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The Effect of Level and Source of Dietary Selenium Supplementation on Eggshell Quality

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2010
Authors
Pavlović, Zoran
Miletic, Ivanka
Jokić, Živan
Pavlovski, Zlatica
Škrbić, Zdenka
Sobajic, Sladana
article (publishedVersion)
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Abstract
A 16-week-long experiment was performed to compare the effect of sodium selenite (SS) and selenium-enriched yeast (SY) supplementation on eggshell quality and also to evaluate breaking force correlation with other parameters of shell quality originating from hens fed with selenium supplementation. One hundred Shaver 579 hens (27 weeks old) with similar body size were randomly divided for five dietary treatments: basal diet without selenium supplementation and basal diets with two levels of selenium supplementation (0.4 or 0.8 mg/kg) via SS or SY. No adverse effect of Se inclusion in hen's feed, regardless of its source, on shell breaking force, shell deformation, shape index, shell thickness and shell percentage, were observed throughout the current study (P > 0.05). Moderate correlations were found between breaking force and nondestructive shell deformation for all diets (P (lt) 0.05). There was no significant overall correlation between egg breaking force and shell thickness or/and... percentage shell in the presence of selenium supplemention (P > 0.05). Shape index in all four selenium-supplemented groups was not related to the breaking force (P > 0.05). Selenium supplementation of up to 0.8 mg/kg, regardless of its source, in the diet of laying hens in their first phase of laying does not adversely affect eggshell quality.

Keywords:
Selenium / Shell breaking force / Shell deformation / Index of shape / Eggshell thickness / Percentage shell
Source:
Biological Trace Element Research, 2010, 133, 2, 197-202
Publisher:
  • Humana Press Inc, Totowa

DOI: 10.1007/s12011-009-8422-x

ISSN: 0163-4984

PubMed: 19513591

WoS: 000274140600009

Scopus: 2-s2.0-77950350764
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URI
http://r.istocar.bg.ac.rs/handle/123456789/232
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