| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
In order to clarify the regulatory mechanism underlying the suppressive effect of light exposure during dark period on GH secretory pattern in cattle, the role of the central nervous system, especially dopaminergic (DA) neurons, were evaluated. It is suggested that DA neurons have a stimulatory effect on GH secretion and are involved in generating spontaneous GH ultradian rhythm in cattle. However, the role of DA in the suppressive effect of light on GH remains to be clarified.
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