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Impact of reference diet composition on apparent digestibility coefficients of two protein-rich ingredients in Nile tilapia
Silva, Maria Fernanda Oliveira da; Romaneli, Rafael de Souza; Mussoi, Luis Felipe; Masagounder, Karthik; Fracalossi, Débora Machado.
Affiliation
  • Silva, Maria Fernanda Oliveira da; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
  • Romaneli, Rafael de Souza; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
  • Mussoi, Luis Felipe; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
  • Masagounder, Karthik; Evonik Operations GmbH. Hanau-Wolfgang. DE
  • Fracalossi, Débora Machado; Universidade Federal de Santa Catarina. Centro de Ciências Agrárias. Departamento de Aquicultura. Florianópolis. BR
Sci. agric ; 80: e20220189, 2023. tab
Article in En | VETINDEX | ID: biblio-1434355
Responsible library: BR68.1
ABSTRACT
Protein quality is related to amino acid composition and digestibility. Accurate evaluation of apparent digestibility coefficients (ADCs) of nutrients in commonly used feedstuffs is paramount for formulating efficient aquafeed. ADCs of soybean meal (SBM) and poultry by-product meal (PBM) were evaluated using reference diets formulated with two types of ingredients (semi-purified [SP] and practical [P]) for juvenile Nile tilapia ( Oreochromis niloticus, Linnaeus) of the GIFT strain. Groups of 20 juveniles (65.05 ± 12.37 g) were fed twice a day to apparent satiety with one of the four experimental diets (SBM-SP, SBM-P, PBM-SP, and PBM-P) in quadruplicate for 30 days. After the last feeding, feces were collected by siphoning hourly and the ADCs of dry matter, protein, and amino acids (AAs) were calculated. Nile tilapia exhibited a high capacity to digest SBM and PBM, with most ADCs exceeding 90 %. The type of reference diet affected the ADCs of protein and AAs on the test ingredients, with the SP reference diet providing the highest ADC, mainly in SBM. Digestibility data generated with a P-type reference diet demonstrated more practical relevance than those generated with an SP-type reference diet. They can be applied in digestibility studies for Nile tilapia.(AU)
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Full text: 1 Database: VETINDEX Main subject: Eating / Food Ingredients / Meat Limits: Animals Language: En Journal: Sci. agric Year: 2023 Document type: Article

Full text: 1 Database: VETINDEX Main subject: Eating / Food Ingredients / Meat Limits: Animals Language: En Journal: Sci. agric Year: 2023 Document type: Article