During the last years, drastic reduction in the use of Artemia as a live prey for marine finfish became popular. Histological studies have been carried out regarding the distribution of mucins in the intestine of many species. In this study, the aim was to detect differences on histological level of the intestine between the different treatments, in order to understand better the role of Artemia in the development of the digestive tract. A homogeneous batch of 20days old sea bream larvae was divided into 5 different treatments, varying in the amount of Artemia that was fed and the type of dry feed used for weaning. Samples of larvae of all treatments were taken at 30, 40, 50 and 60dph for histological analyses. In all the sampled larvae goblet cells were found. No goblet cells were observed in the stomach. The number of goblet cells found is differing with the age of the larvae and differences between different individuals of the same age have been observed. This preliminary study suggests that the histological approach could be an important tool to better understand the influence of a diet on the intestine development and as a consequence on the larvae growth.
Histological study of the digestive tract of Sparus aurata larvae fed with different feeding regimes
LENZI, CARLA;PIRONE, ANDREA;BAGLINI, ALESSANDRO;MAZZANTI, ELISA;FRONTE, BALDASSARE;
2012-01-01
Abstract
During the last years, drastic reduction in the use of Artemia as a live prey for marine finfish became popular. Histological studies have been carried out regarding the distribution of mucins in the intestine of many species. In this study, the aim was to detect differences on histological level of the intestine between the different treatments, in order to understand better the role of Artemia in the development of the digestive tract. A homogeneous batch of 20days old sea bream larvae was divided into 5 different treatments, varying in the amount of Artemia that was fed and the type of dry feed used for weaning. Samples of larvae of all treatments were taken at 30, 40, 50 and 60dph for histological analyses. In all the sampled larvae goblet cells were found. No goblet cells were observed in the stomach. The number of goblet cells found is differing with the age of the larvae and differences between different individuals of the same age have been observed. This preliminary study suggests that the histological approach could be an important tool to better understand the influence of a diet on the intestine development and as a consequence on the larvae growth.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
