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Abstract: The present investigation was carried out to evaluate the amino acids composition of two important commercial freshwater fish yellow barbell (Carasobarbus luteus) and common carp (Cyprinus carpio) of Euphrates River. The chemical analysis was conducted and the results showed that total protein content (% dry weight) for C. luteus and for C. carpiowas 26.12 and 22.59%, respectively. The total fat content was 2.17 % and 4.04 % for C. luteus and C. carpio, respectively. The ash content for C.luteus was 1.5% and C. carpio was 2.96% while moisture content 71.15% for C. luteus and 71.0% for C. carpio, Amino acids ranged from 0.56 - 14.03% for C.luteus and 0.7- 13.11% for C. carpio fish. The most present amino acids were glycin, aspartic, tryptophan, and glutamic, which ranged from 8.22 to 14.03%. The essential amino acids in the two species were arginine, histidine, isoleucine, leucine, phenylalanine, threonine, tryptophan, and valine were detected. The percentage ranged from 0.56 - 11.69% for essential amino acids in two species to improve good health, protection, and reduce of diseases in humans and therefore an important source of nutrients.

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Abstract: The present study showed the protective effects of Vitamin Cby reducing the toxicity of cadmium on the hematological parameters in common carp during exposure period. The results of present study showed significant differences at P≤0.05 between treatments with cadmium and control, ascorbic acid only and ascorbic acidic cadmium on hematological parameters. The results also showed the effect of Vitamin C (ascorbic acid) to reduce cadmium toxicity after 7 to 14 days after chronic exposure to CdCl increased white blood cells number, mean 2 corpuscular volume, Mean Corpuscular Haemoglobin and decreased RBC, Hb content, PCV and the mean corpuscular hemoglobin concentration as compared to control were found. The exposure of cadmium with ascorbic acid the WBC, RBC decreased and Hb contents, RBC, the packed cell volume PCV increase values of these parameters as that in control groups when compared with cadmium exposure groups.

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Abstract: One of the most important problems during artificial reproduction of Common carp is the adhesion of its egg. Disposal of adhesive material on eggs increasing its hatching rate activity. In this research three different concentrations of Strawberry Juice were used (10, 15 and 20% respectively) to treat the eggs of Common carp fish in order to remove the adhesive materials comparing with the control (salt, urea and Tannin solutions). The results showed that using Strawberry Juice after eggs fertilization with concentration of 20 and15 % have the possibility of removing the adhesive substances with short time of about 5 and 7 minutes respectively with significant effect ( p>0.05) as compared with the control treatment which it takes about75 minutes to remove this substance. While the concentration of10 %the adhesive materials were not removed. Additionally there was a surpassing effect (p>0.05) at the rat of eggs fertilization and hatching in the both concentrations (15%; 20 %) which was higher than that treated with Tannin and fertilizing solution, and the results also showed that eggs at the two treatments (T2 and T3) with Strawberry Juice , have a shorter period of incubation which was(66 and 64 hours)as compared with the control (71 hours to hatches at 22Cº).

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Abstract: Laboratory experiments were conducted to compare the growth performance and feed efficiency of two groups, old (H1) and new (H2) of common carp Cyprinus carpio L. (97.37+0.33 g). Fishes of the H1 introduced to Iraq in 1982 and then their reproduction and farming began on a large scale, while fishes of the H2 was introduced to Iraq in 2009 by Inmaa Agricultural Enterprises Organization. H2 group indicated significantly (p<0.05) better performance in several studied parameters which included specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV), total apparent digestibility and apparent digestibility of protein and carbohydrates. This group also recorded significant (p<0.05) lower feed satiation level and fat deposited in the body compared to the old group (H1). Results of the current experiment concluded that there is a clear higher efficiency of the group H2 in most studied growth and feed efficiency parameters, which indicates the possibility of obtaining higher productivity and better economic profits when used in farming activities.33

