The Effect of Different Feeding Applications on the Swimming Behaviour of Siberian Sturgeon: A Method for Improving Restocking Programmes.

Restocking programmes of different fish species have been implemented worldwide. However, the survival of hatchery-reared fish after release to riverine ecosystems is at a very low level. One of the reasons for the high mortality rate of post-released fish is their modified swimming behaviour due to the hatchery rearing practice.

Effects of Garlic Powder on Nutrient Digestibility, Haematology, and Immune and Stress Responses in Eurasian Perch Juveniles.

The supplementation of fish diets with phytogenics can increase growth performance and can modulate immune system response. European perch (initial weight 25.0 ± 0.

Effect of Humic Substances as Feed Additive on the Growth Performance, Antioxidant Status, and Health Condition of African Catfish (, Burchell 1822).

In the present study, a possible nature immunostimulant and growth promoter-humic substances (HS) originating from Siberian leonardite mineraloid-were tested on juvenile performance. Feed additive was applied onto commercial pelleted feed at four HS levels-0, 1, 3, and 6% w/w (HS0, HS1, HS3, HS6, respectively). Diets were tested in five repetitions (in total, = 1800 individuals, mean body weight 28.

Comparison of Quality Changes in Eurasian Perch ( L.) Fillets Originated from Two Different Rearing Systems during Frozen and Refrigerated Storage.

The current knowledge on how different Eurasian perch rearing systems impact the final fillet quality is scant. Therefore, two domestic storage conditions were investigated-10 months frozen (-20 °C) and 12 days refrigerated (+4 °C) storage conditions-in order to determine (i) how the choice of rearing system affects fillets quality during different processing conditions and (ii) if oxidative changes and other quality parameters were interactive. For the proposed idea, proteome analysis, oxidative changes, and some quality parameters were considered in this study.

Partially Defatted Larva Meal in Diet of Eurasian Perch () Juveniles.

Insect meal is gaining increased attention in aquafeed formulations due to high protein content and an essential amino acid profile similar to that of fishmeal. To investigate insect meal in feed for European perch , a promising candidate for European intensive culture, we replaced standard fishmeal with partially defatted black soldier fly larva meal at rates of 0%, 20%, 40% and 60% (groups CON, H20, H40 and H60, respectively) and compared growth performance, somatic indices, hematological parameters, whole-body proximate composition and occurrence of spleen lipidosis. In addition, we assessed the economic and environmental sustainability of the tested feeds by calculating economic conversion ratio (ECR) and economic profit index (EPI).