Main Subjects : Fish Pond's Management

Effect of adding blue-green algae, probiotic and antibiotic to the diet on the productive performance of common carp Cyprinus carpio L.

Mahmoud A. Mohammad; Nidhal T. Al-Taee; Shahbaa K. Al-Taee; Zahraa M. Al-Jumaa

Iraqi Journal of Veterinary Sciences, 2022, Volume 36, Issue Supplement I, Pages 11-17
DOI: 10.33899/ijvs.2022.134963.2425

This current study aimed to study the effect of adding blue-green algae (Spirulina), symbiotic (poultry star®me) at a ratio of 1 to 2% and colistin antibiotic to the control diet of common carp fish reared in glass aquariums for 56 days terms of three replicates for each treatment. The growth results showed that the fish fed on the third diet was significantly superior to the fish fed on the other experimental diets in the rate of total and daily weight gain, feed conversion ratio, feeding efficiency ratio and protein efficiency ratio criteria over all other experimental diets except for the second diet, 1% spirulina. The fish fed on the second diet significantly outperformed in the precipitated protein criterion and the protein productive value of all the experimental diets under study. The value of crude protein in the edible portion increased significantly when fish were fed on spirulina, symbiotic and antibiotic diets, compared to the control diet, while the percentage of fats in the fish fed on diets containing the food additives under test decreased significantly compared to the control diet. No significant differences were recorded in the percentage of ash. It is evident from what was mentioned above that the best results of the studied criteria were when adding spirulina at had positive effects on growth criteria and food utilization.

Effect of adding Eruca sativa in common carp on growth criteria, feed utilization and chemical composition

Saud D. Al-Rawe; Mahmoud A. Mohammad; Abd Al-Bar A. Al-Farha

Iraqi Journal of Veterinary Sciences, 2022, Volume 36, Issue Supplement I, Pages 107-113
DOI: 10.33899/ijvs.2022.135758.2514

To examine the effects of adding seeds powder and rocket Eruca sativa leaves to the diets of common carp Cyprinus carpio L. fish with percentages of 1, 2, and 3% of the total diet (the first, second, and third treatments), as well as the addition of rocket leaf powder to the fourth, fifth, and sixth diets, respectively, While the control diet, was empty of these additions (the seventh diet). Each treatment was replicated three times. These diets were used to feed common carp for 56 days. According to the statistical analysis's research results, the fish fed the fourth diet significantly superior surpassed the control diet and all other experimental diets in terms of growth criteria represented by the final weight, total weight gain, daily growth rate, relative, specific growth rate, and in terms of feed utilization: feed conversion ratio, feeding efficiency ratio and protein efficiency ratio. Except for the sixth treatment, the fed fish outperformed all other experimental treatments, and the second and fourth treatments regarding retained protein and protein production value. Fish were fed as the fifth treatment, significantly superior to the control diet. These results in the highest percentage of dry matter and crude protein for the edible portion of the body. Feeding fish on the fourth treatment resulted in the lowest proportion of ether extract, much lower than all the experimental diets. 

Morphohistopathological alteration in the gills and central nervous system in Cyprinus carpio exposed to lethal concentration of copper sulfate

Adeeb F. Saied; Shahbaa K. Al-Taee; Nidhal T. Al-Taee

Iraqi Journal of Veterinary Sciences, 2022, Volume 36, Issue 4, Pages 981-989
DOI: 10.33899/ijvs.2022.132781.2131

Copper Sulfate (CuSO4) is the most used in aquaculture as chemotherapeutic bath against bacterial, fungal and parasitic diseases but it is very toxic for fish so the goal of this study was to determine the lethal concentration of CuSO4 and evaluate it is toxicity in the gill and central nervous system (brain and spinal cord) in Cyprinus carpio. Fish exposed to 0, 2.5, 5 and 10 mg/L for 24 hours, each concentration with three replication each have six fish. The mortality rate was 100% at concentration 10 mg/L, which represented lethal concentration, while medium lethal concentration (LC50) was determined by Trevan method and it is 5mg/L. The fish with LC100 concentration exhibit abnormal respiration with gasping swimming, nervous sings with up down and stay at basin then die at 2-3 hours. The histopathological examination of the gills revealed circulatory disturbances, cellularity reaction, progressive and regressive alteration, this microscopic alteration was evaluated as semi-quantities analysis and there was variable significant (P≤0.05) in the pathological alteration and gill indexes between two treatments. In the brain and spinal cord, the lesions are represented by vasogenic edema, infiltration of inflammatory cells with atrophy in the neuronal body cells and hemorrhage. It is concluded from this study that the use of copper sulfate is within limited concentrations because increasing its concentration leads to fish toxicity, and it was observed that the gill tissue is more sensitive to toxicity than the central nervous system

The effect of stocking density and the application of Nitrobacter as ammonia decomposer in aquaponics system of Clarias gariepinus with water spinach (Ipomoea aquatica)

