The aim of the study is to determine effect feed type (Daphnia pulex-based and Dajana nano gran brand) on water quality (presence microorganisms suspended solids) growth survival Macrobrachium rosenbergii shrimp larvae. implementation plan involved 4 groups shrimps placed under same conditions, which were evaluated for 14 weeks through periodic observations biometrics. data obtained recorded si...

AIM The present study was performed to utilize the shrimp shell waste for chitin and chitosan production, characterization by Fourier transform infrared (FT-IR) technique and to evaluate the antimicrobial effects of chitosan oligomers produced by depolymerization of chitosan by nitrous acid. MATERIALS AND METHODS Chitosan was extracted from the shrimp shell waste by the chemical method and ch...

The shrimp industry in Central America has grown significantly. Much waste is generated by this industry because of the high percentage of shrimp heads, exoskeletons, and soluble components lost during processing. The objective of this study was to measure the effect of substituting different levels of shrimp meal (SM) for soybean meal (SBM) in layer diets. A control corn-soybean layer diet and...

Correct management of the feeding regime in shrimp aquaculture has been beneficial. Still, when looking for improvement performance, results have contradictory, and limits between better growth independent as a function are not clear. In this study, trypsin α-amylase activity, well an interpretation energy utilized enzyme production, were evaluated weighing 1 g. Four groups set to feed one, two...

The penaeid shrimp farming industry is a fast-growing sector which continues to suffer from significant feeding inefficiencies. Shrimp are slow feed on pellets, with consumption dependent wide range of environmental and physiological parameters. Feed management farms remains mainly based trays can be difficult observe often result in overfeeding. While our understanding behaviour beginning impr...

We report three new cases of allergy to Gammarus, two of them involving cutaneous symptoms, and the third one with occupational asthma. The results showed exposure to feed containing Gammarus shrimp to be the main cause of the allergic symptoms in the three patients. In all cases the intervention of IgE was demonstrated, with the absence of cross-reactions with other common allergenic arthropods.

As earlier observations on peroral infectivity of WSSV in white-legged shrimp are conflicting, here, a standardized peroral intubation technique was used to examine (i) the role of the physical composition of the viral inoculum and (ii) the barrier function of the PM. In a first experiment, the infectivity of a WSSV stock was compared by determining the SID50 by intramuscular injection, peroral...