PMID- 28954015 OWN - NLM STAT- MEDLINE DCOM- 20180918 LR - 20181004 IS - 1678-4375 (Electronic) IS - 1519-6984 (Linking) VI - 78 IP - 2 DP - 2018 May TI - Changes on physiological parameters of tambaqui (Colossoma macropomum) fed with diets supplemented with Amazonian fruit Camu camu (Myrciaria dubia). PG - 360-367 LID - S1519-69842017005111103 [pii] LID - 10.1590/1519-6984.169442 [doi] AB - The physiological responses of juvenile tambaqui (Colossoma macropomum) fed commercial feed supplemented with different concentrations of camu camu (Myrciaria dubia) were evaluated. The design was completely randomized, with treatments arranged in a factorial design with three proportions of camu camu (15%, 30% and 45%) and a control treatment (100% commercial diet), with four replicates per treatment. A total of 96 tambaqui specimens were used, with a mean initial weight of 11.69 +/- 2.68 g and a mean length of 7.06 +/- 0.44 cm. After 30 days, hematological parameters, metabolic variables, growth and fish swimming performance were evaluated. The different proportions of camu camu in the diet did not cause significant changes to the tambaqui's hematological parameters during the feeding period, except for hemoglobin (Hb) concentration and mean corpuscular hemoglobin concentration (MCHC) after the 30th day, and hematocrit (Ht) after the swimming stress test, which increased significantly (p < 0.05). The significant increases in metabolic variables, such as cortisol, glucose, proteins and triglycerides, and in hematologic variables after the Ucrit test reflect, respectively, biochemical adaptations for maintenance of the energy mobilization process and a regulatory necessity in tissue oxygen demand during intense exercise. Fish fed 15% and 30% camu camu gained the most weight and achieved the best swimming performance, respectively. The results for camu camu concentrations above 30% suggest a saturation of its intrinsic properties in the diet at this level and a loss of nutrients from the commercial feed replaced by the fruit, reducing productive performance and nutritional assimilation. FAU - Aride, P H R AU - Aride PHR AD - Instituto Federal de Educacao, Ciencia e Tecnologia do Espirito Santo, Pipuma, ES, Brazil. FAU - Oliveira, A M AU - Oliveira AM AD - Instituto Nacional de Pesquisas da Amazonia, Petropolis, RJ, Brazil. FAU - Batista, R B AU - Batista RB AD - Instituto Nacional de Pesquisas da Amazonia, Petropolis, RJ, Brazil. FAU - Ferreira, M S AU - Ferreira MS AD - Instituto Nacional de Pesquisas da Amazonia, Petropolis, RJ, Brazil. FAU - Pantoja-Lima, J AU - Pantoja-Lima J AD - Instituto Federal de Educacao, Ciencia e Tecnologia do Amazonas, Presidente Figueiredo, AM, Brazil. FAU - Ladislau, D S AU - Ladislau DS AD - Universidade Federal do Amazonas, Manaus, AM, Brazil. FAU - Castro, P D S AU - Castro PDS AD - Universidade Federal do Amazonas, Manaus, AM, Brazil. FAU - Oliveira, A T AU - Oliveira AT AD - Instituto Federal de Educacao, Ciencia e Tecnologia do Amazonas, Manaus, AM, Brazil. LA - eng PT - Journal Article DEP - 20170921 PL - Brazil TA - Braz J Biol JT - Brazilian journal of biology = Revista brasleira de biologia JID - 101129542 RN - 0 (Hemoglobins) SB - IM MH - Animals MH - Behavior, Animal/physiology MH - Characiformes/*physiology MH - *Diet/methods/veterinary MH - Feeding Behavior/*physiology MH - *Fruit MH - Hematologic Tests MH - Hemoglobins/analysis MH - *Myrtaceae EDAT- 2017/09/28 06:00 MHDA- 2018/09/19 06:00 CRDT- 2017/09/28 06:00 PHST- 2016/09/18 00:00 [received] PHST- 2016/11/30 00:00 [accepted] PHST- 2017/09/28 06:00 [pubmed] PHST- 2018/09/19 06:00 [medline] PHST- 2017/09/28 06:00 [entrez] AID - S1519-69842017005111103 [pii] AID - 10.1590/1519-6984.169442 [doi] PST - ppublish SO - Braz J Biol. 2018 May;78(2):360-367. doi: 10.1590/1519-6984.169442. Epub 2017 Sep 21.