İncir ve Biberiye Ekstraktlarının Gökkuşağı Alabalığı (Oncorhynchus mykiss)’nda Gelişim Performansı ve Kan Prametreleri Üzerine Etkileri

Abstract

In this study the effects of dietary fig and rosemary extract supplementation on growth performance, feed utilization, biometric indexes and some blood parameters in rainbow trout (Oncorhynchus mykiss) were investigated. Two experimental diets were supplemented with medicinal herb extracts at 0,5,1,2 g/kg. The fish were fed 60 days of trial diet. The addition of fig extract and rosemary extract did not have a positive effect on development and feed intake. In addition, the addition of fig extract and rosemary extract did not cause a change in the number of red blood cell count, hematocrit, hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration (P>0.05). However, the addition of fig extract and rosemary extract to the feed increased the spleen somatic index, while decreasing viscerosomatic index and hepatosomatic index (P<0.05).

Efficacy of vitamin E with or without probiotic, astaxanthin or rosemary extract on growth performance, survival, haematological parameters, antioxidant activity and liver enzymes in rainbow trout ( Oncorhynchus mykiss )

“…In the present study, diet containing 500 mg kg −1 rosemary extract (diet K) presented an insignificant effect on the growth performance of rainbow trout. Rainbow trout fingerlings fed 500-2000 mg kg −1 rosemary extract for 60 days exhibited no significant difference in WG (Yilmaz & Murat, 2019). Other researchers also observe no significant effect on growth performance when rainbow trout were fed rosemary extract at 250-15,000 mg kg −1 for 60 days (Kivrak & Didinen, 2017;Sahin et al, 2017).…”