This study was conducted to evaluate the addition of three levels of cinnamon (Cinnamomum sp), 96 common carp Cyprinus carpio L. at a mean weight of 5±0.15 g/fish on four experimental diets with three replicates per treatment 0% with three experimental diets containing 0.75%, 1%, and 1.5% of the total diet 2, 3 and 4 respectively. The results of the statistical analysis showed significant differences in the parameters of the total weight increase, daily growth rate, relative growth rate, protein intake, feed conversion ratio and protein productive value between the control diet and the fish feeding on the fourth diet, meanwhile there were no a significant difference in final weight, food intake, protein efficiency ratio criteria. Chemical body analysis revered there were no a significant difference for dry weight, crude protein and ash, while cinnamon powder added have a significantly differences in body fat deposited. Based on the above results, 1.5% cinnamon can be added can improve the growth performance and nutritional value of common carp fish.

This study was conducted to investigate the effects additive cinnamon and coriander powders on growth, feed utilization, survival rate and body chemical composition, of common carp Cyprinus carpio L. for 56 days in class aquaria. 210 fish with initial weight 8±0.5gm\fish .Fish were acclimatized for 21 days before starting the feeding experiment to acclimatize the fish to the aquaria environment. Fish fed dietary cinnamon and coriander powders at levels of 1.25, 1.5, 1.75% against those fed diet without medical plant as control. Analysis of data showed there were significant differences (P≤ 0.05) for live body weight, weight gain, feed conversion ratio and protein retention. There were no significant differences among experimental diets with control for specific growth rate, survival rate, food consumption and protein consumption criteria. The addition of cinnamon and coriander powder resulted in a significant superiority (P≤ 0.05) in protein efficiency ratio and protein productive value, which depended on the added percentage of these two types of medicinal herbs. The percentage of dry matter and raw protein increased, while the percentage of fat decreased, and the ash content did not affect with the use of adding cinnamon and coriander powder in edible portion of experimental fishes.

The goal of this study was to isolate and identify the causative agents that causes death in Yankee Hatch / Erbil fingerling Cyprinus carpio and to investigate the effect of Cinnamon on the infected fish handled. Both Staphylococcus aureus and Escherichia coli are strongly isolate followed by Aeromonas hydrophila and Klebsiella pneumonia were isolated from liver, kidney and intestine which cause histopathological changes in these organs, characterized by fibrosis in liver, coagulative necrosis in renal tubules in the kidney and sever enteritis. Cinnamomum cassia added to the ration of infected fish at concentration 0.75, 1 and 1.5 % for eight weeks. The histopathological examination reveals that the 1.5% is best the percentage used as food additive for repair and regenerative tissue damage in the liver, kidney and intestine. These study conclude that C. cassia have been used as additive food in fish feed ration at 1.5% and have important role in regenerative tissue damage and keep fish in health status.

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The objective of this review is to compile and assess the findings of several studies on the use of Rocket (Eruca sativa) as feed additives or alternatives to fish nutrition. Antioxidant glucosinolates, flavonoids, and vitamins A and C are present in this plant, which has been shown to improve growth metrics and blood characteristics, according to the findings of the scientists. Effective oxidation against stress, the generation of free radicals, and pathogenic microorganisms, which enhances the health of fish and thus promotes growth and food utilization. In addition to its medical value as an alternative to antibiotics with negative side effects.

     This investigation was carried out to utilize common vetch Vicia sativa in formulating diets for 84 common carp Cyprinus carpio L. with initial weight 28±2g/fish were distributed randomly over seven experimental diets with three replications for each. The fish fed experimental diets for 56 days contained 30% and 45% of common vetch Vicia sativa of total diets which treated with germinated for 5 days (diet 2 and 3), 7 days (diet 4 and 5) and  the last diets contained crude vetch (diet 6 and 7). The statistical analysis of data showed that the fish fed at diet 3 was significantly different (P≤0.05) compared to fish fed at another diets in total weight, total weight gain, relative growth rate, specific growth rate and feed conversion ratio. It is in conclusion germinated common vetch seed can be successfully used as an inexpensive plant protein source at level of 45% (germinated seed for 5 days) in common carp diets without adverse effect on fish performance.

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