KMID : 0893420140150040579
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Journal of Veterinary Science 2014 Volume.15 No. 4 p.579 ~ p.582
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Eggshell apex abnormalities associated with Mycoplasma synoviae infection in layers
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Jeon Eun-Ok
Kim Jong-Nyeo Lee Hae-Rim Koo Bon-Sang Min Kyeong-Cheol Han Moo-Sung Lee Seung-Baek Bae Yeon-Ji Mo Jong-Suk Cho Sun-Hyung Lee Chang-Hee Mo In-Pil
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Abstract
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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.
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KEYWORD
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eggshell abnormalities, eggshell ultrastructure, Mycoplamsa synoviae, scanning electron microscopy
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