Title:	Hemato-biochemical and immunological responses of Colossoma macropomum (Serrasalmidae) induced by dietary supplementation with the clay mineral Attapulgite (Alphafeed®).
Authors:	FURTADO, Y. I. C. MOREIRA, M. V. F. PACHECO, A. M. AMANAJÁS, G. S. YOSHIOKA, E. T. O.
Affiliation:	YURI IAN CARVALHO FURTADO, UNIVERSIDADE FEDERAL DO AMAPÁ MOSA VALDINA FERREIRA MOREIRA, UNIVERSIDADE FEDERAL DO AMAPÁ AMANDA MENDES PACHECO, UNIVERSIDADE DO ESTADO DO AMAPÁ GISELLY SECÇÚ AMANAJÁS, UNIVERSIDADE FEDERAL DO AMAPÁ ELIANE TIE OBA YOSHIOKA, CPAF-AP.
Date Issued:	2026
Citation:	Revista Brasileira de Ciências Agrárias, v. 21, n. 1, e4344, 2026.
Description:	Aquaculture has been consolidating itself as an essential alternative to meet the global demand for animal protein, highlighting the importance of nutrition in maintaining fish physiology and health. Among the feed additives studied, attapulgite has generated interest for its effects on hematological, immunological, and biochemical modulation, although its physiological impacts on tambaqui fish are not yet fully understood. This study evaluated the hematological and immunological effects of dietary supplementation with different concentrations of attapulgite on juvenile tambaqui (Colossoma macropomum). At 20 and 40 days, blood samples from five fish per replicate were analyzed. Changes in hematocrit, hemoglobin, erythrocytes, and hematometric indices were observed. The concentrations of glucose, total protein, cholesterol, triglycerides, and albumin varied significantly with the inclusion of the adsorbent, indicating adverse impacts on metabolism. The leukocyte profile showed immune stimulation, with increased thrombocytes, lymphocytes, monocytes, and LG-PAS. It is concluded that supplementation with 1% attapulgite is safer for juvenile tambaqui, as it positively modulated the immune response and reduced impacts on metabolism.
Thesagro:	Aquicultura Peixe Tambaqui
DOI:	https://doi.org/10.5039/agraria.v21iia4344
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAF-AP)