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논문 기본 정보

자료유형
학술저널
저자정보
Han, Rong-Xun (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Choi, Su-Min (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Kim, Myung-Youn (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Quan, Yan Shi (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Kim, Baek-Chul (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Diao, Yun Fei (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Koqani, Reza (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Park, Chang-Sik (Division of Animal Science & Resources, Research Center for Transgenic and Cloned Pigs Chungnam National University) Jin, Dong-Il (Division of Animal Science & Resources, Research Center)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제32권 제4호
발행연도
2008.1
수록면
255 - 261 (7page)

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The early diagnosis of bovine pregnancy is an essential component of successful reproductive planning on farms, because lack of bovine pregnancy over the long term results in reproductive failure and low milk yield-the latter of which is a special concern on dairy farms. This study was designed to identify early pregnancy-specific whey proteins in bovine, by comparing milk samples collected from cattle during pregnancy (Days 30 and 50) and from non-pregnant cattle. In this study, differentially expressed proteins in five pregnant and five non-pregnant Holstein dairy cattle were investigated and compared, using proteomics analysis. The first dimension was applied to a pH $3.0{\sim}10.0$ strip, by loading a 2-mg milk protein sample. After the second-dimension separation was performed, the gels were stained with colloidal Coomassie brilliant blue. The stained gels were scanned and the images were analyzed, to detect variations in protein spots between non-pregnant and pregnant cattle milk protein spots, using ImageMaster, this was followed by analysis with MALDI TOF-MS. Analysis of the 2-DE gel image resulted in a total of approximately $500{\sim}600$ protein spots, of which 12 spots were differentially expressed, six spots were up-regulated, and four spots were down-regulated; two spots were identified as pregnancy-specific proteins. These proteins were identified as lactoferrin, NA-DH dehydrogenase subunit 2, albumin, serum albumin precursor and transferrin. Our results via 2-D PAGE analysis revealed composite profiles of several milk proteins related to early bovine pregnancy, implying the possible use of these milk proteins in the early detection of bovine pregnancy.

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