SPRING SUMMER BONUS MAGAZINE 2026

insulation to minimise the heat transferred from the roof into the house. Feeding during cooler parts of the day, such as in early morning, late afternoon, or evening and avoiding feeding during the warmest parts of the day can reduce metabolic heat from digestion. Additional cooling equipment, such as misters/ fans (with good airflow), can significantly reduce house temperatures and lower the chance of hens experiencing heat stress. The best preventative measure remains tracking and monitoring the temperature-humidity index, while having emergency plans in place, including backup power for ventilation equipment. Conclusion With continuously increasing global temperatures, heat stress will be a common problem in layer hen systems. While conditions likely to cause heat stress, such as high www.deheus.co.za | 031 785 1575 | infosa@deheus.com temperatures and high humidity, will only become more common, proactive steps can be taken to prevent this from occurring. Early warning systems and sensors are key to not treating heat stress, but rather preventing it from occurring in the first place. By preventing heat stress from occurring, egg production can be maximised not only in the short term, but also over the productive lifespan of a hen. Key focus points of preventing heat stress are removal of humid and warm air, allowing hens enough spaces so that air can move freely between the hens and management practices that don’t treat heat stress, but reduce the occurrence thereof. Reducing heat stress and its impact on egg production in layer hens is essential for optimal performance. To learnmore, contact your local De Heus technical advisor - https:// www.deheus.co.za/meet-our-team/. Spring/Summer 2026 BONUS www.agribonus.co.za 18