The effect of dietary indispensable amino acid imbalances on feed intake: Is there a sensing of deficiency and neural signaling present in fish?

Dąbrowski, Konrad; Arslan, Murat; Terjesen, Bendik Fyhn; Zhang, Yongfang

doi:10.1016/j.aquaculture.2007.04.065

Cited by 36 publications

(27 citation statements)

References 14 publications

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“…No entanto, o uso dessas rações pode ser prejudicial para o crescimento dos peixes, pois reduz o consumo de ração em razão da reduzida palatabilidade apresentada (Berge et al, 2002), especialmente quando essas dietas são deficientes em aminoácidos essenciais, particularmente lisina (Dabrowski et al, 2007). No presente estudo, as tilápias foram alimentadas com dietas do tipo práticas e suplementadas com aminoácidos sintéticos, de forma a obterem os níveis nutricionais preconizados, não sendo observado efeito sobre o consumo de ração, independentemente do nível de lisina utilizado nas rações.…”

Section: Resultsunclassified

Adição de lisina digestível em rações experimentais para juvenis de tilápia-do-nilo

Rampe

Pacheco

Júnior

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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 RESUMOObjetivou-se por meio deste estudo determinar a necessidade nutricional de lisina digestível em rações para juvenis de tilápia-do-nilo (Oreochromis niloticus). Setecentos e vinte peixes masculinizados (7,30±0,11g) foram alimentados durante 30 dias com oito rações (26,81% de proteína digestível e 3090kcal/kg de energia digestível da ração) contendo teores crescentes de lisina digestível (1,24; 1,36; 1,48; 1,60; 1,72; 1,84; 1,96 e 2,08%). As tilápias foram distribuídas em delineamento inteiramente ao acaso, com oito tratamentos, seis repetições e 15 peixes por unidade experimental. Foram avaliadas variáveis de desempenho (ganho de peso, taxa de crescimento específico, taxa de sobrevivência, consumo de ração, consumo de lisina digestível, conversão alimentar aparente, eficiência proteica para ganho, eficiência de lisina para ganho e eficiência de retenção de nitrogênio) e de composição corporal (teores de umidade, gordura, proteína, matéria mineral corporal e as taxas de deposição diária de proteína e gordura corporais). A elevação do teor de lisina digestível na ração não influenciou (P>0,05) o consumo de ração, a taxa de sobrevivência e os teores de umidade e de matéria mineral corporal, mas melhorou de forma quadrática (P<0,05) os demais parâmetros avaliados, com exceção do consumo de lisina e da eficiência de lisina para ganho, que aumentou e reduziu, respectivamente, de forma linear (P<0,05). Recomenda-se que rações para juvenis de tilápia-do-nilo devam conter 1,84% de lisina digestível para máximo ganho de peso. (1.24, 1.36, 1.48, 1.60, 1.72, 1.84, 1.96 Palavras-chave: aminoácidos digestíveis, lisina sintética, nutrição proteica, Oreochromis niloticus ABSTRACT The aim of this study was to determine the nutritional need of lysine in diets for juvenile Nile tilapia (Oreochromis niloticus). Seven hundred and twenty masculinized fish (7.30±0.11g) were fed for 30 days with eight diets (26.81% of digestible protein and 3090 kcal/kg digestible energy of feed) containing increasing levels of lysine

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Section: Resultsunclassified

Adição de lisina digestível em rações experimentais para juvenis de tilápia-do-nilo

Rampe

Pacheco

Júnior

et al. 2014

Arq. Bras. Med. Vet. Zootec.

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“…In contrast, feed intake was measured in the current study, and no differences were observed among diets, indicating that palatability was not an issue. Moreover, while fish are able to compensate for some imbalances in dietary amino acid composition by modifying intake (Yamamoto et al 2000; Dabrowski et al 2007), the feed data show no reductions or trends in consumption that can be related to dietary levels or ratios of IAA of interest.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Poultry By‐product Meal in Commercial Diets for Hybrid Striped Bass, Morone chrysops ♀ × Morone saxatilis ♂, in Pond Production

