TY - JOUR ID - 4223 TI - Effects of supplementing diet with the alcoholic and nanoencapsulated nettle (Urtica dioica) extracts on growth performance and hematological indices of rainbow trout (Oncorhynchus mykiss) JO - Aquatic Animals Nutrition JA - JANB LA - en SN - AU - graily afra, abbas AU - Darroudi, Masoud AU - Darroudi, Masoud AU - Ouraji, Hossein AU - Keramat, Abdolsamad AU - Safari, Reza AD - Fisheries Department, Sari University of Agricultural Sciences and Natural Resources, Sari, Mazandaran, Iran AD - AD - Caspian Sea Ecology Research Center (CSERC), Sari, Mazandaran, Iran Y1 - 2020 PY - 2020 VL - 5 IS - 2 SP - 101 EP - 113 KW - Rainbow trout KW - Nettle KW - Urtica dioica KW - Growth KW - Immunity DO - 10.22124/janb.2020.16465.1090 N2 - This study was carried out to evaluate the effects of alcoholic and nanoencapsulated nettle (Urtica dioica) extracts on growth performance and hematological indices of rainbow trout (Oncorhynchus mykiss). A total of 225 rainbow trout with an average initial weight of 23 ± 0.16 g (mean ± standard deviation) were fed with five diets supplemented with 0% (control group), 1% alcoholic extract (A1), 2% alcoholic extract (A2), 1% nanoparticle extract (N1) and 2% nanoparticle extract (N2) for 8 weeks. The treatments A2 and N2 showed significantly higher final weight and specific growth rate compared to the control as well as  A1 and N1. The experimental diets exhibited significant effects on some hematological indices, such that the highest levels of white blood cells, lymphocytes, total protein, albumin and also lysozyme activity were observed in A2 and N2. These results suggested that supplementing diet with the alcoholic and nanoencapsulated nettle extracts enhance immunity, and promote fish growth. UR - https://janb.guilan.ac.ir/article_4223.html L1 - https://janb.guilan.ac.ir/article_4223_b1d31f177e82a8345da20b12485d7a78.pdf ER -