| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2015: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Outline of Final Research Achievements |
The objectives of this research are to clarify the mechanism underlying decreasing body weight and feed efficiency in broiler chickens exposed to heat stress, and to develop feed ingredients to improve the reduced performance. Heat exposure to chickens was found to induce increased proteolysis of skeletal muscles via more mitochondrial ROS generation and decreased CD3-positive cell in the spleen so that metabolic and immune systems remarkably enhance energy requirement to maintain homeostasis. Streptococcus appears to be the less dominant genus in the ileum of heat-stressed chickens. Feeding diets supplemented with cashew nut shell liquid (CNSL) causes broiler chicken to alleviate reductions of body weight and feed intake when exposed to heat, partially via control of intestinal immune-related gene expression.
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