Effect of diet composition on nutrient digestibility and digestive enzyme levels of gilthead sea bream (Sparus aurata L.)
By E. Fountoulaki, M. Alexis, I. Nengas, B. Venou. 2005
130 citations recorded by the source corpus.
An experiment was conducted to evaluate the effects of dietary composition on apparent digestibility coefficients of protein, fat and carbohydrate of gilthead sea bream. In addition α-amylase and proteolytic activities were measured in the digestive tract of fish, held at 20±1°C. Six experimental diets were formulated containing approximately 40%, 45% and 50% protein, 11% and 21% fat and a starch level which fluctuated from 14% to 36%. Fish having an average weight of 100–130 g were used, fed at 1.5% of their body weight daily, and digestibility was measured using an indirect method. Enzyme activities were measured in the digestive tract of fish, fed diets containing a combination of 40%, 50% protein with 11%, 21% fat at 0.5, 5, 10, 24 h after a single meal. Starch digestibility was reduced with its level in the diet. It also negatively affected fat digestibility as well as protein digestibility, the last only at the high fat level. Dietary fat level had a negative effect on starch and protein digestibility. Fat affected also strongly α-amylase levels in the digestive tract, while its effect on protease activity was of smaller magnitude. These results indicate that digestive enzyme activities and nutrient digestibility values are affected by dietary composition, carbohydrates and fat indicating the strongest effect.
Subfields: Aquatic Science, Immunology, Physiology
View Paper: https://www.semanticscholar.org/paper/cfe820add7a523e8a90ea452a07089227a516cc5
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Citations in the corpus
- Influence of dietary levels of soybean meal on the performance and gut histology of gilthead sea bream (Sparus aurata L.) and European sea bass (Dicentrarchus labrax L.) (2008, background): “…of SBM in agreement with r 2008 TheAuthors 976 Journal Compilationr 2008 Blackwell Publishing Ltd, Aquaculture Research, 39, 970^978 studies with other ¢sh species (Refstie, Storebakken, Baeverfjord & Roem 2001), as well as with sea bream (Fountoulaki et al. 2005) or sea bass (Tibaldi et al. 2006).”
- Influence of partial substitution of dietary fish meal on the activity of digestive enzymes in the intestinal brush border membrane of gilthead sea bream, Sparus aurata and goldfish, Carassius auratus (2010, background): “However, the digestion and absorption of the nutrients directly depend on the activity of the digestive enzymes, in particular those located in the brush border section of the intestine, which are responsible for the final stages of breaking down and assimilation of food (Fountoulaki et al., 2005).”