Fish consumption is very important for a healthy and balanced diet. It is recommended to consume fish for the development of the brain and immune system from a young age. In order to avoid or overcome diseases such as heart, atherosclerosis and cholesterol in later ages, the importance of fish consumption should be increased. In this context, it is necessary to take measures to determine fish consumption habits and accordingly. For these reasons, this study was carried out to determine fish consumption and habits of people living in Demirköy and Babaeski districts of Kırklareli province. Within the scope of quantitative research origin, survey method was used. A questionnaire was used to determine fish consumption and habits as a data collection tool. After the applications with a total of 250 people, the data were analyzed with the SPSS 25 program. Analysis data were evaluated by tabulating frequency and percentage. In addition, the relationship between the monthly income of the participants from both districts and the frequency of fish consumed in a month was determined by chi-square analysis. It was determined that there were similarities in the fish preferences of the people participating in the study from Demirköy and Babaeski. In determining fish consumption preferences and habits, monthly income level, number of people in the family, hunting season, and freshness of the fish were also evaluated. It was concluded that the places to buy fish were different in both districts, and there was a relationship between monthly income and the amount of fish consumed in a month. It is thought that fish consumption can be increased with the opening of markets where people can buy fresh fish in all seasons, and the fish prices should be determined by associating them with monthly income.
This study was performed to determine the optimum level of soybean meal diets for two banded sea bream for growth performance, nutrient utilization, body composition and serum biochemistry. Two banded seabream were fed five experimental diets which were formulated replace fish meal by soybean meal at 0, 20, 30, 40 and 50%. Up to 40% of dietary fish meal was successfully replaced with no growth depression. Whole body composition of two banded seabream was not affected by soybean meal inclusion level. Total protein, triglyceride and total cholesterol of fish fed the SM50 diets were significantly lower compared to fish fed the soybean free diet. On the other hand, serum glucose level significantly increased as dietary soybean meal inclusion increased. Results showed that 40% fish meal can be replaced in diets for the two banded seabream by defatted soybean meal. Further studies to determine the inclusion level of soybean meal more than 40% with amino acid or enzyme supplementation are needed.
An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue streak hap for 8 weeks. Fish (initial weight, 0.85 g) were reared in twelve 50 L aquarium with biological filter and controlled temperature (27.5°C), in stocking density of ten fish/aquarium. Results showed that dietary protein level significantly influenced final weight, weight gain and specific growth rate of fish. Maximum growth of fish was observed in the 40% protein diet, although this was not significantly different from the 35% and 45% protein diets (P>0.05). Specific growth rate and feed efficiency increased from 30% to 40% protein, and thereafter decreased for diet 45% protein. There were statistically significantly differences in feed intake among treatments (P<0.05). Fish fed with the highest protein diet had lower percentage daily feed consumption values than those of fish fed with the lowest protein diet. Under the experimental conditions applied, juvenile blue streak hap, L. Caeruleus, appear to require more than 35% dietary protein for optimized growth.
Abstract A feeding study with Two‐banded Seabream Diplodus vulgaris was conducted to determine the effects of replacement of fish oil (FO) by unrefined peanut oil (PO) on growth performance, feed utilization, body composition, fatty acid composition, and serum biochemical and hematological variables. Three isonitrogenous (35.8%) and isoenergetic (21.15 kJ/g) diets were formulated by replacing dietary FO with PO at levels of level 0% (PO 0 ), 50% (PO 50 ), or 100% (PO 100 ). Fish were fed twice a day until satiation for an experimental period of 8 weeks. The best growth performance was observed in fish fed with the PO 0 and PO 50 diets. A significant increase was observed in hematocrit and mean corpuscular volume levels of fish fed with PO 50 diet compared with the other groups. Hemoglobin, mean corpuscular hemoglobin, total protein, albumin, and globulin were not affected by dietary PO treatment and did not differ among experimental groups. The glucose level was highest in the PO 100 group. Triglyceride and cholesterol levels were lower in fish fed diets with PO inclusions than in those fed the control diet. The fatty acid composition of fish was significantly affected by the experimental diets. Glutamic oxaloacetic transaminase, glutamic pyruvictransaminase, lactate dehydrogenase, and alkaline phosphatase were not affected by dietary PO treatment. The n‐3:n‐6 ratio in fish fed the PO 0 diet was also higher than in fish fed the PO‐supplemented diets. The results of the present study showed that FO could be substituted by PO up to 50% in Two‐banded Seabream diets without any negative effect on growth performance or serum biochemical and hematological features.
