3.8 Article

Rice ethanol distillery residue as a protein source in the diet of silver catfish (Rhamdia quelen)

期刊

JOURNAL OF APPLIED AQUACULTURE
卷 34, 期 1, 页码 97-111

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/10454438.2020.1822255

关键词

Rice biorefinery; fish nutrition; protein

资金

  1. Rio Grande do Sul State Research Support Foundation (FAPERGS) [41822.540.15414.11072019]
  2. National Council for Scientific and Technological Development (CNPq)
  3. Coordination for the Improvement of Higher Education Personnel (CAPES)

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The study evaluated the partial replacement of fish meal protein with protein from rice ethanol distilleries in Rhamdia quelen. The results showed that the replacement diet had negative effects on growth and protein deposition in the fish, indicating the need for further research on the protein quality of this ingredient.
The objective of the study was to evaluate the partial replacement of the protein of fish meal by the protein from the intermediate residue of rice ethanol distilleries in the proportions of 0%, 25%, and 50% inRhamdia quelen. Three hundred and seventy-five fish (3.56 +/- 0.6 g/7.07 +/- 0.46 cm) were distributed in 15 tanks and fed three times a day for 60 days. At the end of the period, biometrics were performed to collect data and tissues, evaluating growth parameters, sonatic indices, digestive enzyme activity, plasma and hepatic metabolism, body nutrient composition, protein, and fat deposition. Fish fed the control diet showed higher feed intake (765.86 +/- 53.86 g). The 50% replacement diet reduced final growth (14.27 +/- 3.88 g), deposition of body protein (1.63 +/- 0.05 g) and increased free liver amino acids (8.72 +/- 0.41). The use of intermediate residue from rice ethanol distilleries in silver catfish diets was inefficient, requiring further studies to evaluate the protein quality of this ingredient.

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