livestock industry and public health care. Moreover, the negative effects of HS will be more obvious with the aggravation of global warming ( Chen et al, 2021 ). It's well known that HS increases reactive oxygen species ( ROS ) formation, which leads to oxidative injury and antioxidant capacity damage ( Song et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Heat stress in broilers of liver injury effects of heat stress on oxidative stress and autophagy in liver of broilers

et al. 2022

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“…Heat stress (HS) is a great challenge for broiler production in tropical and subtropical regions [1]. HS results in a reduction of feed consumption, degradation of growth rate, abnormalities of metabolism, imbalance of electrolytes, and disorders of the endocrine system in broilers [2][3][4][5][6]. As one of the most important digestive organs, the gut is not only the place for digestion and absorption of nutrients, but also plays a crucial role in barrier function, and it is highly sensitive to HS [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Supplementation of Algae-Derived Polysaccharides on Morphology, Tight Junctions, Antioxidant Capacity and Immune Response of Duodenum in Broilers under Heat Stress

Li¹,

Zhu²,

Zhao³

et al. 2021

Animals

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To evaluate the ameliorative effect of algae-derived polysaccharide (ADP) supplementation on duodenal injury caused by heat stress (HS) in broilers, a total of 144 male yellow-feathered broilers (56-day-old) were randomly allocated into three groups: The TN group (thermoneutral zone, broilers were raised at 23.6 ± 1.8 °C); HS group (heat stress, broilers were exposed to 33.2 ± 1.5 °C 10 h/day, 8:00 a.m.–18:00 p.m., the temperature in the remaining period was consistent with the TN group); HSA group (heat-stressed broilers were fed with ADP supplemented diet at 1000 mg/kg). There were six replications in each treatment, and eight broilers in each replication. The feeding trial lasted four weeks. The results showed that dietary ADP supplementation tended to increase the villus height (p = 0.077) and villus width (p = 0.062), and decrease the apoptosis rate (p = 0.081) in the duodenum of broilers under HS. Furthermore, dietary ADP increased the relative mRNA and protein (based on immunofluorescence) expression levels of occludin and zonula occludens-1 (ZO-1) in the duodenum of broilers under HS (p < 0.05). In addition, dietary ADP enhanced the total antioxidation capacity (T-AOC) and activity of glutathione-S transferase (GST), while reducing the malondialdehyde (MDA) concentration of the duodenum in broilers under HS (p < 0.05). Moreover, dietary ADP supplementation upregulated the duodenal nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), glutathione peroxidase 1 (GPx1) and glutathione S-transferase theta 1 (GSTT1) mRNA expression levels in heat-stressed broilers (p < 0.05). Furthermore, compared with the HS group, broilers fed with an ADP supplemented diet had a higher relative mRNA expression of inhibitor kappa B alpha (IκBα) (p < 0.05) and a lower relative mRNA expression of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the duodenum (p < 0.05). In summary, dietary ADP supplementation had an ameliorative effect on HS-induced impairment of tight junctions, antioxidant capacity and the immune response of the duodenum in broilers. These beneficial effects might be related to the modulation of Nrf2 and NF-κB signaling pathways.

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Effect of heat stress on growth and production performance of livestock and poultry: Mechanism to prevention

Cited by 48 publications

References 98 publications

Linking Animal Welfare and Antibiotic Use in Pig Farming—A Review

Linking Animal Welfare and Antibiotic Use in Pig Farming—A Review

Heat stress in broilers of liver injury effects of heat stress on oxidative stress and autophagy in liver of broilers

Effects of Dietary Supplementation of Algae-Derived Polysaccharides on Morphology, Tight Junctions, Antioxidant Capacity and Immune Response of Duodenum in Broilers under Heat Stress

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