使用太阳能风扇积极通风小牛:对小牛微气候和小牛温度调节的影响
Bethany Dado-Senn1, Jennifer Van Os1, Joao Dorea1
1Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, 53597.
JDS communications
|January 15, 2024
概括
与没有通风 (CON) 相比,太阳能主动通风 (ACT) 改善了小牛的微气候和温度调节. 被动通风 (PASS) 也改善了条件,这表明任何一种方法都可能足以减少房小牛的热量.
科学领域:
- 动物科学动物科学
- 环境生理学环境生理学
- 农业工程 农业工程
背景情况:
- 活跃通风是成年奶牛的经过验证的减热策略.
- 大多数美国奶牛在户外子里,一个缺乏通风研究的系统.
- 调查通风对小牛福利的影响对于乳制品生产至关重要.
研究的目的:
- 为了评估一个太阳能发电的风扇系统,以提高户外小牛的微气候.
- 评估活性通风对小牛的温度调节和行为的影响.
- 为了比较活跃的,被动的和最小的通风策略,所住的小牛.
主要方法:
- 一个3x3拉丁方形设计,夏天有12只断奶前的小母牛.
- 对受控 (CON),被动 (PASS) 或主动 (ACT) 通风的四天暴露期.
- 持续和受限时间测量微气候 (温度,湿度,空气速度) 和小牛生理/行为反应 (呼吸,出汗,直肠温度).
主要成果:
- 与被动通风和控制相比,主动通风显著增加了口的空气速度.
- 被动通风导致了最低的内部干灯泡温度.
- 积极通风显示,小牛的呼吸和温度控制有所改善,但与被动通风相比,并没有持续改善.
结论:
- 与最小通风相比,主动通风改善了的微气候和小牛的反应.
- 被动通风也提供了显著的好处,这表明它可能足以减轻热量.
- 无论是主动通风还是被动通风的策略,都似乎足以减轻户外房小牛的热应激.
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