Adinda Septyasari Taragusti; Prayogo Prayogo; Boedi Setya Rahardja

Iraqi Journal of Veterinary Sciences, 2021, Volume 35, Issue 2, Pages 217-222
DOI: 10.33899/ijvs.2019.126116.1243

This study aimed to determine the effect of Nitrobacter bacteria on specific growth rate (SGR), survival rate (SR), and feed convertion ratio (FCR) of African catfish (Clarias gariepinus) in aquaponics systems. The sample used was African catfish with a size of 5-7 cm as many as 720 individuals. The research method used was experimental design in the form of Completely Randomized Design (CRD). This study used 5 types of treatments with 4 repetitions. The P0 and P1 contain of 30 fish in each aquarium; 35 fish in P2; 40 fish in P3; and 45 fish in P4. The control group (P0) were treated without Nitrobacter administration and the other 4 intervention groups were given Nitrobacter 1 ml with a density of 1x108 CFU ml-1. The main parameters studied were SGR, SR and FCR of African catfish in different aquarium with different stocking densities. This research also studied the growth of water spinach (Ipomoea aquatica) also water quality conditions in aquaponics systems. The administration of Nitrobacter in aquaponics systems gave a significant effect on the SGR, SR, and FCR of catfish. The administration of Nitrobacter in an aquaponics system can give maximum effect if there are 45 fish stocking densities and 1 ml Nitrobacter with a concentration of 1x108 CFU ml-1.

The role of clove (Sygnium aromaticum) oil as anaesthetics compound for abalone (Haliotis squamata)

Norma Fanni; Fuquh Shaleh; Muhammad Santanumurti

Iraqi Journal of Veterinary Sciences, 2021, Volume 35, Issue 2, Pages 335-342
DOI: 10.33899/ijvs.2020.126824.1396

Abalone is one of aquaculture commodity that has a high value including in Indonesia due to its price, taste and nutrition content. Unfortunately there is problem in abalone’s transportation process which caused stress and even death. Clove oil can be used as anesthetic agent for abalone to obtain a high survival rate because of its eugenol content. This research tried to evaluate the the effect of clove oil as anesthesia agent to determined induction time, survival rate and oxygen cosumption in H squamata. This study used an experimental method and used a completely randomized design with treatment concentration of clove oil solution were 0.5 ml/L (A), 0.7 ml/L (B), 0.9 ml/L (C), and 1.1 ml/L (D) which each treatment was repeated three times, and calculated the value of the abalone (H. Squamata) survival rate after maintenance for 14 days. The results of the study showed that the survival rate of abalone seeds obtained in the treatment with the concentration of 1.1 ml/L (D). In the treatment also showed the fastest induction time with 96.67 seconds. The lowest oxygen comsumption rate in this study was treatment D with concentration of 1,1 ml/L. It could be concluded that using clove oil with concentration of 1.1 ml/L as anasthesic compound for abalone showed effectiveness in induction time, survival rate, and oxygen consumption rate.

Effect of microalgae Spirulina spp. as food additive on some biological and blood parameters of common carp Cyprinus carpio L.

Nasreen Muhialddin Abdulrahman; Hawkar Jaafar Hama Ameen; Shamal Rasul Hama; Bakhan Rafiq Hassan; Pola Jalal Nader

Iraqi Journal of Veterinary Sciences, 2019, Volume 33, Issue 1, Pages 27-31
DOI: 10.33899/ijvs.2019.125527.1049

This study was carried out to study the effect of adding different levels of the microalgae Spirulina spp. in fish laboratory of Animal Sciences Department, College of Agricultural Sciences of Sulaimani University, Sulaimani, Iraq. A total of 72 common carp fingerling weight 45±2 gm used to detect the effect of three different levels of the algae Spirulina spp. The control treatment T1 with 0%., T2 with 3 gm /kg diet and T3 with 5 gm Spirulina /kg diet. Each treatment in three replicates in which six fingerlings common carp were stocked in each aquarium. Results indicated no significant differences at PSpirulina) in T3 was higher significantly at PSpirulina was higher significantly at PSpirulina to common carp diets in different levels leads to significant differences in differential WBC counts, T3 with 5 gm Spirulina /kg diet was higher in WBC counts. Lymphocytes were higher in each of control and T3. Monocytes were higher in control, granulocytes in T2 with 3 gm Spirulina /kg diet. Adding of Spirulina affected significantly in cholesterol as compared to the control. Triglyceride was higher in control and T2. T3 with 5 gm Spirulina /kg diet leads to higher and lower significantly in HDL and LDL respectively. T1 and T3 were higher significantly in spleenosomatic index. Inclusion of S. platensis in fish diet as a feed additive or as a partial replacer of the expensive fishmeal imposes significant promotions in fish growth, coloration, reproduction and flesh quality.