Effect of various copper supplements to feed of laying hens on Cu content in eggs, liver, excreta, soil and herbage

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F06%3A16501" target="_blank" >RIV/60460709:41210/06:16501 - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/06:00040789 RIV/00027014:_____/06:#0000210

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of various copper supplements to feed of laying hens on Cu content in eggs, liver, excreta, soil and herbage

Original language description

Copper is often added to poultry diets as an antimicrobial agent at doses greatly exceeding the nutritional requirement. In this study, the basal diet of laying henscontaining 9.2 mg Cu/kg was supplemented with CuSO4.5 H2O at 0, 25, 65, 115 and 240 mg Cu/kg dry matter (DM). At Cu dietary concentration just below the level permitted by the European Union (35 mg/kg), the Cu content in the egg yolk was significantly (P < 0.05) increased by 26%, and nonsignificantly by 4.1, 9.1, and 7.9% in the egg white, eggshell, and liver, respectively. When Cu concentration in the diet was doubled, the effect of Cu on Cu content in eggshell and liver was statistically significant as well. In no liver sample was the hygienic limit of Cu content (80 mg/kg) exceeded. Supplementation of diets with Cu increased Cu concentration in excreta linearly from 25.3 to 396.8 mg/kg DM. Dried excreta were used for fertilization of grassland at 21 g N/m2. Three months later, soil and herbage were sampled and analyzed.

Czech name

Vliv rozdílného doplňku mědi do krmiva pro nosnice na obsah mědi ve vejcích, trusu, půdě a píci.

Czech description

Copper is often added to poultry diets as an antimicrobial agent at doses greatly exceeding the nutritional requirement. In this study, the basal diet of laying henscontaining 9.2 mg Cu/kg was supplemented with CuSO4.5 H2O at 0, 25, 65, 115 and 240 mg Cu/kg dry matter (DM). At Cu dietary concentration just below the level permitted by the European Union (35 mg/kg), the Cu content in the egg yolk was significantly (P < 0.05) increased by 26%, and nonsignificantly by 4.1, 9.1, and 7.9% in the egg white, eggshell, and liver, respectively. When Cu concentration in the diet was doubled, the effect of Cu on Cu content in eggshell and liver was statistically significant as well. In no liver sample was the hygienic limit of Cu content (80 mg/kg) exceeded. Supplementation of diets with Cu increased Cu concentration in excreta linearly from 25.3 to 396.8 mg/kg DM. Dried excreta were used for fertilization of grassland at 21 g N/m2. Three months later, soil and herbage were sampled and analyzed.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GG - Zootechnics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Archives of Environmental Contamination and Toxicology

ISSN

0090-4341

e-ISSN

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Volume of the periodical

50

Issue of the periodical within the volume

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Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

280-283

UT code for WoS article

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EID of the result in the Scopus database

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