新料场利能力相关特征的遗传参数 在Nelore牛中
Letícia Pereira1, Fernando Baldi2, Guilherme Jordão Magalhães Rosa3
1Department of Animal Science, Federal University of Goiás, Goiânia, Brazil.
概括
这项研究估计了Nelore牛的利能力特征的遗传参数. 在选择标准中包括累积利率 (AFP) 和每公斤活体重增益 (PFT) 的利,可以提高经济表现,并确定具有更大的遗传潜力的动物.
科学领域:
- 动物遗传学动物遗传学
- 量化遗传学 量化遗传学
- 畜牧业 生产 畜牧业 生产
背景情况:
- 经济特征对于畜牧养殖计划至关重要.
- 累积利能力 (AFP) 和每公斤活体重增益 (PFT) 的利是肉牛经济表现的关键指标.
- 了解这些特征的遗传基础对于有效的选择至关重要.
研究的目的:
- 估计AFP和PFT的 (共) 差组件和遗传参数.
- 分析AFP和PFT与各种生产,尸体,料效率和生殖特征之间的遗传关系.
- 提供对Nelore牛的遗传改进策略的见解.
主要方法:
- 利用了3614只Nelore动物的利能力数据.
- 在多特征动物模型中使用贝叶斯推理进行参数估计.
- 计算了感兴趣的特征之间的遗传性和遗传相关性.
主要成果:
- 对AFP和PFT的遗传性估计分别为0.18和0.02.
- 在利能力特征和生长,尸体,料效率和框架特征之间发现了中等至高的遗传相关性.
- 观察到与生殖特征的可变遗传相关性,男性生殖特征的相关性较低.
结论:
- AFP和PFT具有中等到高的遗传相关性,具有重要的生产特征.
- 这些利性特征可以作为基因选择中的有价值的工具,以提高Nelore牛的经济表现.
- 将AFP和PFT整合到选择标准中,可以帮助生产者识别出优异遗传动物以获得利.
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