Evaluation of dietary supplementation of aqueous extract of brown algae Sargassum cristaefolium on growth performance and feed utilization of juvenile white shrimp Litopenaeus vannamei.
Year: 2015
Type: article
Abstract: A 42-day indoor feeding trial was conducted to evaluate the growth performance and feed \nutilization of juvenile white shrimp Litopenaeus vannamei fed with diets containing different supplement \nlevels of hot-water extract of brown tropical macro algae Sargassum cristaefolium extract. The \ncommercial white shrimp feeds containing 36% crude protein were incorporated with graded levels of \nbrown algae S. cristaefolium extract (0, 200, 600, 1000 and 1400 mg kg-1) and used in the feeding trial. \nShrimp (mean initial weight, 2.65±0.11 g) were fed three times daily ad libitum at an initial feeding \nallowance of 8% total body weight day-1. A completely randomized design was used in the study and \nshrimp were stocked at a density of 10 animals 30 L-1 black round plastic tank in triplicates. Results \nshowed that the different levels of dietary brown algae extract supplement did not significatly affect (p > \n0.05) on final body weight (10.6-11.3 g shrimp-1), survival (80-96.7%), and total moulting shrimp (36- \n48 times). In terms of weight gain and average daily growth (ADG), the diets with no algae extract \nsupplement and the highest extract inclusion level of 1400 mg kg-1 diet seemed to have better \nperformance (p < 0.05) than other diets. However, the shrimp fed diets containing S. cristaefolium \nextract at 200, 600 and 1000 mg kg-1 diet showed a better feed utilization (Feed Conversion Ratio (FCR) \n1.8-2.0; Protein Efficiency Ratio (PER) 1.40-1.56) than those of shrimp fed the algae extract at levels of \n0 mg and 1400 mg kg-1 diet (FCR 2.38-2.47; PER 1.13-1.17). The results indicated that dietary S. \ncristaefolium extract supplementation had a significant influence (p < 0.05) on feed utilization. Shrimp \nfed the 200-1000 mg algae extract kg-1 diet had a significantly better FCR and PER (p < 0.05) than the \nshrimp fed the 0 mg and 1400 mg algae extract. These results suggest that supplementation of S. \ncristaefolium extract at a dose of 200-1000 mg kg-1 can be used to get a better feed utilization \nperformance (reduce 22% FCR and enhance 27.8% PER) of juvenile white shrimp L. vannamei. \nHowever, a dose of 600 mg S. cristaefolium extract kg-1 diet is recommeded to add in diet to get a better \nFCR and PER performance of juvenile L. vannamei
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
SDGs: Life below water, Zero hunger
Open Access status: green
Funder: Universitas Diponegoro
OpenAlex ID: W2199048827