Showing 6 results for Fish Meal
, , , 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.
, Alireza Alishahi, Bahareh Shabanpour,
Volume 4, Issue 2 (9-2015)
Abstract
The aim of this study, in the first step, was to recover the protein content in wastewater of fish meal factories using chitosan, chitosan nanoparticles and chitosan-aluminum sulphate composition. In the second step, the extracted protein was assessed for its essential amino acids profile. Also, the reduced amount of proteins in the waste water was evaluated by measuring different parameters such as turbidity, pH, COD. Finally, chitosan nanoparticles characteristics were investigated using atomic force microscopy. Results showed that turbidity, COD and soluble protein significantly decreased upon adding different concentrations of chitosan, nanoparticle of chitosan and chitosan-alum (p<0.05). The maximum protein recovery was related to chitosan-alum composition and chitosan nanoparticles with no significant difference between these two treatments. Evaluation of recovered protein in term of amino acids profiles showed that there were essential amino acids such as histidine, lysine, methionine and phenylalanine in protein of fish meal wastewater.
F. Movahedrad , A. Hajimoradloo , A. Zamani, H. Kolangi ,
Volume 7, Issue 3 (9-2018)
Abstract
Aims: In this study, the replacement effect of dietary fish meal with AquPro (Processed soybean meal) was assessed on growth performance, body composition and total protease activity of rainbow trout (Oncorhynchus mykiss) over a period of 6 weeks.
Materials and Methods: In this experimental study, at the beginning of the trial, 5 experimental diets were formulated with fish meal as control (A) and diets with 25% (B), 50% (C), 75% (D) and 100% (E) AquPro, respectively. At the end of the feeding trial, growth performance, body composition and total protease activity from pyloric caeca and intestine were measured.
Findings: The results indicated that the WG, SGR and ADG in experimental diet C were the highest and showed a significant difference with other treatments (p<0.05). However, the status index in experimental diet C was lower than other treatments, but did not show significant differences (p>0.05). The moisture content, fat, and body ash were respectively, significantly higher in experimental diets A, B and E than those of other treatments (p<0.05), But the highest amount of protein was observed in the experimental diet of C, which did not show any significant difference with other treatments (p>0.05). The highest total protease activity from pyloric caeca and the intestine was observed in the fish fed with diet C which showed a significant difference with other diets (p<0.05).
Conclusion: Based on the results of growth performance, body composition, and total protease activity was revealed that the diet containing 50% AquPro could be appropriate for rainbow trout growth.
Abbas Zamani, Mohammad Goli,
Volume 10, Issue 4 (12-2021)
Abstract
The present study was conducted to evaluate the effect of fish meal replacement with yellow meal worm (Tenebrio molitor) (TM) on growth performance and proteolytic enzymes activity of trypsin and alkaline protease in koi (Cyprinus rubrofuscus) juvenile (weight: 0.95 ± 0.15 g) for 8 weeks. Five experimental diets were prepared with replacement levels of 0 (control), with 25% (D1), 50% (D2), 75% (D3) and 100% (D4) of fish meal with TM as isonitrogenous and isoenergetic in triplicate. Parameters of body weight gain, specific growth rate and condition factor in control, D1 and D2 diets were not shown a significant difference, while these indices had a decreased amount in D3 and D4 diets significantly (p < 0.05). The highest amount of feed conversion ratio was indicated in control and D1 diets with a significant difference than those from other treatments (p < 0.05). The survival rate was 100 % in the diets. The lipid efficiency ratio and the protein efficiency ratio in diets control, D1 and D2 were significantly the higher than other treatments (p < 0.05). The highest activity of trypsin and alkaline protease enzymes from intestine was observed in control, D1 and D2 groups which showed a significant difference compared to D3 and D4 groups (p < 0.05). The findings of growth performance and protease enzymes activity were revealed that the diets containing up to 50% TM could be appropriate for koi growth.
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.
