1.Eggshell apex abnormalities associated with Mycoplasma synoviae infection in layers.
Eun Ok JEON ; Jong Nyeo KIM ; Hae Rim LEE ; Bon Sang KOO ; Kyeong Cheol MIN ; Moo Sung HAN ; Seung Baek LEE ; Yeon Ji BAE ; Jong Suk MO ; Sun Hyung CHO ; Chang Hee LEE ; In Pil MO
Journal of Veterinary Science 2014;15(4):579-582
Eggs exhibiting eggshell apex abnormalities (EAA) were evaluated for changes in shell characteristics such as strength, thickness, and ultrastructure. Mycoplasma synoviae (MS) infection was confirmed by serological assay along with isolation of MS from the trachea and oviduct. Changes in eggshell quality were shown to be statistically significant (p < 0.01). We also identified ultrastructural changes in the mammillary knob layer by Scanning Electron Microscopy. While eggs may seem to be structurally sound, ultrastructural evaluation showed that affected eggs do not regain their former quality. In our knowledge, this is the first report describing the occurrence of EAA in Korea.
Animals
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Chickens
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Egg Shell/microbiology/*ultrastructure
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Microscopy, Electron, Scanning/veterinary
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Mycoplasma Infections/microbiology/*veterinary
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Mycoplasma synoviae/*physiology
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Poultry Diseases/*microbiology
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Republic of Korea
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