Correlation between descriptive and group type traits in the system of cow’s linear classification of Ukrainian Brown dairy breed

IF 1.8 Q2 AGRICULTURE, MULTIDISCIPLINARY Open Agriculture Pub Date : 2023-01-01 DOI:10.1515/opag-2022-0180
Leontiі Khmelnychyiі, Serhii Khmelnychyiі, Y. Samokhina
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Abstract

Abstract The aim of this study was to evaluate the phenotypic relationships between descriptive and group linear-type traits and the final score of first-born cows of the Ukrainian Brown dairy breed. The data from the linear estimation were collected on the population of 707 cows in six herds in the Sumy region of Ukraine from 2000 to 2018. It was found that the level of correlations between descriptive and group traits of the conformation, which characterize the dairy strength, frame, feet/legs, and udder, differed in significant variability by direction, strength, and reliability. The level of positive phenotypic correlations of descriptive traits with all group traits of the conformation type and the final score was height (0.19–0.34 and 0.34), chest width (0.06–0.29 and 0.17), body depth (0.28–0.53 and 0.48), angularity (0.35–0.77 and 0.62), rump width (0.29–0.36 and 0.46), rear legs posture (0.33–0.37 and 0.48), front udder attachment (0.23–0.39 and 0.41), height of rear udder attachment (0.17–0.27 and 0.29), and central ligament (r = 0.16–0.39 and 0.36). The body condition score was related to group traits but in a negative value, with correlation coefficients ranging from −0.07 (legs) to −0.47 (dairy strength). The level of correlation between descriptive traits and the final score indicated that the selection based on the results of good development of these traits will contribute to the overall progress of cows in the direction of the desired dairy type.
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乌克兰棕色奶牛品种线性分类系统中描述性性状与类群型性状的相关性
摘要本研究的目的是评估乌克兰棕色奶牛品种首产奶牛描述性和群体线性性状与最终得分之间的表型关系。线性估计的数据收集自2000年至2018年乌克兰苏米地区6个畜群的707头奶牛。研究发现,乳牛的强度、骨架、脚/腿和乳房等构象的描述性特征和群体特征之间的相关水平在方向、强度和可靠性方面存在显著差异。描述性状与构象型各类群性状的表型正相关水平分别为:身高(0.19-0.34和0.34)、胸宽(0.06-0.29和0.17)、体深(0.28-0.53和0.48)、角度(0.35-0.77和0.62)、臀宽(0.29 - 0.36和0.46)、后腿姿势(0.33-0.37和0.48)、前乳贴(0.23-0.39和0.41)、后乳贴高(0.17 - 0.27和0.29)、中央韧带(r = 0.16-0.39和0.36)。体况评分与群体性状呈负相关,相关系数为- 0.07(腿)~ - 0.47(乳力)。描述性性状与最终得分之间的相关水平表明,基于这些性状发育良好的结果进行的选择,将有助于奶牛朝着理想乳制品类型的方向整体进步。
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来源期刊
Open Agriculture
Open Agriculture AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
3.80
自引率
4.30%
发文量
61
审稿时长
9 weeks
期刊介绍: Open Agriculture is an open access journal that publishes original articles reflecting the latest achievements on agro-ecology, soil science, plant science, horticulture, forestry, wood technology, zootechnics and veterinary medicine, entomology, aquaculture, hydrology, food science, agricultural economics, agricultural engineering, climate-based agriculture, amelioration, social sciences in agriculuture, smart farming technologies, farm management.
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