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- Title
Antinutritive effects of galactomannan-rich endosperm of Sesbania ( Sesbania aculeata) seeds on growth and feed utilization in tilapia, Oreochromis niloticus.
- Authors
Hossain, M. A.; Focken, U.; Becker, K.
- Abstract
An 8-week feeding trial was conducted using tilapia, Oreochromis niloticus L., in a recirculation system maintained at 27±0.2°C to observe the negative effects of Sesbania endosperm on growth and nutrient utilization. Five experimental diets were formulated to contain 32% protein, of which fishmeal was the major source. Endosperm separated from Sesbania seeds was included at levels of 0.0%, 2.9%, 5.8%, 8.7% and 11.6% in diets 1 (control), 2, 3, 4 and 5, respectively, equivalent to levels of 0.0%, 9.7%, 19.4%, 29.1% and 38.8%, respectively, of whole Sesbania seeds. Each treatment had two replicates, eight fish per replicate, with a mean initial live weight of 5.2±0.1 g. Fish were fed 20 g per kg metabolic body weight of fish daily. The body weight gain, metabolic growth rate, feed conversion ratio, protein efficiency ratio, protein productive value and energy retention of fish fed the control and diet 2 were significantly better ( P<0.05) than those of fish fed the other diets. Physical observation showed that the intestines of the fish fed diets that included endosperm contained loose, viscous and sticky material. Fish fed diets 3, 4 and 5 had a lower proportion of dry matter in their faeces, and lower apparent crude lipid and energy digestibility coefficients compared with fish fed the control diet and diet 2. They also had significantly reduced levels of muscle and plasma cholesterol, whole-body crude protein, lipid and gross energy.
- Subjects
TILAPIA; SESBANIA; METABOLISM; GROWTH rate; CHOLESTEROL; AQUACULTURE
- Publication
Aquaculture Research, 2003, Vol 34, Issue 13, p1171
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1046/j.1365-2109.2003.00924.x