TechFocus_EGGS 0325 - Late-Stage Incubation Temps, Optimisi…

Image 4: Red beak

Image 5: Perfect beak

Image 6: Red hocks

Image 7: Perfect hocks

References Maatjens, C. M., van Roovert-Reijrink, I. A. M., van den Anker, I., Engel, B., van der Pol, C. W., Kemp, B., & van den Brand, H. (2016). Temperature during the last week of incubation. II. Effects on first week broiler development and performance.

2. Adapt to Your Specific Context • Different breeding flocks and egg sets have varying metabolic rates so temperatures will vary • Standard temperature profiles may need adjustment between flocks • Each machine manufacturer has unique ventilation characteristics, affecting the relationship between air and eggshell temperatures • Fine-tune based on your EST measurements rather than following fixed profiles 3. Monitor Quality Indicators and Watch for Stress Signals in Hatch Residue: • Red hocks and beaks • Unabsorbed yolks • Navel quality issues • Elevated late mortality rates • High percentage of dead pipped chicks • Urates • Early hatching chicks Conclusion Late-stage incubation plays a decisive role in broiler performance. By monitoring and maintaining optimal eggshell temperatures (98.5 to 100.0 °F or 36.9 to 37.8 °C) in the hatcher, managers can significantly improve chick quality and reduce common issues like red hocks, increased black button navels and unabsorbed yolk. While this requires careful measurement and fine-tuning, the benefits - including better hatchability, fewer downgrades, and improved broiler performance - it is a worthwhile investment towards success.

Poultry Science, 95(9), 2136–2144. https://doi.org/10.3382/ps/pew145

Sözcu, A., A. İpek, and H. van den Brand. 2022. Eggshell temperature during early and late incubation affects embryo and hatchling development in broiler chicks. Poultry Science. 101:102054. https://doi.org/10.1016/j.psj.2022.102054

About this author Chris Murrell graduated with a degree in Business and Economics and began his career as a Graduate Management Trainee in Breeders and Hatcheries. He has gained valuable experience managing several broiler hatcheries, including the largest hatchery in the UK. For the past seven years, Chris has worked with Cobb Europe, where he has managed Pedigree, GGP, GP, and PS Hatchery operations across Europe. He also supports hatchery teams in the EMEA and Asia regions as a Hatchery Specialist, providing technical guidance and support. In addition to his experience in the poultry industry, Chris holds a Master of Science degree in Computer Science and Data Analysis.