Assessment of lupin flour as a diet ingredient for rainbow trout (Salmo gairdneri)
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Abstract
Studies were conducted to determine the value of lupin flour as a replacement for full-fat soybean meal (FFSM) in the diet of rainbow trout (Salmo gairdneri). Energy and digestibility values for lupin were determined using a metabolism chamber and it was found that trout utilize lupin well. The gross energy, metabolizable energy, and the percent digestibilities of protein and energy for lupin were found to be 4757 kcal/kg, 2797 kcal/kg, 85.2%, and 66.1%, respectively. When plant protein (either FFSM or lupin flour) was used as a supplemental dietary protein source to fish meal, or when the plant protein was the primary dietary protein source, fish fed diets where lupin completely replaced FFSM gained 99–106% of the weight of those fed the FFSM and had statistically equal feed efficiency ratios ranging from 80 to 83%. Although some minor dietary alterations may be needed (e.g., lowering the fat content of the diet) to maintain the economic advantage of lupin over soybean meal, lupin appears to be a useful source of protein for trout and may represent another economical plant protein alternative to fish meal.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Assessment of lupin flour as a diet ingredient for rainbow trout (Salmo gairdneri) |
| Series title | Aquaculture |
| DOI | 10.1016/0044-8486(88)90207-4 |
| Volume | 71 |
| Year Published | 1988 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Leetown Science Center |
| Description | 7 p. |
| First page | 379 |
| Last page | 385 |
| Google Analytic Metrics | Metrics page |