Respiratory disease infectious bronchitis (IBV)įollow the recommended vaccination program during rearing include periodic booster vaccinations.Įxcessive calcium in the feed (causing brown shell eggs to be off-color)Įnsure that the diet formulation contains the correct amount of calcium according to the Nutrient Requirements of Poultry, 1994, 9th edition, National Research Council. Watch out for problems with density, nutrition, environment control/temperature, noxious gases. Minimize hen stress in the production system. Maintain gas lines and equipment in proper working order gas leaks are an explosion hazard as well. Brown eggs that are off-color (lilac, pink, or lighter brown)Ĭhlortetracycline (600-800 gm/ton), AureomycinĮxposure to gas leaks (natural gas or propane) from heaters.The following chart identifies a number of defects in eggs, their possible causes, and corrective measures you may take. It is important for producers to understand what may cause certain egg defects and to provide a solution in their production system. The emphasis on locally produced food in the “slow food movement” also has changed what the hens are exposed to and made the way they are handled increasingly variable.
#TREMULOUS AFFECT FREE#
As egg production methods become more varied-for example, changing from cage to free range-and as layer strains are selected for the environment and hens age, the number of defects in eggs is increasing. These factors will vary depending upon the housing environment, genetics, drugs, feed ingredients, or chemicals used in agriculture. Many factors can influence egg quality and appearance.
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