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Limestone particle sizes and lighting regimens on egg and bone quality of laying hens
Provedor de dados: 86
Autores: Xavier,Regina Patrícia de Souza; Freitas,Ednardo Rodrigues; Braz,Nádia Melo; Farias,Nadja Naiara Pereira; Lima,Raffaella Castro; Watanabe,Pedro Henrique; Nascimento,Germano Augusto Jerônimo; Peixoto,Maria Simone Mendes.
Abstract:The objective of this work was to evaluate the effect of limestone particle sizes in the diet and of lighting regimes on the egg and bone quality and on the performance of commercial laying hens. Three hundred Hissex White layers, at 18 weeks of age, were distributed in a completely randomized design, in a 5×2 factorial arrangement (coarse limestone in the diet at 0, 25, 50, 75, and 100%; with or without artificial light), with five replicates of six birds. No significant interaction was observed between particle sizes and lighting regime for the evaluated parameters. There was no significant effect of coarse limestone level in the diet on the performance and egg quality of hens; however, bone deformity (3.23 to 4.01 mm), strength (5.19 to 6.70...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg mass; Shell thickness; Specific gravity; Tibia.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000800718