STUDY ABOUT FEED FORMULATION TO IMPROVE BROILER PRODUCTIVITY IN SUMMER

研究饲料配方以提高夏季肉鸡生产率

• 批准号: 02660271
• 负责人: KAMADA Toshihiko
• 金额: $ 1.34万
• 依托单位: TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02660271/
• 关键词: BROILER; SUMMER PRODUCTIVITY; FEED FORMULATION; ENERGY CONTENT; PROTEIN CONTENT; HEAT PRODUCTION; HEAT INCREMENT; BODY TEMPERATURE; 夏季生産性; 飼料成分; 代謝エネルギー; 産熱量; 体温上昇; ブロイラ-; 防暑対策; エネルギ-含有量; 特異動的作用; 感長; エネルギ-利用効率; 高温環境; 代謝エネルギ-量; CP含有量 /

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.

在实验1中，研究了肉鸡的耐热性。对在小母鸡阶段暴露于高温的肉鸡和在成熟阶段未暴露的鸡进行比较。高温但不严重的鸟类在成熟阶段更能忍受炎热的环境。人们认为发育阶段的温度环境很​​重要。在实验2中，研究了饲料配方对高温下肉鸡生产性能的影响。高能量-高蛋白质，高能量-正常蛋白质，高能量-低蛋白质，正常能量-高蛋白质，正常能量-正常蛋白质，正常能量-低蛋白质，低能量-高蛋白质，低能量-正常蛋白质，低能量-正常蛋白质给肉鸡饲喂低能量蛋白质饲料。在炎热条件下，体重增加受到抑制，并且饲料之间没有观察到明显的差异。然而，一些饲料显示出更好的效果。因此认为热态下使用的饲料配方与普通饲料配方不同。实验3研究了饲料配方对肉鸡高温产热的影响。饲喂如上配制的饲料并测量产热量。在高温下，高蛋白饲料会增加产热量，尤其是在饲喂后立即。因此，特定的动态动作被认为对体温有严重影响，饲喂低蛋白质含量饲料将提高体温水平和肉鸡生产性能。低蛋白高能量饲料被认为在炎热条件下是合适的。