{"id":1703,"date":"2018-07-27T05:27:56","date_gmt":"2018-07-27T05:27:56","guid":{"rendered":"https:\/\/www.minervet.com\/?p=1703"},"modified":"2018-07-27T05:27:56","modified_gmt":"2018-07-27T05:27:56","slug":"deficiencies-in-the-quality-of-the-eggshell-posible-causas-and-solutions","status":"publish","type":"post","link":"https:\/\/www.minervet.com\/en\/deficiencies-in-the-quality-of-the-eggshell-posible-causas-and-solutions\/","title":{"rendered":"Deficiencies in the quality of the eggshell, possible causes and solutions"},"content":{"rendered":"

Nowadays, the industrial production of eggs demands exhaustive controls to offer quality and long lasting product. Layer farms obtain different qualities and egg sizes, depending on the layers body condition<\/strong>, nutrition<\/strong>, sanitary status<\/strong> and handling<\/strong>.<\/p>\n

I. EGG FORMATION PROCESS<\/u><\/strong><\/p>\n

Female hens are ready to be fertil at 20 weeks and can produce an egg every 24-26 hours.<\/u><\/strong><\/p>\n

The process of egg formation is divided into several stages related to the anatomical segment of the reproductive system:<\/p>\n

Located in the infundibulum<\/strong>, the yolk or ovule, which will give rise to the embryo in the case of fertilization, forms two layers of vitelline membrane, this prevents the entry of water from the egg white.<\/p>\n

The magnum<\/strong>, the longest segment of the oviduct, is responsible for the synthesis of proteins that are deposited during a period of approximately 3 hours 30 minutes.<\/p>\n

In the passage through the isthmus<\/strong>, the albumen or clear is surrounded by the tesaceous membranes<\/strong> and, already in the uterus or gland<\/strong>, the egg rotation begins with twisting of its protein fibers and formation of the chalazas<\/strong> that give central support to the yolk.<\/p>\n

The egg remains in the uterus for 18-22 hours to give formation to the shell and then be expelled through the cloaca<\/strong>.<\/p>\n

The shell is mainly composed of calcium carbonate, its function is to protect the egg content, allowing gaseous exchange.<\/p>\n

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II. EGGSHELL PROBLEMS<\/u><\/strong><\/p>\n

Failures in oviposition that can be detected macroscopically. These have varied causes that the producer must know in order to relate to the product obtained.<\/p>\n

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  1. Obtaining eggs without shells or in coltsfoot<\/strong> (where the egg content is only covered by the outer membrane) during the daily collection of eggs inside the grange, can give the following information:<\/li>\n<\/ol>\n