Abstract
This study evaluated the effect of low, medium, and high-water salinity (5, 35, and 50 ppt) on the apparent dry matter, protein, and energy digestibility of two formulated and six commercial diets for juvenile whiteleg shrimp, Litopenaeus vannamei, in a 120-day trial. Digestibility was determined in vivo using chromic oxide as an inert diet marker. Hydrostability in pellets varied from 86.8% to 99.9%; dry matter digestibility varied from 49.1% to 64.1%; protein digestibility showed greater variations at all salinities (56.9%–85.8%); and energy digestibility ranged from 70.1 to 86.4%. Salinity had a significant effect on dry matter, protein, and energy digestibility. Using a principal component analysis (PCA) with a covariance matrix, our findings suggested that the E2 (fishmeal-based formulation) diet and 35 ppt salinity provided optimum hydrostability and digestibility to Pacific white leg shrimp juveniles.
Translated title of the contribution | Dry matter, protein, and energy digestibility of diets for juvenile pacific white leg shrimps (Litopenaeus vannamei) reared at different salinity levels |
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Original language | English |
Article number | e20190636 |
Journal | Ciencia Rural |
Volume | 51 |
Issue number | 8 |
DOIs | |
State | Published - 2021 |
Bibliographical note
Publisher Copyright:© 2021, Universidade Federal de Santa Maria. All rights reserved.
Keywords
- Commercial diets
- Digestibility
- Feed formulation
- Salinity
- Shrimp