Effects of binder type and binder addition on the growth of juvenile Palaemonetes varians and Palaemon elegans (Crustacea: Palaemonidae)
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This investigation compared the effects of using two binders of no nutritional value, lignosol and agar, and the binding method, microbinding and microcoating, on the growth of juvenile Atlantic ditch shrimp, Palaemonetes varians, and rockpool prawn, Palaemon elegans. Shrimp were fed one basal diet which varied solely in binder type and method of inclusion (Diet A, with lignosol added by microbinding, Diet B, with agar added by microbinding, and Diet C with lignosol added by microcoating) for a period of 45 days. At the end of the experiment significant differences in the final wet weight were found between shrimps fed Diet A and Diet C and between shrimps fed Diet B and Diet C (P < 0.001), but no significant differences were found between Diet A and Diet B (P > 0.05). These results were verified for both species. Significant differences were found between the linear regression slopes of the three tested diets for P. varians (F 3,411 = 3.41; P < 0.04), and for P. elegans (F 3,431 = 10.51; P < 0.0003). Palaemon elegans grew faster than P. varians and at the end of the experiment significant differences were found between the final wet weight of the two species (F 3,842 = 48.17, P < 0.0001). The growth parameters analysed, weight gain (WG), thermal-unit growth coefficient (TGC), and food conversion rate (FCR) were always higher for P. elegans. Results indicate that use of either lignosol or agar, added to the diet by microbinding, is advisable.
KeywordsAgar Binders Lignosol Microcoating Microbinding Shrimp
Jorge Palma was supported by a Post-doctoral grant SFRH/BPD/11604/2002, and the project “AQUASEPIA: Development of aquaculture techniques for the cuttlefish, Sepia officinalis”, funded by the Agência de Inovação, Portugal.
- AOAC (1995) Official methods of analysis of AOAC international, 16th ed agricultural chemicals; Contaminants drugs, vol I. AOAC International, ArlingtonGoogle Scholar
- Calado R, Morais S, Narciso L (2001a) Temperate shrimp: perspective use as ornamental species. Book of abstracts, marine ornamentals 2001. University of Florida, Sea Grant Florida and National, Florida Department of Agriculture, Orlando, USAGoogle Scholar
- Calado R, Martins C, Santos O, Narciso L (2001b) Larval development of the Mediterranean cleaner shrimp Lysmata seticaudata (Risso, 1816) (Caridea: Hippolytidae) fed on different diets-costs and benefits of mark time molting. In: Hendry CI, Van Stappen G, Wille P, Sorgeloos P (eds), Larvi ’01 fish and crustacean larviculture symposium. European aquaculture society, Special publicationGoogle Scholar
- DeSilva SS, Anderson TA (1995) Fish nutrition in aquaculture. Chapman and Hall Aquaculture Series, LondonGoogle Scholar
- Dominy WG, Lim C (1991) Performance of binders in pelleted shrimp diets. In: Akiyama DM, Tan RKH (eds) Proceedings of the aquaculture feed processing and nutrition workshop, America Soybean Association, Singapore, 1991Google Scholar
- Hardy RW, Barrows FT (2002) Diet formulation and manufacture. In: Halver JE, Hardy RW (eds) Fish nutrition. Academic Press, San DiegoGoogle Scholar
- Oliva-Teles A (1985) Protein requirements of Palaemon elegans (L.). Pub Inst Zool Dr Augusto Nobre No 189 1–9Google Scholar