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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GH - Výživa hospodářských zvířat

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

British Poultry Science

ISSN

0007-1668

e-ISSN

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Svazek periodika

48

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

71-75

Kód UT WoS článku

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EID výsledku v databázi Scopus

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