Effect of partial replacement of dietary fish meal by soybean meal with betaine attractant supplementation on growth performance and fatty acid profiles of juvenile rainbow trout (O ncorhynchus mykiss )

2020 ◽  
Vol 51 (4) ◽  
pp. 1533-1541 ◽  
Author(s):  
Nihat Yeşilayer ◽  
Ismail Eralp Kaymak
Keyword(s):  
Fatty Acid ◽  
Rainbow Trout ◽  
Growth Performance ◽  
Soybean Meal ◽  
Fish Meal ◽  
Partial Replacement ◽  
Fatty Acid Profiles ◽  
Juvenile Rainbow Trout ◽  
Dietary Fish

Partial Replacement of Herring Meal with Soybean Meal and Other Changes in a Diet for Rainbow Trout (Salmo gairdneri)

1974 ◽  
Vol 31 (9) ◽  
pp. 1523-1528 ◽  
Author(s):  
C. Y. Cho ◽  
H. S. Bayley ◽  
S. J. Slinger
Keyword(s):  
Rainbow Trout ◽  
Soybean Meal ◽  
Feed Efficiency ◽  
Fish Meal ◽  
Partial Replacement ◽  
Salmo Gairdneri ◽  
Marine Oil ◽  
Brewers Yeast ◽  
Open Formula ◽  
By Products

Growth rate, feed efficiency, and mortality were not adversely affected by reducing the level of herring meal in an open formula dry-pellet diet fed to rainbow trout (Salmo gairdneri) in aquaria through which 80–90% of the effluent water was recirculated. The herring meal was reduced from 35 to 18%, and the level of soybean meal increased from 10 to 39%. The fish gained 5.5 and 5.4 kg/100 fish from 8 to 40 wk of age on the high and low herring meal diets, respectively. Deletion of brewers' yeast, corn fermentation extractives, and whey powder from the diet with the higher level of herring meal increased weight gain to 7.0 kg/100 fish. When the fermentation by-products were removed from the diet with the lower level of fish meal the gain was reduced to 4.8 kg/100 fish. All the diets contained 4% of soybean or rapeseed oil or a marine oil; the type of oil did not influence the gains, but the conversion of feed to gain was most efficient for the diet containing the marine oil. The apparent digestibilities of the proximate components of three of the diets suggested that the fermentation by-products were not as digestible to the fish as the other components of the diet.

scholarly journals Transcriptomic Assessment of Dietary Fish Meal Partial Replacement By Soybean Meal and Prebiotic Inclusion In The Liver of Juvenile Pacific Yellowtail (Seriola Lalandi)

2021 ◽  
Author(s):  
Oscar E. Juárez ◽  
Rigoberto Delgado-Vega ◽  
Fabiola Lafarga De La Cruz ◽  
Juan Pablo Lazo ◽  
Edgar López-Landavery ◽  
...  
Keyword(s):  
Soybean Meal ◽  
Fish Meal ◽  
Control Diet ◽  
Differential Expression Analysis ◽  
Partial Replacement ◽  
Important Species ◽  
Formulated Diets ◽  
Dietary Fish ◽  
Seriola Lalandi ◽  
Adaptation To Captivity

Abstract Seriola lalandi is an important species for aquaculture, due to its rapid growth, adaptation to captivity and formulated diets, and high commercial value. Due to the rise in fish meal (FM) price, efforts are made to replace it partially or entirely with vegetable meals in diets for carnivorous fish. The use of prebiotics when feeding vegetable meals has improved fish health. In this study, four experimental diets were assessed in juveniles, the control diet consisted of FM as the main protein source, the second diet included 2% GroBiotic®-A (FM-P), the third included FM with 25% replacement by soybean meal (SM25), and the fourth consisted in SM25 with 2% of GroBiotic®-A (SM25-P). RNA-seq of the liver tissue was performed, followed by differential expression analysis and functional annotation to identify genes affected by the diets. Growth was not affected by this level of FM replacement, but it was improved by the prebiotic. Annotation was achieved for 78,826 transcripts, of which 135 were up-regulated and 78 down-regulated among all treatments compared to the control. Transcriptomic profiles of control samples were clustered with those from fishes fed SM25 and SM25-P diets, and the most differentiated group was that one fed the FM-P diet. SM25-P showed the least amount of differentially expressed genes, maintaining general transcriptomic profiles of control diet in the liver, therefore this diet is a potential economic alternative to the FM diet, for S. lalandi juveniles. Assessment of the effects of this diet along the digestive tract is recommended.

scholarly journals Preliminary Evaluation of Rainbow Trout Diets Containing PepSoyGen, a Fermented Soybean Meal Product, and Additional Amino Acids

2013 ◽  
Vol 6 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Michael E. Barnes ◽  
Michael L. Brown ◽  
Kurt A. Rosentrater ◽  
Jason R. Sewell
Keyword(s):  
Amino Acids ◽  
Rainbow Trout ◽  
Soybean Meal ◽  
Fish Meal ◽  
Feed Conversion ◽  
Fermented Soybean Meal ◽  
Fermented Soybean ◽  
Juvenile Rainbow Trout ◽  
Significant Difference ◽  
Meal Product

Juvenile rainbow trout Oncorhynchus mykiss diets containing PepSoyGen, a commercially-available fermented soybean meal product, were supplemented with methionine and other amino acids. A fish meal-based control and four experimental diets were used in a 36-day feeding trial; two diets contained 40% PepSoyGen and 10% fish meal, and two diets contained 50% PepSoyGen and no fish meal. Each of these diets was supplemented with either methionine, or methionine and additional amino acids. One mortality was observed during the trial. Overall weight gain, percent gain, and feed conversion ratio were significantly greater for the fish meal control than for any of the PepSoyGen diets, although feed conversion ratios from all of the diets were still below 1. Apparent protein digestibility was significantly less in the fish receiving the control diet compared to any of the experimental diets, and significantly increased with increasing Pep- SoyGen concentrations. There was no significant difference in length, weight, condition factor, hepatosomatic index, viscerosomatic index, or any fish health responses among dietary treatments. Fillet composition, as determined by crude protein, crude lipid, water, and ash, was also not significantly different among fish reared on any of the diets. The supplementation of other amino acids in addition to methionine had no noticeable effect. The results from this study indicate that PepSoyGen with amino acid supplementation can completely replace fish meal in juvenile rainbow trout grower diets over a relatively short time-frame, albeit with some decrease in rearing performance.

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