Effects of dietary astaxanthin and vitamin E and their interactions on the growth performance, pigmentation, digestive enzyme activity of kuruma shrimp (Marsupenaeus japonicus )

Abstract

A 56‐day feeding trial was done to investigate the interactive effects of astaxanthin (Ax) and vitamin E (α‐Toc) on the performance of kuruma shrimp (Marsupenaeus japonicus). A 2 × 3 factorial experiment was conducted with six experimental diets containing two levels of Ax (0 and 0.6 g/kg diet [Ax0 and Ax0.6]) and three levels of α‐Toc (0, 0.2 and 1 g/kg diet [α‐Toc0, α‐Toc0.2 and α‐Toc1]). The results indicated that growth performance was significantly (p < 0.05) increased in shrimp fed with the Ax0.6 × α‐Toc0.2 diet. Interactive effects between Ax and α‐Toc on the growth parameters were observed. Furthermore, pigmentation performance was significantly (p < 0.05) better in the Ax0.6 groups. Interaction between Ax and α‐Toc was also found in the Ax content of shrimp body parts. Interestingly, dietary α‐Toc helped to reduce the Ax consumption rate, promote the absorption and increase the deposition of Ax in the muscle. Shrimps from the Ax0.6 groups showed significantly (p < 0.05) improved hepatopancreatic digestive enzyme activities compared with those of the Ax0 groups. Although no interactive (p > 0.05) effects were found between dietary α‐Toc and Ax on total haemocyte count and tolerance against freshwater, dietary Ax and α‐Toc supplementation showed better performance on these two parameters. It was concluded that dietary Ax and α‐Toc functioned synergistically, and the shrimp fed with the diet containing 0.6 g Ax/kg diet Ax and 0.2 g α‐Toc/kg diet showed improved growth and pigmentation performance compared with the other groups in the current study.

Effects of feeding regimen of dietaryAspergillus oryzaeon the growth performance, intestinal morphometry and blood profile of Nile tilapia (Oreochromis niloticus)

“…There is a growing interest in the use of functional feed additives as alternative strategy to increase the productivity and for the prevention of diseases in aquaculture (Faggio, Fazio, Marafioti, Arfuso, & Piccione, ; Guardiola et al, ; Hoseinifar, Sun, Wang, & Zhou, ; Hoseinifar, Yousefi, et al, ; Iswarya et al, ; Wang et al, ; Yan, Guo, Dawood, & Gao, ). The application of probiotics in aquaculture has become more prominent across the feed industry due to their growth‐promoting activity (Carbone & Faggio, ; Dawood, Koshio, Abdel‐Daim, & Van Doan, ).…”

Transcriptome analysis reveals the effects of sand substrate removal and body colour change of kuruma shrimp, Marsupenaeus japonicus

“…The transcriptome analysis also showed that genes involved in carbohydrate metabolism, lipid metabolism, immune system and endocrine system were significantly enriched in both gill and hepatopancreas, indicating when kuruma shrimp was cultured without sand substrates, its metabolism was critically affected. The digestive enzyme activity plays an important role in nutritional physiology in the crustacean, was directly or indirectly involved in the growth and moulting cycle (Sudtongkong et al., 2019; Wang et al., 2019). Among them, amylase is a well‐known digestive enzyme (Castro et al., 2012; Sakai et al., 2004).…”

“…Sphingolipids play a key role in cells as structural components of membrane lipid bilayers and signalling molecules, implicating its important function in the physiological processes (Aguilera‐Romero et al., 2014). Different from many other animals, shrimp hepatopancreas combines the functions of the pancreas, intestine and liver, playing a vital role in shrimp (Wang et al., 2019). The inhibition of the genes involved in various essential activities is likely responsible for the relatively slow growth of kuruma shrimp cultured without sand substrates.…”

“…Among many factors affects the rapid transmission, the sand substrates at the bottom of shrimp ponds cannot be ignored. In shrimp farms, sand substrates inside the shrimp ponds are important for shrimp's growth, especially for kuruma shrimp which has a habit of sand diving (Dabbagh & Kamrani, 2011; Luchiari et al., 2012; Wang et al., 2018, 2019). The substrates contain sand and mud, providing a living place for microorganisms and benthic organisms.…”

Interactive effects of dietary astaxanthin and cholesterol on the growth, pigmentation, fatty acid analysis, immune response and stress resistance of kuruma shrimp ( Marsupenaeus japonicus )

“…Lipase activity was analysed by using olive oil emulsion as the substrate according to Mustafa, Karmali, and Abdelmoez (). Amylase activity was analysed by using starch as the substrate according to Shiu et al () and Wang et al ().…”