2007
DOI: 10.1590/s1516-635x2007000200005
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Abstract: This study aimed at verifying the possibility of replacing calcitic limestone by marine calcium in the diet of layers. A total number of 321 Hi-sex hens, with 40 weeks of age at the beginning of the experiment, was used. A completely randomized experimental design was applied, with 5 treatments (0, 15, 30, 45, and 60 % of calcitic limestone replacement by marine calcium source) and eight replicates of eight birds each. Treatments significantly affected specific gravity (p<0.05), with the inclusion of 60% marin… Show more

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Cited by 11 publications
(8 citation statements)
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“…Calcium is also found to responsible for maintaining the internal egg quality (Ahmed et al, 2013). According to Pelicia et al, (2007), feed intake can be influenced by dietary Ca concentration. In domestic fowl, Ca present in feed is mainly absorbed between the duodenum and lower jejunum (Hurwitz and Bar, 1970).…”
Section: Introductionmentioning
confidence: 99%
“…Calcium is also found to responsible for maintaining the internal egg quality (Ahmed et al, 2013). According to Pelicia et al, (2007), feed intake can be influenced by dietary Ca concentration. In domestic fowl, Ca present in feed is mainly absorbed between the duodenum and lower jejunum (Hurwitz and Bar, 1970).…”
Section: Introductionmentioning
confidence: 99%
“…Estas atuam como uma embalagem do conteúdo do ovo e como proteção do embrião e deve ser suficientemente resistente para resistir os impactos da postura, coleta, classificação e transporte até alcançar o consumidor final (Pelícia et al, 2007). Em estudos anteriores Kussakawa et al (1998) alertaram a respeito da importância da qualidade da casca na avicultura industrial quanto à saúde alimentar, pois ovos com cascas de baixa qualidade representam um potencial risco de contaminação bacteriana.…”
Section: Introductionunclassified
“…O peso da casca está relacionado com o percentual de casca no ovo, e junto com a espessura da casca constituem dois indicadores de resistência do ovo a danos físicos. Segundo Pelícia et al (2007) a resistência da casca permite ao ovo resistir aos impactos da postura, colheita e classificação, na granja, até o transporte, armazenamento e comercialização dos ovos. Assim, é uma característica importante, especialmente no sistema de criação caipira, em que os ovos são mais expostos, sendo necessária em todas as fases da produção até o consumidor final.…”
Section: Discussionunclassified