Publicação: Alternative calcium source effects on commercial egg production and quality
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Facta-fundacio Arnco Ciência Tecnologia Avicolas
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Acesso aberto
Resumo
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% marine calcium (T5) presenting the worst result as compared to T1, which included only calcitic limestone as calcium source. It was concluded that marine calcium can replace up to 45% of calcitic limestone with no effects on performance or egg quality.
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alternative calcium source, eggshell quality, limestone replacement, marine algae, marine calcium
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Inglês
Como citar
Brazilian Journal of Poultry Science. Campinas: Facta-fundacio Arnco Ciência Tecnologia Avicolas, v. 9, n. 2, p. 105-109, 2007.
