Incorporação de farinhas de resíduos de Jundiá na dieta: bioquímica plasmática, parâmetros hepáticos e digestivos

This study was performed to determine the dietary methionine requirements and its effects on growth performance, plasma and hepatic metabolites for juvenile silver catfish. The fish (initial weight = 3.26 AE 0.3 g) were distributed in 24 experimental units (35 fish each). Six diets were formulated with increasing levels of methionine (09, 16, 23, 30, 37 and 44 g/kg protein diet). Each diet was distributed randomly to the groups, with four replicates fed twice daily to apparent satiation for 15 weeks.Methionine levels influenced in body composition (moisture and ash), and submit effect on liver metabolism and plasma. The relative weight gain (RWG) and specific growth rate (SGR) increased with highest levels of methionine to 30 g/kg protein in the diet, thereafter maintaining a nearly constant level of 1.9 g/kg cystine in the protein diet. The protein retention coefficient (PRC) also increased with increasing levels of up to 23 g/kg protein diet, thereafter maintaining a constant level of 1.9 g/kg cystine protein diet until beginning to decrease at a level of 44 g/kg protein diet. In conclusion, methionine is an essential amino acid for the growth of juvenile silver catfish and exhibits an efficient capacity when provided as a synthetic amino acid. Based on the RWG and SGR data, the methionine requirement of juvenile silver catfish was estimated at 34.42 and 35.85 g/kg of the CP or 12.74 g/kg and 13.26 g/kg of the diet respectively. K E Y W O R D S amino acid, protein retention coefficient, relative weight gain, sulphur

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“…Whole silver catfish that did not reach commercial weight were used according to the methodology of Rossato et al. ().…”

Section: Methodsmentioning

confidence: 99%

Determination of methionine requirement of juvenile silver catfish (Rhamdia quelen) and its effects on growth performance, plasma and hepatic metabolites at a constant cystine level

et al. 2017

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“… c Jundiá waste meal [43.94% fish below commercial size; 42.7% filleting residues; 4% viscera; 9.4% heads and flippers, according to the methodology of Rossato et al (2013)]. …”

Section: Methodsmentioning

confidence: 99%

Synchronic use of protein and carbohydrate sources for improved growth performance in Jundiá

Pretto

Pianesso

Pedron

et al. 2021

Aquaculture Research

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This study investigated the effects of different combinations of protein and carbohydrates on growth performance, body composition, blood and liver biochemical parameters, and intestinal enzyme activities of Rhamdia quelen. The jundiá (4.03 ± 0.02 g) were divided into groups with each group fed for 40 days with a diet as follows: casein + corn starch (CASCS), casein + fructose (CASFRU), gelatin + casein + maltodextrin (GCASMALDEX), fish meal + corn starch (FMCS), and fish meal + fructose (FMFRU). After this period, significantly higher growth was observed in fish that were fed the FMCS diet. In addition, the fish in the FMCS treatment group exhibited higher levels of amino acids, cholesterol, glucose, and plasma proteins, higher activity of lipase and lower activity of chymotrypsin and trypsin, and higher protein and lipid retention than those in other treatments. The digestive somatic index of the fish on the CASFRU diet increased significantly throughout the experimental period. Increased activity of maltase in the jundiá that received the CASCS diet, and alanine aminotransferase in the fish receiving the FMFRU treatment were observed. In conclusion, the jundiá that received the FMCS diet showed better digestive and metabolic efficiency and consequently better growth performance.

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“…A produção de farinha de peixe proveniente da aquicultura, além de suprir a demanda crescente de proteína na nutrição animal, reduz o descarte e consequentemente o impacto desse resíduo quando descartado (ROSSATO et al, 2013). Segundo os resíduos do cultivo de Tilápia-do-nilo (Oreochromis niloticus) representam em torno de 65% do total da matéria prima.…”

Section: Farinha De Peixeunclassified

Tópicos em Agroecologia - Volume 2

2020

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Incorporação de farinhas de resíduos de Jundiá na dieta: bioquímica plasmática, parâmetros hepáticos e digestivos

Cited by 6 publications

References 24 publications

Determination of methionine requirement of juvenile silver catfish (Rhamdia quelen) and its effects on growth performance, plasma and hepatic metabolites at a constant cystine level

Determination of methionine requirement of juvenile silver catfish (Rhamdia quelen) and its effects on growth performance, plasma and hepatic metabolites at a constant cystine level

Synchronic use of protein and carbohydrate sources for improved growth performance in Jundiá

Tópicos em Agroecologia - Volume 2

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