The effect of plant-based diet and suboptimal environmental conditions on digestive function and diet-induced enteropathy in rainbow trout (Oncorhynchus mykiss)

P. Mosberian-Tanha, J.W. Schrama, T. Landsverk, L.T. Mydland, M. Øverland*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

This experiment investigated intestinal enteropathy and digestive function of rainbow trout challenged with soybean meal-based diet (SBM) at optimal or suboptimal environments created by normal or reduced water flow, respectively. Oxygen level remained above 7 mg L-1 for optimal environment and between 4 and 5 mg L-1 for suboptimal environment. Triplicate groups of fish (mean body weight 74 g) were fed fishmeal-based diet (FM) or SBM at optimal environment in period 1 (28 days). In period 2 (42 days), fish were subjected to a change from FM to SBM or remained on the same diet as used in period 1. The fish were also exposed to change from optimal to suboptimal environment or remained under optimal conditions. The fish subjected to change from FM to SBM, regardless of their environment, showed similar degree of enteropathy from day 14. Lipid and starch digestibility was lower in SBM-fed fish at suboptimal environment compared to fish fed the same diet at optimal environment. Crude protein digestibility, however, was highest in SBM-fed fish at suboptimal environment throughout period 2. In conclusion, in SBM-fed rainbow trout, exposure to suboptimal environment did not change the degree of enteropathy; however, lipid and starch digestibility were further reduced.
Original languageEnglish
Pages (from-to)112-122
JournalAquaculture Nutrition
Volume24
Issue number1
Early online date21 Feb 2017
DOIs
Publication statusPublished - Feb 2018

Fingerprint

plant-based diet
digestive system diseases
rainbow
Oncorhynchus mykiss
environmental conditions
diet
soybean meal
soybean
environmental factors
fish
digestibility
fish feeds
starch
lipid
effect
lipids
digestible protein
fish meal
water flow
crude protein

Keywords

  • Apparent digestibility coefficients
  • Digestive function
  • Enteritis
  • Hypoxia
  • Rainbow trout
  • Soybean meal

Cite this

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title = "The effect of plant-based diet and suboptimal environmental conditions on digestive function and diet-induced enteropathy in rainbow trout (Oncorhynchus mykiss)",
abstract = "This experiment investigated intestinal enteropathy and digestive function of rainbow trout challenged with soybean meal-based diet (SBM) at optimal or suboptimal environments created by normal or reduced water flow, respectively. Oxygen level remained above 7 mg L-1 for optimal environment and between 4 and 5 mg L-1 for suboptimal environment. Triplicate groups of fish (mean body weight 74 g) were fed fishmeal-based diet (FM) or SBM at optimal environment in period 1 (28 days). In period 2 (42 days), fish were subjected to a change from FM to SBM or remained on the same diet as used in period 1. The fish were also exposed to change from optimal to suboptimal environment or remained under optimal conditions. The fish subjected to change from FM to SBM, regardless of their environment, showed similar degree of enteropathy from day 14. Lipid and starch digestibility was lower in SBM-fed fish at suboptimal environment compared to fish fed the same diet at optimal environment. Crude protein digestibility, however, was highest in SBM-fed fish at suboptimal environment throughout period 2. In conclusion, in SBM-fed rainbow trout, exposure to suboptimal environment did not change the degree of enteropathy; however, lipid and starch digestibility were further reduced.",
keywords = "Apparent digestibility coefficients, Digestive function, Enteritis, Hypoxia, Rainbow trout, Soybean meal",
author = "P. Mosberian-Tanha and J.W. Schrama and T. Landsverk and L.T. Mydland and M. {\O}verland",
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The effect of plant-based diet and suboptimal environmental conditions on digestive function and diet-induced enteropathy in rainbow trout (Oncorhynchus mykiss). / Mosberian-Tanha, P.; Schrama, J.W.; Landsverk, T.; Mydland, L.T.; Øverland, M.

In: Aquaculture Nutrition, Vol. 24, No. 1, 02.2018, p. 112-122.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Mydland, L.T.

AU - Øverland, M.

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N2 - This experiment investigated intestinal enteropathy and digestive function of rainbow trout challenged with soybean meal-based diet (SBM) at optimal or suboptimal environments created by normal or reduced water flow, respectively. Oxygen level remained above 7 mg L-1 for optimal environment and between 4 and 5 mg L-1 for suboptimal environment. Triplicate groups of fish (mean body weight 74 g) were fed fishmeal-based diet (FM) or SBM at optimal environment in period 1 (28 days). In period 2 (42 days), fish were subjected to a change from FM to SBM or remained on the same diet as used in period 1. The fish were also exposed to change from optimal to suboptimal environment or remained under optimal conditions. The fish subjected to change from FM to SBM, regardless of their environment, showed similar degree of enteropathy from day 14. Lipid and starch digestibility was lower in SBM-fed fish at suboptimal environment compared to fish fed the same diet at optimal environment. Crude protein digestibility, however, was highest in SBM-fed fish at suboptimal environment throughout period 2. In conclusion, in SBM-fed rainbow trout, exposure to suboptimal environment did not change the degree of enteropathy; however, lipid and starch digestibility were further reduced.

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