乳牛的繁殖特征和经济方面
Jeferson Bello Dos Santos1, Bruna Waddington de Freitas1, Isaac Andres Mora Obando1
1Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG, Brasil.
Animal reproduction
|February 7, 2025
概括
奶牛场的利能力与生殖效率有关. 较高的母牛怀孕率提高了利率,而高的替代率降低了利率,影响了整体的经济可行性.
科学领域:
- 农业经济学 农业经济学
- 乳制品科学 乳制品科学
- 生殖生物学 生殖生物学
背景情况:
- 奶牛场的经济可行性受到各种运营因素的影响.
- 了解生殖参数和经济指标之间的相互作用对于农场管理至关重要.
研究的目的:
- 描述影响奶牛场经济指标的生殖参数.
- 确定影响单位净利 (UNM),运营利能力 (OP) 和资本回报率 (RRC) 的关键生殖变量.
主要方法:
- 从26个乳制品农场收集了整个生产周期 (2022年9月至2023年8月) 的数据.
- 多重线性回归分析用于评估生殖参数对经济指标的影响.
- 逐步选择保留了在p < 0.10时显著的变量.
主要成果:
- 奶牛怀孕率和每个孕母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母母
- 替代率对UNM和OP都产生了负面影响.
- 奶牛怀孕率是唯一对RRC有显著积极影响的生殖参数.
结论:
- 生殖效率,特别是奶牛怀孕率,是奶牛农场经济表现的关键驱动因素.
- 提高利能力的战略应侧重于增强生殖参数,而不是仅限于削减成本或增加动物销售,这可能会提高替代率.
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