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The use of a soy product in juvenile yellowtail kingfish (Seriola lalandi) feeds at different water temperatures: 2. Soy protein concentrate
Citation
Bowyer, JN and Qin, JG and Smullen, RP and Adams, LR and Thomson, MJS and Stone, DAJ, The use of a soy product in juvenile yellowtail kingfish (Seriola lalandi) feeds at different water temperatures: 2. Soy protein concentrate, Aquaculture: An International Journal Devoted to Fundamental Aquatic Food Resources, 410-411, (October 2013) pp. 1-10. ISSN 0044-8486 (2013) [Refereed Article]
Copyright Statement
Copyright 2013 Elsevier B.V
DOI: doi:10.1016/j.aquaculture.2013.06.001
Abstract
Juvenile yellowtail kingfish (Seriola lalandi) were fed four iso-nitrogenous and iso-calorific (digestible
basis) experimental diets containing 0, 20, 30 or 40% soy protein concentrate (SPC) for 34 days at optimal
(22 °C) and suboptimal water temperatures (18 °C) to measure the responses of growth, feed efficiency,
nutrient digestibility, gut histology and digestive enzyme activity to dietary manipulation. The substitution
of fish meal with 20% SPC did not significantly affect the growth of fish. However, second-order polynomial
regression analyses demonstrated that there was a negative impact on the growth of the fish with increasing
inclusions of SPC. By contrast, the feed intake was not affected by SPC inclusion, but the apparent feed
conversion ratio was significantly increased (worse) above 30% SPC inclusion. The protein and energy efficiency
ratios were significantly reduced above 30% SPC inclusion. The whole body moisture and total fat
composition were affected above 20% SPC inclusion, but there was no effect on apparent dietary nutrient
digestibilities. Suboptimal water temperature significantly decreased all measured growth performance
and feed efficiency variables. By contrast, the protein and energy efficiency ratios were higher at 18 °C,
while the protein and energy retentions were not affected by temperature. The apparent dietary protein digestibility
was influenced by temperature, and its increase at 18 °C suggests the influence of a slower gut
transit time at the cooler temperature. This study indicates that juvenile yellowtail kingfish can effectively
utilise 20% SPC, regardless of water temperature.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | yellow tail kingfish, gut histology, digestion, soy |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Fisheries sciences |
| Research Field: | Aquaculture |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - aquaculture |
| Objective Field: | Aquaculture fin fish (excl. tuna) |
| UTAS Author: | Adams, LR (Dr Louise Adams) |
| ID Code: | 88040 |
| Year Published: | 2013 |
| Web of Science® Times Cited: | 34 |
| Deposited By: | NC Marine Conservation and Resource Sustainability |
| Deposited On: | 2014-01-08 |
| Last Modified: | 2014-05-14 |
| Downloads: | 1 View Download Statistics |
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