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- Title
Detoxified Jatropha curcas kernel meal as a dietary protein source: growth performance, nutrient utilization and digestive enzymes in common carp ( Cyprinus carpio L.) fingerlings.
- Authors
KUMAR, V.; MAKKAR, H.P.S.; BECKER, K.
- Abstract
Jatropha curcas kernel meal is rich in protein; however, it is toxic. Two durations of detoxification process were investigated: 30 and 60 min; designated as J and J, respectively. Common carp fingerlings (252 fish; 3.2 ± 0.07 g) were fed diets: control containing fishmeal (FM); S, J and J: 50% of FM protein replaced by soybean meal (SBM), detoxified Jatropha kernel meal (DJKM and DJKM); S, J and J: 75% of FM protein replaced by SBM, DJKM and DJKM. Highest body mass gain, specific growth rate, metabolic growth rate (MGR) and energy production value were observed for the J group which were statistically similar to that for control group and significantly ( P < 0.05) higher than for all other groups. Lowest feed gain ratio was observed in control group, which was statistically similar to than in J group. Lowest MGR, protein efficiency ratio, protein productive value and lipid production value were observed in J group. The dry matter and lipid digestibilities were statistically ( P < 0.05) highest in control group and lowest in J group. Protein and energy digestibilities were statistically similar ( P > 0.05) for control and J groups, and these values were highest among the groups. Highest crude protein efficiency was observed in J group, whereas lowest in J group. Relative intestinal length and hepatosomatic index were higher in plant protein-fed groups. Intestinal amylase, protease and lipase activities for control group were statistically higher ( P < 0.05) than for plant protein-fed groups. Conclusively, performance of J group was similar to control group and better than other groups and, thus, is recommended as the most optimal diet for common carp fingerlings.
- Subjects
EUPHORBIA; PROTEIN content of food; CARP; FISH growth; FISH nutrition; DIGESTIVE enzymes; CONTROL groups
- Publication
Aquaculture Nutrition, 2011, Vol 17, Issue 3, p313
- ISSN
1353-5773
- Publication type
Article
- DOI
10.1111/j.1365-2095.2010.00777.x