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Showing 3 results for Fish Meal Replacement
, , , Farid Firouzbakhsh, ,
Volume 3, Issue 4 (2-2015)
Abstract
The effect of replacement of dietary soybean meal with broad bean flour on rainbow trout (Oncorhynchus mykiss) with average weight of 12.5 ± 0.09 g in 4 levels (15, 30, 45 and 60%) during 7 weeks trial was examined. The results showed that substitution of soybean meal up to 30% replacement) did not have any negative impact on fish growth performance. However, significant difference in red blood cells count and hematocrit percent were found between the experimental groups and the control (P<0.05).The highest amount of red blood cells (2.03± 0.23) and hematocrit (44.3±1.52) were observed in group of 15% replacement. Also, the results of blood biochemical parameters showed that cholesterol, total protein, albumin and globulin levels in experimental groups did not significantly differ between the control and other groups. The highest level of glucose (139.04±22.2) and triglyceride (323.54±11.8) were observed in the control group, but no significantly different (P>0.05) from 15% replacement. This study showed that up to 30% fish meal replacement with broad bean flour in the diet of rainbow trout had no negative impact on the growth performance, blood factors and survival of fish.
Mojtaba Shirood Najafi, Abdolmohammad Abedian Kenari,
Volume 12, Issue 3 (9-2023)
Abstract
In this experiment fish meal was replaced with RPC by levels of 0, 25, 50, 75, and 100%. Diets fed to kutum (initial weight of 340±20 mg) three times daily for 60 days. The highest final weight (1020 mg) and weight gain (670 mg) and the lowest FCR (1.5) were observed in the 50% substitution treatment, which was significantly different from the other treatments (P < 0.05). The survival rate was 100% and the same for all diets. No significant difference was observed in carcass composition (moisture, protein, lipid and ash) between different treatments (P > 0.05). By increasing the amount of rice protein concentrate, the amount of n-3 decreased and the amount of n-6 increased (P<0.05). The ratio of n-3 to n-6 did not change significantly up to the level of 25%, but it showed a significant decrease with the increase of the substitution level. The amount of total amino acid did not change significantly among the treatments with the increase in the concentration level. The highest amount of essential amino acids was related to the 25% treatment, which was significantly different from the control, 50, 75 and 100% replacement treatments. In general, the results of this study showed that rice protein concentrate can be used as a substitute for fish meal up to 50% in the diet without significant change in the growth of Kutum fry. Of course, the quality of carcass fatty acids was not maintained at this level, and the 25% level was more suitable.
Faezeh Mortezaei, Bahram Falahatkar, Mir Masoud Sajjadi, Roghieh Safari,
Volume 12, Issue 4 (12-2023)
Abstract
The objective of this study was to evaluate the performance of nutritional programming on growth and hematological indices of sterlet sturgeon (Acipenser ruthenus) during the larval stage by partial replacement of fish meal (FM) with soybean meal (S). Sterlet sturgeon with initial mean weight of 0.32 ± 0.01 g were randomly distributed into twelve circular concrete tanks (260 fish per each tank) and fed four experimental diets with substitution levels of 0 (control/FM), 15% (S15), 30% (S30) and 45% (S45) of fish meal with soybean meal during three phases in three replicates. In phase 1 (programming), fish were fed four different diets for 28 days. All the groups were then fed with FM during phases 2 (intermediate) and S45 at phase 3 (challenge) for 28 days. At the end of each phase, growth indices were measured. Hematological indices including red blood cell, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration were assessed at the end of the challenge phase. The growth performance was not significantly different in either phases 1 or 2 (P > 0.05); however, final weight, weight gain, specific growth rate, and average daily growth were significantly higher in S45 than FM during phase 3 (P < 0.05). Moreover, no significant difference was indicated among the groups in hematological indices (P > 0.05). According to the obtained results, early nutritional programming could effectively enhance the adaptation of sterlet sturgeon to plant-based protein later in life.
