These eggshell elements are organized in a characteristic way in each species. The outer layer is calcareous, made up of different types of minerals ( Kitimasak, Thirakhupt, & Moll, 2003) and other components, mainly calcium, magnesium, phosphorus, oxygen, crude fat, protein, and nitrogen ( Kitimasak et al., 2003 Cusack, Fraser, & Stachel, 2003). The inner layer is organic, made up of fibrous connective tissue. Most reptile eggshells are organized in layers. Successful performance of these roles depends on adequate structural formation and composition ( Sahoo, Sahoo, & Mohanty-Hejmadi, 1998 Zhou et al., 2011). It protects the embryo against microorganisms, controls the flow of gases and water through its pores, and is a source of calcium for the embryo during their development. The eggshell is a fundamental structure in the incubation period. Palavras-chave: composição química, ovos, camada calcária, Tartaruga-da-Amazônia. Química da casca poderá auxiliar na criação em escala comercial dessa espécie,Īpresentado como fonte alternativa e promissora de carne exótica. Para os constituintes químicos, foram encontrados os seguintes
Esta espessura é condizente com ovos de outros Testudines com cascaįlexível. A espessura média da casca dos ovos foi de 183 Trabalho visa investigar os aspectos químicos que compõem a camada calcária,īem como a espessura da casca do ovo de PodocnemisĮxpansa no período pós-eclosão. Qualidade da dieta fornecida para as fêmeas que vivem em cativeiro.
Químicos da casca de ovos pós-eclosão de répteis pode ser um referencial de Keywords: chemical composition, eggs, limestone layer, Amazon turtle. expansa raised in commercialįacilities, once this species is an alternative and promising source of exotic Knowledge onĬhemical composition of the eggshell may aid the nutrition of P. Of the eggs of other Testudines with flexible eggshells. Therefore, the objective of this study was to investigate the chemicalĬharacteristics of the calcareous layer, as well as the thickness of Podocnemis expansa post-hatchingĮggshells. Indicators of the quality of the diet offered to females kept in captivity. On chemical components of the post-hatching eggshell of reptiles may provide
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