But in the artificial environment of a commercial egg hatchery it becomes the job of the hatchery manager to ensure all conditions are as perfect as they can be in order to ensure maximum yield of quality chicks from each batch of eggs. Not only are temperature and air flow critical but ...
Humidity during the hatch We go into what most people call“lockdown” during the last three days of incubation,ready for the hatch. We stop turning eggs, and the humidity inside the incubator (or separate hatcher) needs to be higher to get the best hatch rates. The increased humidity keep...
Egg water loss during incubation has important effects on chick quality and hatchability. Weighing eggs at set and at transfer provides important data, being a very useful management tool in the hatchery. If needed, corrections can be made to bring water loss back within target.Guo Jun...
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One of the most important factors determining hatchability of avian eggs is the proper water balance of the eggs during incubation. In turkey eggs, a total diffusive water loss (F) of 12 +/- 1% SD initial egg mass in 28 days, yielded maximal hatchability irrespective of the combination of...
Relationship of incubation humidity and flock age to hatchability of broiler hatching eggs. Poultry Science, v.72, p.251-258, 1993.Vick, S.V.; J. Brake, and T. J. Walsh (1993): Relationship of incubation humidity and flock age to hatchability of broiler hatching eggs. Poultry Science,...
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For both trials, BW at hatch, BW at pull, hatch time, and chick weight loss between hatching and pull were measured. All unhatched eggs were opened and examined macroscopically. Experiment 2 was conducted using the chicks produced in Experiment 1. The chicks were immediately placed after pull ...
. The unusual eggs were smooth and shiny and lacked the outermost (sticky) layer of the shell of normal eggs. At 50% RH, about 50% of the weird eggs hatched. Exposure to 35% RH resulted in almost total mortality. About 80% of the weird eggs hatched at 61 and 83% R......
High humidity is necessary to prevent membranes drying and hardening before the hatch fully emerges. Humidity will naturally increase as the first eggs begin to hatch and internal membranes begin to dry. This effect is in addition to the increased area of water evaporation from the water channels...