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Current laying hens have a high genetic potential to produce eggs. If they receive adequate environmental conditions, health, and nutrition, they can maintain over 90% of the laying rate for a long period of the productive cycle.
In the last decade, we have seen how genetic progress has generated laying hens with an extraordinary productive persistence, accompanied by a slight decrease in body weight, feed consumption, and egg size, reaching 50% production earlier than ten years ago.
Modern laying hens, a challenge for nutritionists
Modern laying hens represent a challenge for nutritionists, as one can no longer entirely rely on scientific information generated in the past with other types of birds.
The importance of reaching the bodyweight during rearing
Therefore, it is necessary to prepare the layers to start the lay with a suitable size and bodyweight:
To interrelate the above parameters, the rearing diets must stimulate the increase in the size of the digestive tract and increase the levels of fiber. It is also important to use feed with a granulometry of around 1.0 to 1.2 mm from the fifth week of age.