Stress response and lipid composition in shrimpLitopenaeus vannameifed diets enriched with squid or scallop viscera meal

Abstract

We substituted 10% of fishmeal with scallop (Argopecten ventricosus) or squid (Dosidiscus gigas) by‐product meal in a feed for shrimp (Litopenaeus vannamei) growth assay that lasted 60 days and then shrimps were submitted to handling stress. Shrimp fed the control diet had smaller weight gain and lower recovery after stress. Prostaglandins in gills were affected by diet and stress, with significant differences in shrimp fed the control diet before and after the stress. Hydroperoxides were increased after stress, while isoprostanoids were higher in shrimp fed the control diet. The gene expression of Glutathione peroxidase and Catalase was increased on the stressed shrimp fed the scallop diet, with no differences among diets for Superoxide dismutase or Cyclooxygenase. Arachidonic acid in the phospholipid fraction of muscle was the only fatty acid affected by stress and diet. Cholesterol oxidation products were significantly higher in shrimp fed the scallop diet compared to shrimp fed the control diet before applying the stress. A PCA analysis grouped in one‐factor growth variables, as well as Superoxide dismutase, esterified astaxanthin and isoprostane, while another factor was determined by stress, prostaglandin and hydroperoxide levels in gills. The partial substitution of fishmeal with scallop of squid by‐product meals affected growth and stress differently, indicating shrimp that grew up more were not necessarily more tolerant to handling stress, which can have a strong repercussion in aquaculture, particularly during density control, recording of growth and harvest.

Marine protein hydrolysates as a substitute of squid‐liver powder in diets for Pacific white shrimp ( Litopenaeus vannamei )

“…Squid meal, squid‐liver powder (SLP) and viscera meal from the processing of squid or cuttlefish are generally used as feed attractants in fish and shrimp diets (Suresh & Nates, 2011), thus enhancing the growth and feed utilization of these animals (Navarro et al, 2020). The growth of Japanese seabass ( Lateolabrax japonicus ) was reported to be enhanced by dietary supplementation of squid viscera meal compared to the growth of those fed a high‐FM diet (Mai et al, 2006).…”

Biochemical characterization of the cyclooxygenase enzyme in penaeid shrimp

“…and Gammarus sp. [22][23][24][25][26]. The presence of a COX enzyme has been proposed in the giant tiger prawn Macrobrachium rosenbergii based on positive immunostaining of prawn ovaries with an anti-COX1 antibody [27].…”