Using major genes to mitigate the deleterious effects of heat stress in poultry: an updated review

Fathi, M. M.; Galal, A.; Radwan, Lamiaa M.; Abou-Emera, Osama; Al-Homidan, Ibrahim

doi:10.1016/j.psj.2022.102157

Cited by 12 publications

(9 citation statements)

References 83 publications

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“…They offer a practical, sustainable and cost‐effective solution to the heat stress challenge (Goel, 2021 ). Utilizing beneficial heat‐resistant genes such as frizzle (F) and naked neck (Na) might increase heat tolerance, growth performance and reproductive qualities in chickens (Fathi et al., 2022 ; Lin et al., 2006 ). Breeding for slower growth that will be more adapted to warmer temperatures could be beneficial.…”

Section: Adaptation Strategies For Sustainable Broiler Production In ...mentioning

confidence: 99%

Climate change and broiler production

Oke,

Akosile,

Uyanga

et al. 2024

Veterinary Medicine & Sci

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Climate change has emerged as a significant occurrence that adversely affects broiler production, especially in tropical climates. Broiler chickens, bred for rapid growth and high meat production, rely heavily on optimal environmental conditions to achieve their genetic potential. However, climate change disrupts these conditions and poses numerous challenges for broiler production. One of the primary impacts of climate change on broiler production is the decreased ability of birds to attain their genetic potential for faster growth. Broilers are bred to possess specific genetic traits that enable them to grow rapidly and efficiently convert feed into meat. However, in tropical climates affected by climate change, the consequent rise in daily temperatures, increased humidity and altered precipitation patterns create an unfavourable environment for broilers. These conditions impede their growth and development, preventing them from reaching their maximum genetic influence, which is crucial for achieving desirable production outcomes. Furthermore, climate change exacerbates the existing challenges faced by broiler production systems. Higher feed costs impact the industry's economic viability and limit the availability of quality nutrition for the birds, further hampering their growth potential. In addition to feed scarcity, climate change also predisposes broiler chickens to thermal stress. This review collates existing information on climate change and its impact on broiler production, including nutrition, immune function, health and disease susceptibility. It also summarizes the challenges of broiler production under hot and humid climate conditions with different approaches to ameliorating the effects of harsh climatic conditions in poultry.

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Section: Adaptation Strategies For Sustainable Broiler Production In ...mentioning

confidence: 99%

Climate change and broiler production

Oke,

Akosile,

Uyanga

et al. 2024

Veterinary Medicine & Sci

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“…The slow feathering (K) gene has been extensively used to ‘auto‐sex’ strain and breed crosses have an effect on increased heat loss during early growth, all of which may assist the bird in resisting HS (Tixier‐Boichard et al, 1989). Chickens with such genetic mutations due to their high production performance, adaptability, survivability and hatchability under HS (Fathi et al, 2022).…”

Section: Genetic Selectionmentioning

confidence: 99%

Strategies to combat heat stress in poultry production—A review

Mangan,

Siwek

2023

Animal Physiology Nutrition

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The effects of heat stress (HS) caused by high temperatures continue to be a global concern in poultry production. Poultry birds are homoeothermic, however, modern‐day chickens are highly susceptible to HS due to their inefficiency in dissipating heat from their body due to the lack of sweat glands. During HS, the heat load is higher than the chickens' ability to regulate it. This can disturb normal physiological functioning, affect metabolism and cause behavioural changes, respiratory alkalosis and immune dysregulation in birds. These adverse effects cause gut dysbiosis and, therefore, reduce nutrient absorption and energy metabolism. This consequently reduces production performances and causes economic losses. Several strategies have been explored to combat the effects of HS. These include environmentally controlled houses, provision of clean cold water, low stocking density, supplementation of appropriate feed additives, dual and restricted feeding regimes, early heat conditioning and genetic selection of poultry lines to produce heat‐resistant birds. Despite all these efforts, HS still remains a challenge in the poultry sector. Therefore, there is a need to explore effective strategies to address this long‐lasting problem. The most recent strategy to ameliorate HS in poultry is early perinatal programming using the in ovo technology. Such an approach seems particularly justified in broilers because chick embryo development (21 days) equals half of the chickens' posthatch lifespan (42 days). As such, this strategy is expected to be more efficient and cost‐effective to mitigate the effects of HS on poultry and improve the performance and health of birds. Therefore, this review discusses the impact of HS on poultry, the advantages and limitations of the different strategies. Finally recommend a promising strategy that could be efficient in ameliorating the adverse effects of HS in poultry.

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“…They offer a practical, sustainable, and cost-effective solution to the heat stress challenge ( 92 ). Utilizing beneficial heat-resistant genes such as slow feathering (K), frizzle (F) and naked neck (Na) might increase heat tolerance, growth performance, and reproductive qualities in chickens ( 7 , 93 , 94 ).…”

Section: Introductionmentioning

confidence: 99%

“…When compared to hens with normal plumage, homozygous chickens with the naked neck gene (Na) have roughly 40% less feather coverage, and heterozygous siblings have between 20 and 30% less ( 93 , 94 ). When exposed to high ambient temperatures, the reduced plumage allows them to dissipate heat ( 95 , 96 ).…”

Section: Introductionmentioning

confidence: 99%

“…Another gene that could be targeted for producing heat-tolerant chickens is the frizzle gene. The frizzle gene (F) is a partially dominant gene that decreases feather intensity, thereby increasing the excessive heat-dissipating ability of birds ( 94 ). According to Lin et al ( 7 ) and Wasti et al ( 33 ), the frizzle (F) gene causes the shape of the feather to curve, which reduces the feather’s weight and boosts heat emission from the body.…”

Section: Introductionmentioning

confidence: 99%

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Alleviating heat stress effects in poultry: updates on methods and mechanisms of actions

Onagbesan,

Uyanga,

Oso

et al. 2023

Front. Vet. Sci.

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Heat stress is a threat that can lead to significant financial losses in the production of poultry in the world’s tropical and arid regions. The degree of heat stress (mild, moderate, severe) experienced by poultry depends mainly on thermal radiation, humidity, the animal’s thermoregulatory ability, metabolic rate, age, intensity, and duration of the heat stress. Contemporary commercial broiler chickens have a rapid metabolism, which makes them produce higher heat and be prone to heat stress. The negative effect of heat stress on poultry birds’ physiology, health, production, welfare, and behaviors are reviewed in detail in this work. The appropriate mitigation strategies for heat stress in poultry are equally explored in this review. Interestingly, each of these strategies finds its applicability at different stages of a poultry’s lifecycle. For instance, gene mapping prior to breeding and genetic selection during breeding are promising tools for developing heat-resistant breeds. Thermal conditioning during embryonic development or early life enhances the ability of birds to tolerate heat during their adult life. Nutritional management such as dietary manipulations, nighttime feeding, and wet feeding often, applied with timely and effective correction of environmental conditions have been proven to ameliorate the effect of heat stress in chicks and adult birds. As long as the climatic crises persist, heat stress may continue to require considerable attention; thus, it is imperative to explore the current happenings and pay attention to the future trajectory of heat stress effects on poultry production.

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Using major genes to mitigate the deleterious effects of heat stress in poultry: an updated review

Cited by 12 publications

References 83 publications

Climate change and broiler production

Climate change and broiler production

Strategies to combat heat stress in poultry production—A review

Alleviating heat stress effects in poultry: updates on methods and mechanisms of actions

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