乳牛 (Bubalus bubalis) 的体重与部宽度之间的关系
Alvar Alonzo Cruz-Tamayo1, Marco Antonio Ramírez-Bautista2, Daniel Mota-Rojas3
1Facultad de Ciencias Agropecuarias, Universidad Autónoma de Campeche, Escárcega, Campeche, México.
The Journal of dairy research
|May 30, 2024
概括
部宽度可以准确地预测乳牛的体重. 使用部宽度测量的二次模型为估计水牛体重 (BW) 提供了可靠的方法.
科学领域:
- 动物科学动物科学
- 农业工程 农业工程
- 生物识别信息 生物识别信息
背景情况:
- 准确的体重 (BW) 估计对于畜牧管理至关重要.
- 在奶牛中进行传统的BW测量可能具有挑战性.
- 替代的形态测量测量可以提供一个实际的解决方案.
研究的目的:
- 为了研究乳牛 (Bubalus bubalis) 的体重 (BW) 和部宽度 (HW) 之间的关系.
- 开发和验证使用HW估计BW的预测模型.
- 评估这些模型在实际应用中的准确性.
主要方法:
- 数据来自墨西哥东南部的215只穆拉水牛.
- 用于构建BW预测模型的线性和非线性回归分析.
- 模型性能使用AIC,BIC,R2,MSE,RMSE和k-fold交叉验证进行评估.
主要成果:
- 在BW和HW之间观察到强烈的正相关性 (r = 0.96,P < 0.001).
- 一个二次模型 (BW = -176.33 + 8.74 × HW + 0.04 × HW2) 显示出优越的适应性和预测准确性.
- 选择的模型产生了最低的MSE (1228.64),RMSE (35.05) 和AIC (1532.41) 的结果.
结论:
- 部宽度是乳牛体重的可靠预测指标.
- 开发的二级模型为BW估计提供了实用和准确的方法.
- 这种方法可以帮助有效管理牛群和监测水牛.
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