Evaluation effectiveness of methods for regulating the coloring of whiteleg shrimp Penaeus vannamei in aquaculture
2021
Borisov, R.R. | Nikonova, I.N. | Parshin-Chudin, A.V. | Kovacheva, N.P.
During steps of technology adjustment of cultivation whiteleg shrimp Penaeus vannamei juvenile to commercial size in recirculating aquaculture system influence of feed composition and containers color on shrimp coloring was studied. Three experiments were carried out in which we used three types of feeds (compound feed for shrimps Gemma Diamond (France); compound feeds for bottom fish and crustaceans Tetra Min Granules and Tetra Wafer Mix (Germany); containers in blue and black, as well as with a black bottom and blue walls. Tetra’s feeds contain astaxanthin-rich brine shrimp artemia. At the end of the experiment all shrimps were photographed. The color indexes of shrimps were estimated in the CIELab color space in Adobe Photoshop program. The experiments have shown that the use of black containers and feeds with a high content of astaxanthin in the whiteleg shrimp P. vannamei cultivation permits one to get the darkest coloring of individuals. The color tone and, in part, the intensity of the shrimp coloring depended on the amount of astaxanthin in the feed. The brightness characteristics of the coloring largely depended on the color of the bottom and walls of the containers. In black containers, the shrimp had a darker color than in blue containers or containers with black bottom and blue walls
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