Influence of limestone particle size on performance and egg quality in laying hens aged 24-36 weeks and 56-68 weeks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F10%3A%230001200" target="_blank" >RIV/00027014:_____/10:#0001200 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of limestone particle size on performance and egg quality in laying hens aged 24-36 weeks and 56-68 weeks

Popis výsledku v původním jazyce

ISA Brown hens aged 24?36 weeks and hens aged 56?68 weeks were used to study the influence of limestone particle size and the animal?s age on laying performance and egg quality. Two diets were used: a diet containing calcium carbonate in fine limestone particles (LF), and a diet containing calcium carbonate in coarse limestone particles (LC). Lower egg production in hens aged 56?68 weeks was compensated in part by higher egg weight. In younger and older hens, feeding the LC diet increased hen-day egg production (P<0.001), shell weight by 0.2 and 0.2 g (P<0.001), shell thickness by 4 and 8 ?m (P<0.001), shell Ca content by 2 and 2 mg/g DM (P=0.003), albumen height by 0.2 and 0.3 mm (P=0.003), and Haugh units by 0.8 and 0.2 (P=0.014), respectively. It can be concluded that LC should be considered rather than LF when formulating diets for laying hens both in the early and the late phase of production.

Název v anglickém jazyce

Influence of limestone particle size on performance and egg quality in laying hens aged 24-36 weeks and 56-68 weeks

Popis výsledku anglicky

ISA Brown hens aged 24?36 weeks and hens aged 56?68 weeks were used to study the influence of limestone particle size and the animal?s age on laying performance and egg quality. Two diets were used: a diet containing calcium carbonate in fine limestone particles (LF), and a diet containing calcium carbonate in coarse limestone particles (LC). Lower egg production in hens aged 56?68 weeks was compensated in part by higher egg weight. In younger and older hens, feeding the LC diet increased hen-day egg production (P<0.001), shell weight by 0.2 and 0.2 g (P<0.001), shell thickness by 4 and 8 ?m (P<0.001), shell Ca content by 2 and 2 mg/g DM (P=0.003), albumen height by 0.2 and 0.3 mm (P=0.003), and Haugh units by 0.8 and 0.2 (P=0.014), respectively. It can be concluded that LC should be considered rather than LF when formulating diets for laying hens both in the early and the late phase of production.

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

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Animal Feed Science and Technology

ISSN

0377-8401

e-ISSN

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Svazek periodika

158

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000278690100012

EID výsledku v databázi Scopus

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