在商业热带条件下将肉生长率提高到35d的肉生长动态和料转换率的数据分析
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
|August 12, 2023
概括
优化肉生产需要有控制的养策略. 战略性料调整,特别是在2-4周到6周之间,可以提高料转换率 (FCR) 和的体重.
科学领域:
- 动物科学动物科学
- 农业工程 农业工程
- 养家禽生产 养家禽生产
背景情况:
- 商业肉生产依赖于数据收集,但由于数据缺乏拐点,增长建模仍然具有挑战性.
- 优化料转换比率 (FCR) 对于肉养殖的经济可行性至关重要.
研究的目的:
- 评估控制养条件下的肉群体体重量 (BW) 动态,料摄入量,BW增加,FCR和死亡率.
- 确定最佳的养策略,以改善商业肉生产中的FRC.
主要方法:
- 分析了2018-2020年超过9500万只Ross 308 AP肉 (男性和女性) 的绩效记录.
- 利用决策树来根据35天的FCR将群体分为高和低料效率的群体.
- 将物流,Gompertz-Laird和von Bertalanffy的增长模型与每周的BW数据相匹配.
主要成果:
- 后勤增长模型提供了最准确和生物学上最有意义的估计.
- 高效率的雄性和雌性肉消耗的料较少,但比低效率的群体更有效率 (p < 0.001).
- 降低的生长速度与35天后更重的相关,提高了料效率,并增加了BW.
结论:
- 控制的养,从第2到第4周减少摄入量,并在最后一周增加补贴,提高了男女35天的FCR.
- 增长建模,特别是使用后勤模型,有助于理解和优化肉的性能.
- 战略性养管理是提高料效率和增加商业肉运营中的体重的关键.
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