Effect of mixed use of thyme and fennel oils on biochemical properties and electrolytes in rainbow trout as a response to Yersinia ruckeri infection

Abstract

The aim of study was to compare the effects of supplementation of food with herbal oils (Thymus vulgaris and Foeniculum vulgare) on biochemical properties and electrolytes of rainbow trout infected with Yersinia ruckeri. In total, 120 healthy fish (mean weight 84 ± 1.02 g) were equally divided into four experimental groups. The experimental study was carried out for one week. The first group was control without supplementation and infection, the second group was infected and without oil supplementation, the third group was supplemented with oils (10 ml·100 g -1 rates) for one week and infected with Y. ruckeri and the last group was oil supplemented without infection. Results indicated that fish fed with dietary supplements showed enhanced bactericidal activity, total protein, albumin, cholesterol, triglyceride and bilirubin compared to the control (P < 0.05). As the value of herbal oils was increased in diets, the plasma glucose level decreased. The levels of K, Na, Ca, and Mg increased whereas Cl values decreased, compared to the control. It can be concluded that diet supplementation with herb oils used in this study can increase disease resistance by increasing levels of some biochemical parameters and electrolytes in rainbow trout to Y. ruckeri infection.

Growth performance and haematological and immunological indices of rainbow trout (Oncorhynchus mykiss) fingerlings supplemented with dietary Ferulago angulata (Schlecht) Boiss

“…Diet supplementation with herb oils (Thymus vulgaris and Foeniculum vulgare) can increase disease resistance. Thyme and fennel oils can improve the immune system against Yersinia ruckeri infection by increasing some biochemical indices and electrolytes in rainbow trout (Kucukgul Gulec et al 2013). Similar immunological results have been shown in broiler chickens supplemented with F. angulata extract (Govahi et al 2013;Rostami et al 2015).…”

Growth performance, immune response and disease resistance of rainbow trout (Oncorhynchus mykiss) fedThymus vulgarisessential oils

“…However, the highest resistance (31.58% vz 4.76% in control fish) was seen in fish fed 0.5 ml/kg feed. Supplementation of thyme oils at 10 ml herbal essential oils (mixed thyme and fennel)/100 g feed for 21 days could improve resistance of rainbow trout against Yersinia ruckeri infection by increasing levels of some immunity factors (Gulec et al (). Gültepe et al () also showed that tilapia fed 1% thyme exhibited 78% survival compared to 39% in control fish after fish being challenged with Streptococcus iniae .…”

“…Thymus vulgaris has been widely distributed in Iran, and has long been used as herb especially in traditional medicine. Application of Thyme essential oils as dietary supplement has been demonstrated in some fish species including rainbow trout (Onchorhyuncus mykiss) (Kucukgul Gulec et al, 2013), common carp (Cyprinus carpio) (ALsafah & AL-Faragi, 2017) and gibel carp (Carassius gibelio) (Zadmajid & Mohammadi, 2017), but there is no available information about Thyme oils on immune related gene expression in rainbow trout (O. mykiss). The present work aimed to investigate the dietary administration of Thyme oils on growth performance, immune-related gene expression and disease resistance of rainbow trout juvenile.…”

The effect of essential plant oils on mineral composition of egg mass and blood parameters of laying hens

“…They found reduced blood total cholesterol. Gulec et al (2013) noted significantly higher (P<0.05) contents of total protein, albumin, cholesterol, triglycerides, bilirubin, K, Na, Ca and Mg after addition of plant oils (Thymus vulgaris and Foeniculum vulgare) compared to the control. Present findings are not in agreement with those presented by Levkut et al (2011) who observed that chickens fed oregano oil supplemented diet had significantly higher serum magnesium concentration and slightly lower serum phosphorus level in comparison with birds from control group.…”

“…However, the sensory quality of eggs isn´t often affects (Garcia-Rebollar et al, 2008). The addition plant oils have positive effect on contents of total protein, albumin, cholesterol, triglycerides (TG), bilirubin, K, Na, Ca and Mg in blood serum (Gulec et al 2013). Flaxseed is emerging as one of the key sources of phytochemicals in the functional food area.…”