scholarly journals Digesta and Plasma Metabolomics of Rainbow Trout Strains with Varied Tolerance of Plant-Based Diets Highlights Potential for Non-Lethal Assessments of Enteritis Development

Metabolites ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 590
Author(s):  
Mariana Palma ◽  
Jacob W. Bledsoe ◽  
Ludgero C. Tavares ◽  
Nicholas Romano ◽  
Brian C. Small ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Fish Growth ◽  
Valuable Insight ◽  
Intestinal Histology ◽  
Protein Sources ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Alternative Protein ◽  
Metabolite Profiles ◽  
Final Weight ◽  
Better Than

The replacement of fishmeal in aquafeeds is essential to the sustainability of aquaculture. Besides the procurement of alternative protein sources, fish can also be selected for better performance on plant-based alternative diets. Rainbow trout (Oncorhynchus mykiss) is one such species in which the strain ARS-Sel has been selected for higher growth and enhanced utilization when fed soy-based diets. The aim of this study was to compare fish growth and plasma and digesta metabolomes between ARS-Sel and two commercial strains (CS-1 and CS-2), when fed plant-protein (PM) and fishmeal-based (FM) diets, and to correlate them with the onset of enteritis. An NMR-metabolomics approach was taken to assess plasma and digesta metabolite profiles. Diet and strain showed significant effects on fish growth, with the ARS-Sel fish receiving the PM diet reaching the highest final weight at sampling. Multivariate analysis revealed differences between plasma and digesta metabolite profiles of ARS-Sel and CS (CS-1 considered together with CS-2) PM-fed groups in the early stages of enteritis development, which was confirmed by intestinal histology. As reported in previous studies, the ARS-Sel strain performed better than the commercial strains when fed the PM diet. Our findings also suggest that metabolomic profiles of plasma and digesta, samples of which can be obtained through non-lethal methods, offer valuable insight in monitoring the occurrence of enteritis in carnivorous aquaculture species due to plant-based diets.

scholarly journals Replacement of Fish Meal by Alternative Protein Sources in Rainbow Trout Diets.

1993 ◽  
Vol 59 (9) ◽  
pp. 1573-1579 ◽  
Author(s):  
Takeshi Watanabe ◽  
Juadee Pongmaneerat ◽  
Shuichi Sato ◽  
Toshio Takeuchi
Keyword(s):  
Rainbow Trout ◽  
Fish Meal ◽  
Protein Sources ◽  
Alternative Protein

Elemental signatures in otoliths of hatchery rainbow trout (Oncorhynchus mykiss): distinctiveness and utility for detecting origins and movement

2009 ◽  
Vol 66 (4) ◽  
pp. 513-524 ◽  
Author(s):  
Daniel K. Gibson-Reinemer ◽  
Brett M. Johnson ◽  
Patrick J. Martinez ◽  
Dana L. Winkelman ◽  
Alan E. Koenig ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Water Chemistry ◽  
Fisheries Management ◽  
Valuable Insight ◽  
Otolith Chemistry ◽  
Considerable Potential ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
The Relationship ◽  
Ambient Levels

Otolith chemistry in freshwater has considerable potential to reveal patterns of origin and movement, which would benefit traditional fisheries management and provide a valuable tool to curb the spread of invasive and illicitly stocked species. We evaluated the relationship between otolith and water chemistry for five markers (Ba/Ca, Mn/Ca, Sr/Ca, Zn/Ca, and 87Sr/86Sr) in rainbow trout ( Oncorhynchus mykiss ) using the existing hatchery system in Colorado and Wyoming, USA, to provide controlled, seminatural conditions. Otolith Ba/Ca, Sr/Ca, and 87Sr/86Sr reflected ambient levels, whereas Mn/Ca and Zn/Ca did not. Using only the markers correlated with water chemistry, we classified fish to their hatchery of origin with up to 96% accuracy when element and isotope data were used together. Large changes in 87Sr/86Sr were evident in otolith transects, although subtler changes in Sr/Ca were also detectable. Our results suggest the relatively few otolith markers that reflect ambient chemistry can discriminate among locations and track movements well enough to provide valuable insight in a variety of applied contexts.

Intestinal histology and stereology in rainbow trout (Oncorhynchus mykiss ) administrated with nanochitosan/zeolite and chitosan/zeolite composites

2018 ◽  
Vol 49 (5) ◽  
pp. 1803-1815 ◽  
Author(s):  
Gholamreza Hamidian ◽  
Khadijeh Zirak ◽  
Najmeh Sheikhzadeh ◽  
Ali Khani Oushani ◽  
Sadigheh Shabanzadeh ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Intestinal Histology ◽  
Rainbow Trout Oncorhynchus Mykiss

Combinational Use of Malt Protein Flour and Soybean Meal as Alternative Protein Sources of Fish Meal in Fingerling Rainbow Trout Diets

1995 ◽  
Vol 61 (5) ◽  
pp. 828-832 ◽  
Author(s):  
Toshio Akiyama ◽  
Tatsuya Unuma ◽  
Takeshi Yamamoto ◽  
Panayiota Marcouli ◽  
Sohtaroh Kishi
Keyword(s):  
Rainbow Trout ◽  
Soybean Meal ◽  
Fish Meal ◽  
Protein Sources ◽  
Alternative Protein ◽  
Protein Flour

Effects of chitosan coating and rosemary oil on rainbow trout(Oncorhynchus mykiss, W. 1792) filets

2016 ◽  
Author(s):  
Özlem Pein Cann ◽  
Halil Yalcin ◽  
Ali Arslan
Keyword(s):  
Rainbow Trout ◽  
Storage Time ◽  
Thiobarbituric Acid ◽  
Group Iv ◽  
Life Changes ◽  
Group Iii ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Group I ◽  
Rosemary Oil ◽  
Better Than

This study was performed to examine the effect of chitosan and rosemary oil on the shelf life changes of the rainbow trout filet. The samples divided into 4 groups. The control (I) group samples nothing were applied. The group II samples were applied solution of 2% chitosan. The group III samples were applied 2% chitosan and 0.05% rosemary oil and group IV samples only 0.05% rosemary oil. The samples of all groups storage at +4 °C for day 20. The microbiological (total mesophilemesophiles aerobe bacteria, H2S producing bacteria, Enterobacteria, Pseudomonas spp. and lactic acid bacteria), chemical (pH, total volatile base nitrogen and thiobarbituric acid) and sensory evaluation on days 0, 4, 8, 12, 16 and 20. Total mesophile aerobe bacteria count reached 7.2 log10 cfu/g at samples of group I on 8 day, while 4 log10 cfu/g samples of group III on 20 day. The result of chemical parameters, samples of group III were detected better than other groups samples during the storage time.

Feather meals and meat and bone meals from different origins as protein sources in rainbow trout (Oncorhynchus mykiss) diets

Aquaculture ◽  
2000 ◽  
Vol 181 (3-4) ◽  
pp. 281-291 ◽  
Author(s):  
D.P Bureau ◽  
A.M Harris ◽  
D.J Bevan ◽  
L.A Simmons ◽  
P.A Azevedo ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Protein Sources ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Different Origins
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