Effects of carnitine on growth, survival and body composition of juvenile Tiger shrimp (Penaeus monodon Fabricius 1798) in pond culture (Iloilo, Philippines)
- Publication Type
- Diplom thesis
- Authors
- Groth, A.
- Year of publication
- 1997
- Editor
- Saint-Paul, U.; Becker, K.
- Keywords
- aquaculture, carnitine, shrimp
To evaluate the effects of feed supplementation with carnitine on growth, survival and body composition on juvenile Penaeus monodon (Fabricius 1798), an experiment was carried out in three earthen ponds (500 m2< each) during the dry season (Nov. 1994 - Mar. 1995, 19 weeks) in Iloilo, Philippines.
The shrimps (initial body weight 0.35 g, sd 0.47) were stocked at a density of 7 individuals/m2. Three feeding groups received a formulated diet supplemented with different amounts of L-carnitine (86.0, 145.5 and 273.5 ppm); the control group received unsupplemented feed (carnitine content 22.5 ppm). Each pond contained all four feeding groups, which were separated by screens. Environmental parameters were monitored. Sampling was carried out in monthly intervals. Growth was determined and shrimp tissue was analysed for proximate composition (crude protein, crude fat, ash, NFE) and gross energy. Gut contents were analysed microscopically. The survival was determined at harvest.