在巴西蒙大拿州对繁殖价值模式的景观分析
Nathalia da Silva Costa1, Renato Fontes Guimarães1, Osmar Abílio de Carvalho Junior1
1Humanities Institute, University of Brasilia, Darcy Ribeiro Campus, Brasilia, DF, Brazil.
Tropical animal health and production
|July 24, 2025
概括
环境和地缘经济因素对巴西的肉牛繁殖价值估计有很大影响. 结合这些元素可以改善像蒙大拿热带品种这样的品种的遗传评估,提高未来的牲畜生产.
科学领域:
- 动物遗传学动物遗传学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 巴西的肉牛产业在全球具有重要意义,在各种生物群中利用多样化的生产系统.
- 环境和气候因素影响畜牧业生产,迫使品种和物种适应未来需求.
- 蒙大拿热带品种是为热带/亚热带放牧系统开发的.
研究的目的:
- 评估环境和地缘经济因素对蒙大拿热带牛的繁殖价值估计的影响.
- 分析土壤,气候和社会经济数据等因素如何影响遗传特征评估.
- 确定影响繁殖价值趋势的关键环境变量.
主要方法:
- 利用了来自巴西10个州63个农场的571,424只蒙大拿州动物 (1950-2019) 的数据.
- 分析了包括重量,每日增益,阴囊周长和选择指数在内的特征.
- 使用ArcGIS绘制环境 (NDVI,THI,温度,辐射) 和地缘经济 (土壤,海拔,降雨,人口密度,GDP) 数据.
主要成果:
- 环境和地缘经济因素明显影响育种价值估计.
- 繁殖值在高海拔地区显示出一致的趋势,其中包括中高的NDVI,低THI,较低的人口密度,较高的平均空气温度和较低的太阳辐射.
- 特定的环境和地缘经济变量与繁殖价值趋势相关,特别是在断奶后.
结论:
- 环境和地缘经济因素对于准确估计肉牛的繁殖价值至关重要.
- 这些因素通常不包括在遗传评估中,但可以显著影响选择决策.
- 整合这些变量可以优化巴西肉牛的遗传改进策略.
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