The effect of the calcium source, concentration and particle size on calcium retention, eggshell quality and overall calcium requirement in laying hens

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F07%3A00104758" target="_blank" >RIV/62156489:43210/07:00104758 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

The effect of the calcium source, concentration and particle size on calcium retention, eggshell quality and overall calcium requirement in laying hens

Original language description

Four different sources of calcium in isonitrogenous and isoenergeric diets were fed to laying hens for two-week digestion trial when they were 56 and 57 weeks old. The mineral percentages in the feed were as follows: 29% fine limestone (LF) and 71% largelimestone (LG), 32% fine limestone (LF) and 68% eggshell, 32% fine limestone (LF) and 68% oyster shell, 50% fine limestone and 50% large limestone (LG). The contents of these sources of calcium in the diets were as follows: 10.33%, 9.33%, 9.33% and 9.33% respectively. 2. The coefficients of calcium retention were significantly higher (P=0.0271) in 50:50 LF:LG (0.578) and 32:68 LF:Eggshell (0.576). The midnight feeding significantly improved the coefficient of calcium retention (P<0.01)in all mixtures except 50:50 LF:LG. 3. In the mixture 29:71 LF:LG and 32:68 LF:Oystershell, there was significantly higher eggshell quality; eggshell weight (P=0.0035), eggshell thickness (P=0.0000) and eggshell strength (P=0.0012). The midnight feeding h

Czech name

The effect of the calcium source, concentration and particle size on calcium retention, eggshell quality and overall calcium requirement in laying hens

Czech description

Four different sources of calcium in isonitrogenous and isoenergeric diets were fed to laying hens for two-week digestion trial when they were 56 and 57 weeks old. The mineral percentages in the feed were as follows: 29% fine limestone (LF) and 71% largelimestone (LG), 32% fine limestone (LF) and 68% eggshell, 32% fine limestone (LF) and 68% oyster shell, 50% fine limestone and 50% large limestone (LG). The contents of these sources of calcium in the diets were as follows: 10.33%, 9.33%, 9.33% and 9.33% respectively. 2. The coefficients of calcium retention were significantly higher (P=0.0271) in 50:50 LF:LG (0.578) and 32:68 LF:Eggshell (0.576). The midnight feeding significantly improved the coefficient of calcium retention (P<0.01)in all mixtures except 50:50 LF:LG. 3. In the mixture 29:71 LF:LG and 32:68 LF:Oystershell, there was significantly higher eggshell quality; eggshell weight (P=0.0035), eggshell thickness (P=0.0000) and eggshell strength (P=0.0012). The midnight feeding h

Type

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

CEP classification

GH - Nutrition of farm animals

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2007

Confidentiality

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

Name of the periodical

British Poultry Science

ISSN

0007-1668

e-ISSN

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Volume of the periodical

48

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

71-75

UT code for WoS article

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EID of the result in the Scopus database

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