WINTER BONUS MAGAZINE 2026

0.00 VALID WHILE STOCKS LAS Investigating the disincentive effect of cost- cutting strategies on heating systems in broiler farming beyond 21 days Mlungisi Gwala – Technical Advisor: Poultry Broiler farming plays a critical role inmeeting the growing global demand for poultry meat. As production costs continue to rise, farmers are increasingly adopting cost-cutting strategies tomaintain profitability. One of the most common areas where cost reductions occur is in heating systems, particularly after broilers reach 21 days of age. A common thought is that birds have fully developed feathers, so heating systems can be switched off to save on energy costs. Without any doubt, birds becomemore tolerant of cooler temperatures as they grow; however, withdrawing or reducing heat too early can negatively affect bird welfare, performance, and overall farm profitability. This article discusses the importance of maintaining proper heating systems beyond 21 days in broiler production. It explores environmental requirements throughout the broiler growth cycle, the risks associated with premature heat withdrawal, and the impact on litter quality, growth performance, mortality, and feed conversion ratio (FCR). Furthermore, the article highlights practical strategies farmers can implement to balance cost-cutting measures while maintaining optimal bird welfare and productivity. 1. Environmental requirements and temperature management in broilers Maintaining optimal environmental conditions throughout the broiler growth cycle is essential for achieving good performance, welfare, and profitability. Temperature, humidity, and carbon dioxide levels must be carefully managed from placement to market age. The table below provides generic guidance on environmental conditions from day 0 to day 42. Age (days) Temperature ( o C) Relative humidity (RH%) CO2 levels (ppm) 0 to 7 34,0 to 31,5 55–65 2 500–3 000 8 to 14 31,5 to 28,0 50–60 2 000–2 500 15 to 21 29,5 to 28,0 50–60 1 000–1 500 22 to 28 28,0 to 26,0 40–50 800–1 000 29 to 35 26,0 to 24,0 40–50 800–1 000 36 to 42 24,0 to 22,0 40–50 800–1 000 Table 1: Temperature and relative humidity guide www.agribonus.co.za Winter 2026 BONUS 63