TechFocus_EGGS 0325 - Manual Egg Collection and Nest Box Ma…

(Image 3). Ensure the depth of the nest is correct as nests that are too shallow will cause eggs to roll out or hens drop them outward during lay (Image 4). Other desired features of manual nests include: - The nest edge must be strong enough to support a hen stepping in while being high enough to prevent eggs from rolling out. - Ensure sufficient ventilation openings to allow air movement through the nest and light penetration. Dark nests are no longer desired. Repair and Maintenance Proper repair and maintenance of nest boxes are essential for optimal hatching egg yield and cleanliness. Perches must be functional, and nest bottoms should hold shavings to encourage hens to enter. Nests without or with non- functional bottoms will increase the number of hens per nest and contribute to higher numbers of floor eggs, and more toe punched eggs. Nests are expensive to replace, with longevity and durability preferred. Avoid cheaper versions with thin metal sheets as they dent easily and appear worn within months. Nest Hygiene Regular cleaning and prilling of nests are essential to prevent fungal infections. Nests should be prilled or fumigated every 15 days using 1 teaspoon of paraformaldehyde fine powder, stirred and mixed into the nest material (check local legislation for chemical use). Avoid pellet types to prevent

Image 3: Example of a nest with a concrete block as a base

New nest designs feature a slide-out bottom tray or a center tray to collect roll-away eggs. Be careful with this design which may require additional help to hold this collection tray and collect the eggs. Egg rolling can cause cracks. Nest sizes are important to minimise floor eggs. The Cobb Breeder Guide recommends nests 25 cm wide, 30 cm high, and 25 cm deep. Ensure nest depth is at least 15 cm to offer females a sense of protection. Provide sufficient bedding to fill the nest at least ½ but no more than 2/3rd full. A concrete block as a base is preferred over an open base to prevent birds from accessing and laying eggs under the nests

Image 4: Example of shallow nests cause eggs to be laid outside of the nest.