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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Influence of limestone particle size on performance and egg quality in laying hens aged 24-36 weeks and 56-68 weeks
Original language description
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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GH - Nutrition of farm animals
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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