[Validation of a decision tree for selective dry cow therapy of dairy for a digital expert system].

IF 0.4 4区 农林科学 Q4 VETERINARY SCIENCES
Anna Stoll, Alicia Pichlmeier, Holm Zerbe, Folkert Onken, Julia Sophia Gerke, Florian Grandl, Leonid Ziegler, Rainer Martin
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引用次数: 0

Abstract

In this study, a decision tree derived from scientific literature on selective dry cow therapy (ST), which was developed as a knowledge base for a digital expert system, was evaluated. The decision tree merges algorithmic (based on cell count results) and cultural (based on milk sample findings) approaches.During a two-year project period (August 2021-September 2023), ST was carried out on 19 dairy farms in southern Germany according to the decision tree, without specific requirements being placed on the herd's udder health before the start. A total of 1,369 dry-off observations were recorded. The dry-off cases were evaluated regarding implementation of the recommendations, cell count at the first milk recording after calving, proportion of new infections and cures during the dry period depending on the implementation of the dry-off recommendation and the udder health status of the herd.Across all farms, 38.4% of cows were dried off without the use of an antibiotic. The potential for saving antibiotics varied greatly between farms (range: 2.4-71.3%). In 75.9% of cases, a dry-off recommendation could be made based on the available udder health data; only in around 25% of cows did the dry-off recommendation require a microbiological examination of quarter milk samples. On average, the milk cell count after the dry period was less than 100,000 cells/ml in animals that were dried off with and without an antibiotic dry-off preparation. The proportions of new infections and cures during the dry period did not differ significantly between animals with and without an antibiotic dry-off preparation.The results show that with the help of the developed decision tree, ST can be carried out safely in dairy farms without endangering udder health. This decision tree can therefore serve as a reliable knowledge base for a digital expert system to optimize dry-off management in dairy farms.

[用于数字专家系统的乳制品选择性干牛治疗决策树的验证]。
在这项研究中,从选择性干牛治疗(ST)的科学文献中得出的决策树被开发为数字专家系统的知识库,并进行了评估。决策树合并了算法(基于细胞计数结果)和培养(基于牛奶样本结果)方法。在为期两年的项目期间(2021年8月至2023年9月),根据决策树在德国南部的19个奶牛场进行了ST,在开始之前没有对牛群的乳房健康提出具体要求。共记录了1369次干干观测。对断乳病例进行了评估,包括建议的执行情况、产犊后第一次记录乳汁时的细胞计数、断乳期间新感染和治愈的比例(取决于断乳建议的执行情况)和牛群的乳房健康状况。在所有农场中,38.4%的奶牛在没有使用抗生素的情况下被晒干。不同养殖场节约抗生素的潜力差别很大(范围:2.4-71.3%)。在75.9%的情况下,可以根据现有的乳房健康数据提出干燥建议;只有大约25%的奶牛在干燥建议中要求对四分之一的牛奶样本进行微生物检查。平均而言,干燥期后的乳细胞计数低于100000细胞/ml的动物,用和不使用抗生素干燥制剂干燥。在干燥期新感染和治愈的比例在使用和不使用抗生素干燥制剂的动物之间没有显着差异。结果表明,利用所开发的决策树,可以在不危害奶牛健康的情况下,安全地在奶牛场进行ST。因此,该决策树可以作为数字专家系统的可靠知识库,以优化奶牛场的干燥管理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
0.80
自引率
0.00%
发文量
82
期刊介绍: Die Tierärztliche Praxis wendet sich mit ihren beiden Reihen als einzige veterinärmedizinische Fachzeitschrift explizit an den Großtier- bzw. Kleintierpraktiker und garantiert damit eine zielgruppengenaue Ansprache. Für den Spezialisten bietet sie Original- oder Übersichtsartikel zu neuen Therapie- und Operationsverfahren oder den Einsatz moderner bildgebender Verfahren. Der weniger spezialisierte Tierarzt oder Berufseinsteiger findet auf seinen Berufsalltag zugeschnittene praxisbezogene Beiträge in der Fortbildungsrubrik „Aus Studium und Praxis“. Mit dem hervorgehobenen „Fazit für die Praxis“ am Ende jedes Artikels verschafft sich auch der eilige Leser einen raschen Überblick über die wichtigsten Inhalte dieser modern konzipierten Fachzeitschrift mit den vielen hochwertigen, überwiegend farbigen Abbildungen. In jedem Heft ermöglicht ein ATF-anerkannter Fortbildungsartikel den Erwerb einer ATF-Stunde (Akademie für tierärztliche Fortbildung).
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