环境和农场相关因素对在商业热带条件下养的肉的活体表现参数的影响
Gustavo A Quintana-Ospina1,2, Maria C Alfaro-Wisaquillo1, Edgar O Oviedo-Rondon1
1Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695-7608, USA.
Animals : an open access journal from MDPI
|November 14, 2023
概括
肉的活体表现,包括体重和料转换,受到环境条件和农场管理的重大影响. 较低的温度和特定的农场因素会对商业肉运营的生长产生负面影响,并增加死亡率.
科学领域:
- 动物科学动物科学
- 禽畜科学 禽畜科学 禽畜科学
- 农业工程 农业工程
背景情况:
- 众所周知,温度和湿度等环境因素会影响肉的表现,但商业环境的数据有限.
- 了解这些影响对于优化热带气候中的肉生产至关重要.
研究的目的:
- 评估温度,相对湿度,热湿度指数,管理和与农场相关的因素对肉生长表现 (BW,BW增长,FCR,死亡率) 的影响,长达35天.
- 在商业热带条件下确定影响肉生产率的关键环境和特定农场变量.
主要方法:
- 从罗斯308AP肉群 (2018-2020) 的绩效记录分析.
- 每小时通过电子传感器从29个农场的80只群体收集环境数据.
- 通过调查 (86个农场) 收集了与农场相关的因素.
- 统计分析包括相关性,ANOVA和机器学习技术.
主要成果:
- 在最多21天的低于最佳温度 (2.5°C低于最佳温度) 下,体重和体重增加减少,料转化率 (FCR) 恶化,28日和35日死亡率增加 (p < 0.001).
- 所有研究的与农场相关的因素都对 brojler 的活体表现产生了影响.
- 早期表现指标 (14日和21日) 是35天最终BW的显著预测指标.
结论:
- 环境条件和与农场相关的因素在商业热带环境中显著影响肉的活体表现.
- 影响业绩的关键农场相关因素包括肉的性别,从化场到农场的距离,以及农场的高度.
- 优化环境控制和考虑特定农场属性对于提高 brojler 生产效率至关重要.
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