1992 Fiscal Year Final Research Report Summary
STUDY ABOUT FEED FORMULATION TO IMPROVE BROILER PRODUCTIVITY IN SUMMER
| Project/Area Number |
02660271
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
畜産学(含草地学)
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| Research Institution | TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY |
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Principal Investigator |
KAMADA Toshihiko TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY,FACULTY OF AGRICULTURE, ASSOCIATE PROFESSOR, 農学部, 助教授 (70015121)
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| Co-Investigator(Kenkyū-buntansha) |
SUGAWARA Kunio UTUNOMIYA UNIVERSITY,FACULTY OF AGRICULTURE, ASSOCIATE PROFESSOR, 農学部, 助教授 (50091947)
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| Project Period (FY) |
1990 – 1992
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| Keywords | BROILER / SUMMER PRODUCTIVITY / FEED FORMULATION / ENERGY CONTENT / PROTEIN CONTENT / HEAT PRODUCTION / HEAT INCREMENT / BODY TEMPERATURE |
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| Research Abstract |
In Experiment 1, heat tolerance of broiler chicken was investigated. Broiler chicken exposed to high temperature during pullet stage and no exposure bird were compared at mature stage. High but not severe temperature birds were more torelable to hot condition at mature stage. It was considered that temperature environment at developing stage is important. In experiment 2, effect of feed formulation on broiler performance at high temperature was investigated. High energy-high protein, high energy-normal protein, high energy-low protein, normal energy-high protein, normal energy-normal protein, normal energy-low protein, low energy-high protein, low energy-normal protein, and low energy-low protein feed were fed to broilers. Under hot condition, body weight gain was depressed and clear differences among feed were not observed. Some feed however showed better results. So it was considered that formulation of feed used under hot condition is not same as normal one. In experiment 3, effect of feed formulation on broiler heat production at high temperature was investigated. Feeds formulated as above were fed and heat production was measured. At high temperature, high protein feeds increased heat production especially immediately after feeding. So specific dynamic action is thought to have severe effect on body temperature, that feeding low protein content feed would improve body temperature level and broiler performance. Low protein-high energy feed was thought to be suitable under hot condition.
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