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Abstract: The purpose of this research was to show the comparative analysis for fatty acids and amino acids in muscle tissues of two groups ofcommon carp (Cyprinus carpio L.) H1 (old production line, 1982) and H2 (the new production line,2009)which are important from economical,commercial and nutritional point of Iraqi consumer. These groups were farmed in floating cages at Euphrates River, Babylon province, Iraqlasted for 90 days. The fishes were fed on commercial diet ( @ Alear, Denmark ) with 30% protein and 7% fat. After finishing the experiment, allsamples were analyzed. There was a similarity in body components regarding to moisture, protein and ash proportions from both H1 and H2,whereas the total amount of fat content was high in H1(7.21%) and low in H2(4.12%). H2 has ability for body protein synthesis higher than fatdeposition as compared with H1.The saturated fatty acids (SFA) in fishes muscle was 34.24 and 27.79% in relation to total fatty acids (TFA) forH1 and H2 respectively. This is in turn reflects on SFA/ unsaturated fatty acids (USFA) which was in high ratio in H2 (2.61%) compared toH1(1.29%). Monounsaturated fatty acids constitute high part of TFA (45.08%) in H2 whereas was 39.23% in H1. The total SFA and MUFA waslow in muscle of H2. The SFA/PUFA nearest to 1 in H2 (0.98%). The ῳ6/ ῳ3 in H1 and H2 were 0.44-0.48. The muscles of common carp forboth groups contain all essential amino acids (EAA) but in different proportions. Although there were individual differences, some of them weresignificant in the ratios of essential and nonessential amino acids between the two groups of fish. The total ratios of essential and nonessentialamino acids did not show significant differences and were similar between the two groups. High levels in EAA especially lysine (Lys), arginine(Arg) and valine (Val) was in new production line (H2). It should take in consideration importance of H2 as one of valuable common carp whichwas introduced to Iraq in 2009, and is characterized by its high nutritional value due to its contents of USFA and EAA compared to oldproduction line H1.

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Abstract: The present study dealt with the determination of the protein, fat, moisture and ash chemical content fortwo species of bony fish (Teleosts) that belonged to two different families, namely Acanthopagrus latus (Sparidea) andCoptodon zilli ( Cichlidae). Also, the total energy (calories) to the protein and fat contents in the muscles of the two studiedfish and for two regions for each species. Samples were collected from the Al-Hindiya river in Karbala Province betweenAugust and October 2020. The current results noted an apparent difference in the mean values of chemical contents for thestudied length groups, which ranged between 100-400 mm, and for two regions of the body, as the rates of protein contentin A. latus were 17.42-18.60% while their rates ranged in C. zilli between 17.20-18.54%. The rates of fat content in A. latuswere 6.40-7.50%, whereas ranged between 5.70-6.30% in C. zilli and the rates of moisture content ranged from 74.60 to70.16%, while In C. zilli fish, the rates ranged between 75.40-72.40%, and the ash content ranged from 1.42 to1.80% and1.14-1.34% in A. latus and C. zilli fish respectively. Both fish were considered medium-fat content fish depending on itsvalue in their muscles

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Abstract The current study included conducting a comparative study on two types of bony fish Osteichthyes with similar aquatic environment and different food habits, namely: Arabibarbus grypus (Heckel, 1843), which belongs to the family Cyprinidae, and the fish Acanthopagrus arabicus (Iwatsuki, 2003), which belongs to the family Perciformes; Its purpose is to conduct a comparative study between them on some aspects related to determining locomotor activity as well as determining its nutritional value by estimating the chemical content of fish muscles, which includes: protein content, fat content, moisture content, ash content, and caloric values in two different areas of the body: (R1 and R2), and (50) samples for each type of study fish were collected from Euphrates river (Shatt al-Hindiya) in Karbala governorate and for the period between (September 2021and November 2021) using gill nets and hand-throwing nets with the help of fishermen in the area.

ملخص البحث :

Abstract Included a study to find out the chemical composition of Arabibarbus grypus (Heckel,1843) belonging to the Cyprinidae family, which includes: protein content, fat content, moisture content, ash content, and calorie values. In two different areas of the body: R1 and R2, 50 samples of study fish were collected from the Indian Shatt in Karbala province and between (September 2021 and November 2021) using gill nets And the hand-throwing nets and with the help of the area's fishermen.The results of the current study showed a difference in the values of chemical component rates in the muscles of the study fish, as the overall rates of protein content values in of Arabibarbus grypus ranged from (16.72 - 17.52) %, while the overall rates of values of the fat content of Arabibarbus grypus ranged from (5.95- 8.24)%, and the overall rates of moisture content values in Arabibarbus grypus ranged from (70.34- 67.01) %, while the overall rates of ash content ratios in Arabibarbus grypus ranged from (6.22-6.70) %. Proven results.2

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Abstract: The study aimed to investigate the chemical content (protein, lipid, moisture, andash) and estimate the total calories of lateral muscles in two cyprinids of Arabibarbus grypusand Leuciscus vorax. Species collected from Al-Hindiya River from July to September2020. Protein content values in A. grypus ranged from 17.53 to 19.83%, while in L. vorax,it ranged from 16.85 to 18.61%. The lipid content values were 4.846.26 and 4.63–6.26% inA. grypus and L. vorax, respectively. Arabibarbus grypus had a moisture content of 76.21-71.65% and L. vorax 73.24-75.43%. The ash contents of A. grypus ranged from 0.84 to1.25%, while that of L. vorax ranged from 1.4 to 2.09%. Both species can be classified asmedium lipid-content fish based on their lipid content values.