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标题：Impact of copper (Cu) at the dose of 50 mg on haematological and biochemical blood parameters in turkeys, and level of Cu accumulation in the selected tissues as a source of information on product safety for consumers
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作者：Bogusław Makarski ; Mateusz Gortat ; Jerzy Lechowski 等
期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2014
卷号：21
期号：3
页码：567-570
DOI：10.5604/12321966.1120603
出版社：Institute of Agricultural Medicine in Lublin
摘要：Introduction. The current state-of the art points to a positive impact of copper (Cu) supplements on the general healthstatus in poultry. Copper induces beneficial changes in the haematological and biochemical blood parameters. It alsodisplays immunostimulating properties and helps maintain a proper microbiological balance in the digestive tract.Objective. The objective of this study was to investigate the impact of Cu at the dose of 50 mg/kg BW, administered inorganic and inorganic form, on the haematological and biochemical blood parameters and level of Cu bioaccumulation inthe liver and pectoral muscle.Materials and method. The study was carried out on 45 BUT-9 turkeys which had been were reared for 16 weeks. Theywere divided into 3 experimental groups: I – the control group; II – fed with CuSO4 at the dose of 50 mg Cu·dm-3 H2O; III –received a Cu chelate with lysine at the same dose.Results. The administration of Cu at the dose exceeding the nutritional recommendations did not induce beneficial changesin the examined birds. This indicates that it is not necessary to administer Cu doses higher than the recommended levels.The extent of Cu accumulation in the pectoral muscle increased by 40% compared to the control group, whereas in theliver it was higher by 30–35% than in the birds without Cu administration. The level of Cu in tissues does not pose a risk toconsumers.Conclusions. The supplementation of Cu at the dose of 50 mg has a negative impact on the level of the analyzed parameters.The results of the presented study indicate that the administered Cu dose exceeds birds’ demand for this element
关键词：copper; turkeys; feeding; mineral elements; food safety