Authors: Zhangguo Liu Bingyi Li
Publish Date: 2013/05/11
Volume: 40, Issue: 9, Pages: 5247-5253
Abstract
The purpose of this study is to characterize the expression profile of a novel gene WDR72 in laying hens Sixtyweek old Hyline Brown layers with similar laying sequence egg weight and shell strength were selected and divided into 5 groups The oviduct segments such as magnum white isthmus and uterus were sampled from each group of hens which were killed at 3 h postoviposition 3 h PO 415–45 h PO 85–9 h PO 12 h PO and 18 h PO respectively To the 85–9 h PO hens additional organs were also sampled besides oviduct tissues Moreover another group of hens with weak shell strength were selected and their oviduct segments were sampled at 12 h PO Then the expression profile of WDR72 was analyzed using realtime quantitative RTPCR The results showed as follows 1 WDR72 transcripts specifically distributed in parts of organs investigated At 85–9 h PO WDR72 appeared to be much more abundantly expressed in hens’ oviduct sections then followed in turn by brain kidney lung glandular stomach and spleen However there were almost no WDR72 transcripts expressed in pectoral muscle liver heart and jejunum 2 During the process of an “egg” passing through an oviduct the expression of WDR72 in the magnum was greatly superior to that in the other two oviduct segments at 3 h PO 85–9 h PO and 12 h PO while it was white isthmus in which WDR72 transcript levels were the highest at 415–45 h PO and 18 h PO 3 To any oviduct segment not only uterus but also magnum and white isthmus the expression of WDR72 in which was significantly upregulated at the stages of active calcification 4 WDR72 transcript levels in any oviduct segments of strongshell hens were significantly higher than that of weakshell layers P 001 which arose the possibility that WDR72 was positively associated with chicken eggshell strength In conclusion the expression profile of WDR72 gene in laying hens has been characterized which would facilitate to further probe into its functions
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