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|
|Original language||Portuguese (Brazil)|
|State||Published - 2021|
Bibliographical noteFunding Information:
The authors thank S. de La Paz, S. Rocha, D. Rondero, and E. Goytortúa, for their hard work and dedication to complete this study; to D. Fischer for editorial services. Shrimp were obtained from Granjas Marinas de Sinaloa S.A. de C.V. Funding was provided by Secretaria de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación y Consejo Nacional de Ciencia y Tecnología (SAGARPA-CONACYT) Project 2003-C02-
The authors thank S. de La Paz, S. Rocha, D. Rondero, and E. Goytort?a, for their hard work and dedication to complete this study; to D. Fischer for editorial services. Shrimp were obtained from Granjas Marinas de Sinaloa S.A. de C.V. Funding was provided by Secretaria de Agricultura, Ganader?a, Desarrollo Rural, Pesca y Alimentaci?n y Consejo Nacional de Ciencia y Tecnolog?a (SAGARPA-CONACYT) Project 2003-C02-149 and CONACYT-FC2016/2930.
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- Commercial diets
- Feed formulation