| Project/Area Number |
23658245
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Basic veterinary science/Basic zootechnical science
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| Research Institution | Kitasato University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 生理 / 精子 / 受胎能 / 精子走化性 / 人工授精 / ウシ / 低受胎性 / 精液 / 精しょう / 精子受胎能 |
|---|
| Research Abstract |
Artificial insemination (AI) has been carried out in cattle production, but it is announced that the fertility rate after AI has been decreasing in the latest decade. To understand a fundamental factor on low fertility, the present study aimed to demonstrate sperm movement and mechanism for its movement. As a result, this study showed that sperm chemotaxis may have a role for sperm movement to a site of fertilization with ovulated eggs, suggesting that an ability for sperm chemotaxis should be considered when sperm quality be assessed.
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