Poultry Heat Stress: Is Your Flock Prepared for Rising Temperatures?

Written by Zamira Australia

Heat stress isn’t just a hot topic—it’s an urgent issue commanding our focus in the livestock sector. With billions of dollars lost each year globally, the economic impact of heat stress reverberates throughout every aspect of livestock production. From growth and reproduction to immune health, the repercussions are profound, posing a significant threat to the livelihoods of producers worldwide.

Preventing heat stress in poultry requires a multifaceted approach

Regular monitoring for early detection of signs of heat stress allows for timely intervention, ensuring the wellbeing and productivity of the poultry flock. Adequate ventilation and access to clean water are essential for maintaining comfortable temperatures and hydration levels. Providing shade and shelter, along with proper nutritional management, supports birds in coping with heat. Environmental control systems like fans and misters help regulate ambient temperatures, while effective management practices and minimising stressors contribute to mitigating heat stress.

Temperature Red Flags: Recognising Signs of Heat Overload in Poultry

Livestock possess remarkable adaptive mechanisms to combat heat stress, but these efforts often come at a cost to productivity. Increased panting, sweating, and lack of coordination are tell-tale signs of heat stress, signalling the animal’s struggle to cope with rising temperatures.

Unveiling the Damage: The Impact of Heat Stress on Livestock Growth, Reproduction and Health

Heat stress compounds existing challenges, exacerbating factors such as poor water quality and inadequate shading. The consequences are dire—reduced feed intake, impaired reproductive efficiency, and heightened susceptibility to diseases. Livestock may exhibit changes in behaviour, and in severe cases, succumb to heat-related mortality.

Heat Stress Hydration: Strategies for Survival

Maintaining adequate hydration is paramount during heat stress episodes. Water, not just a vital nutrient, serves as a crucial tool for dissipating heat and regulating body temperature. However, water availability and quality can pose significant challenges, impacting livestock performance and overall welfare.

Empowering Poultry Resilience – Navigating the Heat Wave

Products containing selenium yeast and Bacillus probiotics offer vital support in combating heat stress in poultry. Selenium yeast aids in bolstering avian resilience against oxidative stress linked to high temperatures. Bacillus probiotics enhance intestinal health and maintain normal villi in heat stressed hens. Together, these components contribute to improving overall immune function and supporting the birds’ ability to withstand the challenges posed by heat stress. Their combined action not only helps in managing the immediate effects of heat stress but also promotes long-term resilience and wellbeing in poultry.

ZamiBoost Selenium Yeast: Your Solution for Optimal Hydration

Zamira Australia’s ZamiBoost Selenium Yeast represents the pinnacle of organic selenium production, cultivated through submerged fermentation of Saccharomyces cerevisiae in a selenium-rich medium. Research has consistently demonstrated the benefits and advantages of this product when managing heat stress in poultry:

  • Enhanced Resistance: Selenium yeast supplementation bolsters avian resilience against oxidative stress linked with enteric bacterial infection and exposure to elevated temperatures.
  • Improved Performance: Chickens supplemented with selenium experience increased growth performance, boosted antioxidant capacity, and improved immunity, particularly in environments marked by high temperatures. 
  • Enhanced Accessibility: Organic selenium forms, such as selenium enriched yeast, are readily absorbed by birds, surpassing the bioavailability of inorganic variants.
  • Superior Deposition: Birds fed with selenium-enriched yeast showcase superior selenium deposition and heightened antioxidant capacity when compared to alternative selenium sources.

Incorporate ZamiBoost Selenium Yeast to elevate the health and vitality of your poultry, helping them thrive in every aspect of their development.

Discover the Impact of ZamiPro-SL Against Heat Stress

Highly susceptible to heat stress, poultry encounter elevated risks of mortality and decreased productivity. Zamira Australia’s ZamiPro-SL presents a potent solution, with its high concentration probiotic formulation featuring selected strains of Bacillus subtilis and Bacillus licheniformis. It effectively fortifies heat tolerance while enhancing growth rates and egg quality.

ZamiPro-SL functions by enhancing intestinal health and mitigating the effects of diarrhea, thereby fostering improvements in Average Daily Gain (ADG) and Feed Conversion Ratio (FCR) in broiler chickens and laying hens alike. Moreover, it remains stable in mineral, pelleted, and mash feeds.

Bacillus licheniformis may reverse the impaired villus-crypt structure of heat-stressed birds by modulating the corticosterone level and reducing proinflammatory agents that can cause intestinal tissue injuries and permeability issues of the intestine.

Bacillus subtilis is known to maintain normal levels of cholesterol and glucose under heat stress conditions. Research has also shown that broilers fed Bacillus subtilis supplementation under heat stress conditions result in higher skeletal muscles size, improved tibia traits and lower abdominal fat pads deposition.


In the battle against heat stress, proactive measures are essential. With innovative solutions and strategic interventions, Zamira Australia can help safeguard the wellbeing of your livestock. 


Zamira is an Australian animal health company with a mission to improve the health, wellbeing and productivity through detection, prevention and treatment. Read more about us here.

How can we help you?

Want to find out more about how to prevent and manage heat stress in your flock? Zamira Australia has teams in Australia, South East Asia and South Asia who can work with you on a tailored solution to meet your needs. Fill out the form below and we’ll get in touch with you shortly.

  • This field is for validation purposes and should be left unchanged.

Related Products


References

  1. Mahmoud, Kamel Z., and F. W. Edens. “Influence of organic selenium on hsp70 response of heat-stressed and enteropathogenic Escherichia coli-challenged broiler chickens (Gallus gallus).” Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology 141.1 (2005): 69-75.
  2. Safiullah CN, Khan RU, Naz S, Ahmad M, Gul S. 2019. Effect of ginger (Zingiber officinale Roscoe) and organic selenium on growth dynamics, blood melanodialdehyde and paraoxonase in broilers exposed to heat stress. J Appl Anim Res, 47(1): 212–216. doi:10.1080/09712119.2019.1608211.
  3. Gul F, Ahmad B, Afzal S, Ullah A, Khan S, Aman K, Khan MT, Hadi F, Kiran K, Zahra M, et al. 2021. Comparative analysis of various sources of selenium on the growth performance and antioxidant status in broilers under heat stress. Braz J Biol. 83():e251004. doi:10.1590/1519-6984.251004.
  4. Sugiharto, S., Yudiarti, T., Isroli, I., Widiastuti, E., & Kusumanti, E. (2017). Dietary supplementation of probiotics in poultry exposed to heat stress–a review. Annals of animal science17(4), 591-604.
  5. Deng, W., Dong, X. F., Tong, J. M., & Zhang, Q. (2012). The probiotic Bacillus licheniformis ameliorates heat stress-induced impairment of egg production, gut morphology, and intestinal mucosal immunity in laying hens. Poultry science, 91(3), 575-582.
  6. Abdelqader, A., Abuajamieh, M., Hayajneh, F., & Al-Fataftah, A. R. (2020). Probiotic bacteria maintain normal growth mechanisms of heat stressed broiler chickens. Journal of Thermal Biology, 92, 102654.

Latest Blog Posts

Subscribe to our mailing list to receive product updates.