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牛肉繁育体系及对繁育目标性状的偏好

Beef Breeding Systems and Preferences for Breeding Objective Traits.

作者信息

Krupová Zuzana, Krupa Emil, Brzáková Michaela, Veselá Zdeňka, Malát Kamil

机构信息

Institute of Animal Science, Přátelství 815, Uhříněves, 104 00 Prague, Czech Republic.

Czech Beef Cattle Association, Těšnov 17, 110 00 Prague, Czech Republic.

出版信息

Animals (Basel). 2025 Jul 23;15(15):2175. doi: 10.3390/ani15152175.

Abstract

Our study aimed to identify the overall and cluster-specific characteristics of Czech beef cattle breeding systems. We used data from an online survey to ascertain farmers' preferences in breeding objectives. Considering various evaluation criteria and clustering approaches in 41 farms, three beef systems were defined according to herd size, management, marketing, breeding strategies and structures, and farmer age. Breeding values and performance were jointly used as the primary information in all three systems. Cow temperament and calf viability, maternal fertility and longevity, and animal health were found to be the most important traits. Cluster 1 represents pure-breeding farms that specialize in producing breeding animals. Farms in clusters 2 and 3 combined pure- and crossbreeding strategies with production, which was partially (cluster 2) and fully (cluster 3) diversified for all beef categories. Farms also prioritized calving performance and calf growth (clusters 1 and 2) and exterior traits (cluster 3). Production type scores significantly ( < 0.05) differed in clusters 3 (4.12) and 2 (3.25). The proportion of production, functional, and exterior trait categories was 12:37:51, with low variability among clusters (±1 to 2 percentage points). The inter-cluster comparison showed that specific characteristics were compatible with certain breeding goal trait preferences.

摘要

我们的研究旨在确定捷克肉牛养殖系统的整体特征和特定集群特征。我们使用在线调查数据来确定农民在育种目标方面的偏好。考虑到41个农场的各种评估标准和聚类方法,根据畜群规模、管理、营销、育种策略和结构以及农民年龄,定义了三种肉牛养殖系统。育种值和性能在所有三种系统中均被共同用作主要信息。发现母牛性情和犊牛活力、母畜繁殖力和寿命以及动物健康是最重要的性状。集群1代表专门生产种畜的纯种农场。集群2和3中的农场将纯种和杂交育种策略与生产相结合,其中集群2部分(部分)和集群3完全(全部)实现了所有牛肉类别的多样化。农场还优先考虑产犊性能和犊牛生长(集群1和2)以及外部性状(集群3)。集群3(4.12)和集群2(3.25)的生产类型得分存在显著差异(<0.05)。生产、功能和外部性状类别的比例为12:37:51,各集群之间的变异性较低(±1至2个百分点)。集群间比较表明,特定特征与某些育种目标性状偏好相匹配。

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