BACKGROUND: Vitamins are considered an essential part in diet of aquatic animals. OBJECTIVES: This study was carried out to assay the effect of different levels of vitamin E on growth performance, carcass compositions and blood parameters of common carp fingerlings (Cyprinus carpio). METHODS: Total number of 96 common carp fingerlings weighing 15.49 ± 3.64 g were randomly distributed into 12 fiberglass tanks in four treatments group including control (without added vitamin), 100, 200 and 400 mg/kg vitamin E in three replicates and kept at a density of 8 fish per tank for 10 weeks. RESULTS: Results showed that the highest weight gain, percentage of body weight increase, mean daily growth, specific growth rate, condition factor and the lowest food conversation ratio were observed in fish fed with 200mg/kg vitamin E but no significant differences were seen compared to other treatments (p>0.05). Fish fed with 200mg/kg vitamin E had the highest (p>0.05) contents of protein and ash compared to control group. There was an increase in values of RBC, Hct and Hb in fish fed with 100, 200 and 400 mg/kg vitamin E in comparison with control group. Significant differences were observed in MCHC in fish fed with 100 mg/kg vitamin E compared to control and fish fed with 400 mg/kg, also treatment 200 mg/kg with treatment 400 mg/kg vitamin E (p<0.05). Fish fed vitamin E in 200 and 100 mg/kg had the highest WBC count. Fish fed with different levels of vitamin E had higher lymphocyte in comparison with control group and fish fed with 100 mg/kg had significant difference with control in lymphocyte (p<0.05). CONCLUSIONS: Vitamin E in level of 200 mg/kg can play an important role to enhance growth performance, nutrition efficiency and improving blood indices and support cell immunity in common carp fingerlings.

BACKGROUND: In traditional medicine in some Asian countries, including Iran, there is a belief that camphor is a suppressor of sexual activity. Not only has the validity of this hypothesis not been established, but also studies in this field are very limited.  OBJECTIVES: In this study, we investigated the effects of camphor on sperm quality in mice, and to protect sperm damage vitamin E as an antioxidant was used. METHODS: This study was conducted on 30 adult male mice (balb/c) with weight range 20-25 gr in 5 groups. First group was control (CO) and treated with normal saline,  groups  2 and 3 were sham groups treated respectively with Olive oil (OL) and the combination of olive oil and vitamin E (OL+E), and finally, two experimental groups were treated using camphor (CA) and camphor with vitamin E (CA+E). Camphor at doses of 30 mg/kg/day and vitamin E at doses of 100 mg/kg/day were prepared. All materials were administered orally (gavage). After 35 days semen were collected from tail of epididymis, and then total count, motility, viability, nuclear maturity, and DNA damage were examined. RESULTS: Results showed significant reduction in sperm total count, percentage of viability, increase in  the number of immature sperms and  no significant difference in rate of motile sperms and sperms with damaged DNA in groups that received Camphor was observed. Vitamin E as a strong antioxidant administered lightly was able to reduce the effects of  Camphor on viable and mature sperms (p<0.05). CONCLUSIONS: It can be concluded that Camphor could affect on mice sperm quality and vitamin E as an antioxidant,  was able to slightly reduce Camphor effects in sperm quality.

This study was conducted to assess the effect of dietary supplementation of vitamin E and selenium on Japanese quail broilers. This trial was conducted in 525 Japanese quail birds from day- old to five weeks of age. Experimental birds were randomly divided into seven groups viz.T1Control:  Basal diet (standard Japanese quail ration), T2 Basal diet with vitamin E 150mg/kg, T3 Basal diet with vitamin E 300 mg/kg, T4 Basal diet with selenium 0.3mg/kg, T5 Basal diet with selenium 0.6mg/kg,T6 Basal diet with combination of vitamin E 150mg/kg and selenium 0.3mg/kg, T7 Basal diet with combination of vitamin E 300mg/kg and selenium 0.6mg/kg. Dietary supplementation with the combination of vitamin E 300mg/kg and selenium 0.6mg/kg resulted in significantly higher body weight, better feed efficiency, livability percentage and also enrichment of alpha-tocopherol and selenium level of liver, thigh and breast muscles in the Japanese quail broilers.

This study was conducted to assess the effect of dietary supplementation of vitamin E and selenium on Japanese quail broilers. This trial was conducted in 525 Japanese quail birds from day- old to five weeks of age. Experimental birds were randomly divided into seven groups viz.T1Control:  Basal diet (standard Japanese quail ration), T2 Basal diet with vitamin E 150mg/kg, T3 Basal diet with vitamin E 300 mg/kg, T4 Basal diet with selenium 0.3mg/kg, T5 Basal diet with selenium 0.6mg/kg,T6 Basal diet with combination of vitamin E 150mg/kg and selenium 0.3mg/kg, T7 Basal diet with combination of vitamin E 300mg/kg and selenium 0.6mg/kg. Dietary supplementation with the combination of vitamin E 300mg/kg and selenium 0.6mg/kg resulted in significantly higher body weight, better feed efficiency, livability percentage and also enrichment of alpha-tocopherol and selenium level of liver, thigh and breast muscles in the Japanese quail broilers.

An experiment was conducted to study the influence of sprouted green gram, selenium and vitamin E and their combinations on reproductive performance like semen quality and fertility for a period of five weeks with forty two adult White Leghorn cocks and seventy White Leghorn hens which were divided into seven treatment groups containing six cocks and ten hens for each treatment. The treatment groups consisted of control (T1), sprouted grains 50g/kg (T2), selenium 0.5mg/kg (T3), vitamin E 500mg/kg (T4), sprouted grains 50g/kg + selenium 0.5mg/kg (T5), sprouted grains 50g/kg + vitamin E 500mg/kg (T6) and sprouted grains 50g/kg + selenium 0.5mg/kg + vitamin E 500mg/kg (T7). Significant (P&lt;0.05) difference was observed between treatment groups. The overall sperm motility of treatment and control groups did not differ significantly. The sperm concentration was significantly (P&lt;0.05) higher in all treatment groups compared to control. &nbsp;Inclusion of sprouted green gram, selenium and vitamin E had significantly reduced the overall dead (P&lt;0.01) and abnormal (P&lt;0.05) sperms when compared to the control group.&nbsp;