Rawles¹,

Gaylord²,

McEntire³

et al. 2009

J World Aquaculture Soc

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The efficacy of replacing fish meal with petfood‐grade poultry by‐product meal (PBM) on an ideal protein basis in commercial diets for hybrid striped bass (HSB) was evaluated under production conditions in pond culture. A generic production diet (GEN) for HSB was formulated to contain 45% protein, 12% lipid, and 3.7 kcal/kg. Protein in the generic diet was supplied by a mix of animal and plant sources typically used by the industry that included more than 20% select menhaden fish meal and less than 10% PBM. A positive control diet (GEN + AA) was formulated by supplementing the generic diet with feed‐grade Met and Lys to match the level of those amino acids in HSB muscle at 40% digestible protein. Substitution diets were formulated by replacing 35, 70, or 100% of fish meal in the GEN diet with PBM on a digestible protein basis and then supplementing with Met and Lys (designated 35PBM, 70PBM, and 100PBM, respectively) as needed to maintain concentrations equal to those in the GEN + AA diet. Diet formulation and extrusion were conducted by a commercial mill, and all diets met or exceeded known nutritional requirements for HSB. Twenty 0.10‐ha ponds (4 ponds/diet) were randomly stocked with juvenile HSB (76 ± 10 g; mean ± SD) at a density of 7400/ha and fed for 600 d (October 2004 to May 2006). Diets were fed once daily to apparent satiation to a maximum of 95 kg feed/ha. Total weight and number of fish in each pond were determined at harvest. Weight distributions in each pond were estimated by selecting every 15th fish during harvest. Subsets of ten fish from each of these samples were selected randomly for the determination of body composition and nutrient and energy retention. The availability of indispensable amino acids as well as ammonia production from the commercial test diets were determined in separate tank trials. Most production characteristics were not statistically different (P > 0.10) among dietary treatments. Distributions of individual fish weights from each of the ponds were not affected by poultry by‐product level in the diet. Multivariate analysis of body compositional indices grouped diets into two clusters composed of GEN, GEN + AA, 35PBM vs. 70PBM, and 100PBM mainly because fish fed the 70PBM and 100PBM diets had greater (P = 0.001) body fat (visceral somatic indices) than fish fed the other diets. Ammonia production in tanks was not different among diets and peaked 6–8 h after feeding when fish were fed at 1.5% of body weight; ammonia‐N excretion ranged from 197 to 212 mg/kg/d and 18.5–21.5% of nitrogen intake. Some imbalances in the levels and ratios of selected amino acids to Lys were found in the diets containing higher amounts of PBM and were attributed to a lack of accurate availability coefficients during formulation for some dietary proteins. These imbalances in essential amino acids may have been the predominant factor in the somewhat fattier fish observed fed diets containing the two highest levels of PBM. Nevertheless, these results from fish stocked at commercial densities ...

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“…This pathology is remarkably similar in appearance to the atrophic intestinal epithelium in mammals subjected to parenteral nutrition (Ihara, Tsujikawa, Fujiyama & Bamba 2000). In cichlid ¢sh, the utilization of the yolk sac through the process of yolk hydrolysis and macromolecular particle exocytosis to the vascular system (Fishelson1995) coexists with the process of active feeding and this perhaps contributes to the ability of cichlids to utilize dietary free amino acids (Santiago & Lovell1988;Dabrowski, Arslan, Terjesen & Zhang 2007a). However, with respect to midas (Amphilophus citrinellum), the free amino acid-based diet weight gain was observed to be highly inferior (26%) in comparison with protein-based diet (68%) weight gains (Dabrowski et al 2007a).…”

Section: Introductionmentioning

confidence: 99%

Effects of protein-, peptide- and free amino acid-based diets in fish nutrition

Dąbrowski

Zhang

Kwasek

et al. 2010

Aquaculture Research

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In the present review, we summarize data related to the utilization of purified diets formulated with the purpose of determining the amino acid requirements in fish independent of the ontogenetic stage and the morphological characteristics of the digestive tract. Expanding present knowledge on the formulation of protein, free amino acid (FAA) and synthetic dipeptide‐based diets can provide possible insights that might lead to a better understanding of the mechanism of amino acid utilization in the growth of fish. Differences exist in the utilization of protein, dipeptides or free amino acids for growth between stomach‐possessing and stomachless fish with respect to their response to manipulating the proportion of protein and dipeptides in the formulas. Free amino acid‐based diets are uniformly inferior. The effects of diet manipulation on indispensable FAA concentrations in the body (muscle) are not simply the result of deamination or the protein synthesis/degradation ratio. The hydroxyproline/proline ratio was confirmed to be of value in quantifying muscle collagen degradation/synthesis and can perhaps be used to quantify the amino acid requirement necessary to maximize the utilization (deposition) of dietary amino acids. In summary, indispensable amino acid requirements for maximum growth in fish can be addressed using diets formulated from protein/peptide/FAA sources.

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The effect of dietary indispensable amino acid imbalances on feed intake: Is there a sensing of deficiency and neural signaling present in fish?

Cited by 36 publications

References 14 publications

Adição de lisina digestível em rações experimentais para juvenis de tilápia-do-nilo

Adição de lisina digestível em rações experimentais para juvenis de tilápia-do-nilo

Evaluation of Poultry By‐product Meal in Commercial Diets for Hybrid Striped Bass, Morone chrysops ♀ × Morone saxatilis ♂, in Pond Production

Effects of protein-, peptide- and free amino acid-based diets in fish nutrition

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