HOUSING SYSTEMS BIOSECURITY HOUSING & BROODING EARLY MANAGEMENT LIGHTING NUTRITION HEALTH HATCHING EGG MANAGEMENT 101 101 LOHMANN › MANAGEMENT GUIDE OPTIMAL-SIZED EGGS 51–64 g OVERSIZED EGGS > 64 g UNDERWEIGHT EGGS < 50 g Tend to have lower hatch rates, poorer chick quality, and higher mortality rates. Optimal target weight for hatching eggs, depending on the flock's age. May present incubation challenges. UNIFORMITY AND EGGSHELL QUALITY Uniformity is essential for dedicated and specific incubation programmes to achieve optimal hatchability and chick quality. To ensure this, it is crucial to maintain a uniform parent stock flock, where hens produce eggs of consistent size and roosters ensure a high fertility rate. EGGSHELL 8 –10% ALBUMEN (Egg White) 58 – 62% YOLK 28 – 34% The eggshell's shape and colour should not be underestimated, as it reflects the health status of the flock. Moreover, eggs with uniform shell colour exhibit consistent heat exchange and moisture loss during incubation, contributing to a uniform hatch. A WELL-BALANCED DIET AND OPTIMAL FLOCK HEALTH ensure that eggs have the correct proportions of albumen, yolk, and shell. If these proportions are met, there is no shell too hard or too strong for a chick to hatch—nature provides perfect conditions.
RkJQdWJsaXNoZXIy NTg2OTc2