DL-methionyl-DL-methionine as an efficient methionine source for promoting zootechnical performance and methionine-related pathways in the whiteleg shrimp ().

Methionine (MET) supplementation is a current strategy to achieve shrimp requirement. Notwithstanding, the efficiency of the precisely formulated feeds can be diminished since shrimps are slow eaters and masticate feed externally that results in nutrient leaching. In this regard, a methionine dipeptide (DL-methionyl DL-methionine) benefits the feed industry by reducing MET water solubility while increasing its bioavailability.

Immune Status and Hepatic Antioxidant Capacity of Gilthead Seabream Juveniles Fed Yeast and Microalga Derived β-glucans.

This work aimed to evaluate the effects of dietary supplementation with β-glucans extracted from yeast () and microalga () on gene expression, oxidative stress biomarkers and plasma immune parameters in gilthead seabream () juveniles. A practical commercial diet was used as the control (CTRL), and three others based on CTRL were further supplemented with different β-glucan extracts. One was derived from (diet MG) and two different extracts of 21% and 37% -derived β-glucans (defined as Phaeo21 and Phaeo37), to give a final 0.

Acute hyperoxia induces systemic responses with no major changes in peripheral tissues in the Senegalese sole (Solea senegalensis Kaup, 1858).

Senegalese sole Solea senegalensis is currently farmed in recirculation aquaculture systems that often involve water re-oxygenation, which in turn may cause acute or prolonged hyperoxia exposures. In order to understand the impact of acute hyperoxia on the fish immune system and peripheral tissues such as gills and gut, Senegalese sole juveniles (30.05 ± 1.