Effect of Angelica archangelica L. extract on growth performance, meat quality and biochemical blood parameters of rainbow trout {Oncorhynchus mykiss W.), cultivated in a recirculating system

摘要

The medicinal herbs as natural products can be use like not expensive additives in artificial diets for aquatic animals which are safe for fish and the environment. The purpose of this study is to determine the effect of the Angelica archangelica L. extract on the growth performance, meat quality and biochemical blood parameters (glucose, urea, creatinine, total protein, albumin, AS AT, ALAT, ALP, Ca, P, Mg, triglycerides, cholesterol) of rainbow trout {Oncorhynchus mykiss). Thirty specimens from therainbow trout with anaverage weight of 42.55±7.48 g (control, C) and 42.51±6.02 g (experimental, Ang.a.) in good health condition were placed in each tank and cultivated for 60 days. A control group (no added) and an experimental (with added 433 mg.kg'' of angelica extract) option, each with a two repetition, were set in a recirculating system in the Aquaculture Base of the Faculty of Agriculture at the Trakia University. At the end of the experiment were calculated average final weight, specific growth rates, feed conversion ratio, meat quality and blood biochemical parameters. The average individual weight gain of rainbow trout from the group fed withri. archangelica extract supplemented was 84.61±0.06 g which was with 15.01% higher compared to this one of control fish and the differences were statistically significant (P < 0.05). The blood biochemical parameters glucose, urea, albumin, ALP, ASAT, cholesterol in control variant were higher compare to values of this parameter of fish from the experimental (P > 0.05). Better growth performance and blood parameters were measured in trout fed with angelica supplement.