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KMID : 0893420140150040579
Journal of Veterinary Science
2014 Volume.15 No. 4 p.579 ~ p.582
Eggshell apex abnormalities associated with Mycoplasma synoviae infection in layers
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
Abstract
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.
KEYWORD
eggshell abnormalities, eggshell ultrastructure, Mycoplamsa synoviae, scanning electron microscopy
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