Czyż Katarzyna, Dobrzański Zbigniew, Kowalska-Góralska Monika, Senze Magdalena, Wyrostek Anna
Institute of Animal Breeding, Wrocław University of Environmental and Life Sciences, Wrocław, 51-630, Poland.
Department of Environment Hygiene and Animal Welfare, Wrocław University of Environmental and Life Sciences, Wrocław, 51-630, Poland.
Arch Anim Breed. 2023 Dec 11;66(4):421-431. doi: 10.5194/aab-66-421-2023. eCollection 2023.
The study aimed to examine an effect of the preparation based on nanosilver suspension on mineral carrier on poultry litter microbiological profile. The study was conducted on Ross 308 broiler chickens. Three groups were formed, 84 birds in each. Preparation used in the study was composed of aqueous nanosilver suspension sprayed on mineral sorbent. Birds were maintained on straw-sawdust litter; the groups were differentiated due to preparation application (C - control without preparation, I - preparation applied once at the beginning, II - preparation added each week). Pooled litter samples were collected from the top layer of the litter (six samplings) in order to determine mesophilic bacteria count. Additionally, on the last day of the experiment litter samples were collected from three points (by drinker, feeder, pen corner) to analyze the total number of microorganisms, spp., , , and molds. In the case of mesophilic bacteria count, the highest decrease was noted for group II. Total number of microorganisms determined in various points of the pen did not give clear relationship; in some cases even an increase was found. spp. decreased as a result of preparation addition; the highest decrease was noted for samples collected by feeders. The results for are not unequivocal. However, a decrease was found in the case of drinkers and feeders compared to control, especially in group II. An addition of preparation caused a decrease in , especially for samples collected by feeders in group II. Similar tendency was found for molds. The study demonstrated that the preparation exhibits bactericidal properties. However, its effect varies depending on microorganism kind and sample collection point.
该研究旨在考察基于纳米银悬浮液的制剂对矿物载体处理家禽粪便微生物分布的影响。研究选用罗斯308肉鸡进行。实验分为三组，每组84只鸡。研究中使用的制剂由喷洒在矿物吸附剂上的纳米银水悬浮液组成。鸡饲养在稻草-锯末垫料上；各实验组因制剂施用方式不同而有所区分（C组——不施用制剂的对照组，I组——在开始时一次性施用制剂，II组——每周添加制剂）。为测定嗜温菌数量，从垫料表层采集混合垫料样本（共六次采样）。此外，在实验的最后一天，从三个点（饮水器旁、喂食器旁、围栏角落）采集垫料样本，以分析微生物、 、 、 和霉菌的总数。就嗜温菌数量而言，II组的降幅最大。在围栏不同位置测定的微生物总数未呈现出明确的关系；在某些情况下甚至有所增加。 添加制剂后 数量减少；在喂食器旁采集的样本中降幅最大。 的结果并不明确。然而，与对照组相比，在饮水器和喂食器旁采集的样本中 数量有所减少，尤其是在II组。添加制剂导致 数量减少，特别是II组在喂食器旁采集的样本。霉菌也呈现出类似趋势。该研究表明该制剂具有杀菌特性。然而，其效果因微生物种类和样本采集点的不同而有所差异。
