Effects of lysine on growth,physiological and biochemical indexes of blood and essential amino acids of serum in juvenile blunt snout bream(<i>Megalobrama amblycephala</i>)

Liao, Yingjie; Liu, Bo; Ren, Mingchun; Cui, Honghong; Xie, Jun; Ge, Xianping

doi:10.3724/sp.j.1231.2013.38743

Cited by 8 publications

(3 citation statements)

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“…There is more information concerning the basic nutrient requirements of blunt snout bream from studies, and 310–340 g/kg dietary protein and 70–80 g/kg lipid were determined to be optimal for growth (Li et al., , ; Ren, Habte‐Tsion, Liu, Miao, Ge, Xie, Liang, et al., ). In recent years, our research team has investigated dietary essential amino acid (EAA) requirements of blunt snout bream: arginine (Ren et al., ), lysine (Liao et al., ), methionine (Liao et al., ), threonine (Habte‐Tsion, Liu, et al., ), phenylalanine (Ren, Liu, et al., ) and isoleucine (Ren, Habte‐Tsion, Liu, Miao, Ge, Xie, & Zhou, ). In previous study, Lu et al.…”

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confidence: 99%

Dietary histidine requirement of juvenile blunt snout bream (Megalobrama amblycephala)

et al. 2018

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An eight-week feeding trial was conducted to determine the dietary histidine requirement of juvenile blunt snout bream. The results showed that final body weight, weight gain rate and specific growth rate significantly increased with increasing dietary histidine levels up to 9.9 g/kg (p < .05) and decreased gradually thereafter, while feed conversion ratio showed a converse trend. The survival rate, condition factor, viscerosomatic and hepatosomatic index were not significantly affected by the graded dietary histidine levels (p > .05). About 9.9 g/kg dietary histidine level significantly improved whole-body protein and lowered moisture content. The contents of plasma total protein, cholesterol, urea and triglyceride levels were not significantly affected by dietary histidine levels. About 9.9 g/kg dietary histidine level significantly upregulated target of rapamycin and insulin-like growth factor mRNA levels (p < .05), and 12.1 g/ kg and 14.2 g/kg dietary histidine levels significantly upregulated eukaryotic translation initiation factor 4E-binding protein 2 and ribosomal protein S6 kinase-polypeptide 1 mRNA levels (p < .05). Based on second-degree polynomial regression analysis of weight gain rate, and specific growth rate against dietary histidine levels, the dietary histidine requirement for juvenile blunt snout bream was estimated to be 11.2 g/kg of diet, corresponding to 36.1 g/kg of dietary protein. K E Y W O R D Sblunt snout bream (Megalobrama amblycephala), gene expression, growth performance, histidine requirement, IGF-1, TOR signalling pathway

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Section: Introductionmentioning

confidence: 99%

Dietary histidine requirement of juvenile blunt snout bream (Megalobrama amblycephala)

et al. 2018

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“…Additional information on the basic nutrient requirements of this species has been reported within the last decade. However, quantitative estimates of dietary EAA requirements of blunt snout bream are limited to arginine (Ren et al., ), lysine (Liao et al., ) and methionine (Liao et al., ). No current data is available on dietary valine requirements of blunt snout bream.…”

Section: Introductionmentioning

confidence: 99%

Dietary valine requirement of juvenile blunt snout bream (Megalobrama amblycephalaYih, 1955)

et al. 2015

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Summary An 8‐week feeding trial was carried out to test the hypothesis that adequate dietary valine might improve growth, feed utilization and protein content in blunt snout bream, whereas a valine deficiency might have adverse effects on these parameters. Six isonitrogenous (34% crude protein) and isoenergetic (14.2 MJ kg−1 digestible energy) experimental diets were formulated to contain graded valine levels (0.66, 0.95, 1.26, 1.55, 1.87 and 2.16% of dry weight) at about 0.30% increments replaced by equal proportions of glycine. At the end of the experiment the survival rate was not significantly affected by the dietary valine level. Final weight, weight gain (WG), specific growth rate (SGR), feed efficiency ratio (FER) and protein efficiency ratio (PER) increased with an increasing dietary valine level up to the 1.26% diet, and thereafter remained relatively constant. Dietary valine levels significantly affected the viscerosomatic index, but not the hepatosomatic index or condition factor. The dietary valine levels significantly affected the protein contents of whole body and plasma. Dietary valine supplementation significantly increased the plasma valine concentration, but not the levels of other branched‐chain amino acids (isoleucine and leucine). Based on SGR and FER, the optimal dietary valine requirements of juvenile blunt snout bream were determined to be 1.32% of the diet (3.88% of dietary protein) and 1.26% of the diet (3.71% of dietary protein), respectively, using broken‐line regression analysis.

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“…However, an imbalanced essential amino acid profile has hampered the total replacement of FM in the diet of this species. The optimal lysine content has been reported to be 23.6 g/kg (Liao et al ), the optimal methionine content to be 8.5 g/kg (Liao et al ), and the optimal arginine content to be 24.6 g/kg of feed (Ren et al ). Nevertheless, SBM contains more lysine than CSM and CM, CSM has the highest level of arginine, and CM has the highest methionine content among these three proteins, although they were still lower than those in FM (Table ).…”

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Optimizing the Proportions of Plant Protein Ingredients in the Diet of Juvenile Blunt Snout Bream, Megalobrama amblycephala

Zhou

Yuan

Pan

et al. 2017

J World Aquaculture Soc

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An 8‐wk feeding trial was conducted to evaluate the influence of different proportions of dietary plant ingredients on the growth of juvenile blunt snout bream, Megalobrama amblycephala. A 2 × 3 factorial arrangement was set for this trial with three ratios of cottonseed meal (CSM) and canola meal (CM) (2:1, 1:1, or 1:2) and three proportions of soybean meal (SBM) (2, 1, or 0). The results showed that the specific growth rate and protein efficiency ratio both significantly decreased with decreasing amounts of SBM in the diets of blunt snout bream (P < 0.05), while the feed efficiency ratio and feed intake increased significantly (P < 0.05). Meanwhile, the growth performance and feed utilization were shown to improve with increasing amounts of CSM, although the effects were not significant (P > 0.05). The interaction of these two factors had no effect on either growth or feed utilization (P > 0.05). Diet composition was not seen to affect body composition (P > 0.05). The ratio of CSM to CM significantly affected gut amylase activity, liver alanine aminotransferase content, and plasma cholesterol levels (P < 0.05). The interaction between the two main effects significantly influenced the plasma glucose level (P < 0.05). Therefore, the suitable proportion of plant feed for blunt snout bream should include high levels of SBM and CSM, with a SBM : CSM : CM ratio of 2:2:1.

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Effects of lysine on growth,physiological and biochemical indexes of blood and essential amino acids of serum in juvenile blunt snout bream(Megalobrama amblycephala)

Cited by 8 publications

References 0 publications

Dietary histidine requirement of juvenile blunt snout bream (Megalobrama amblycephala)

Dietary histidine requirement of juvenile blunt snout bream (Megalobrama amblycephala)

Dietary valine requirement of juvenile blunt snout bream (Megalobrama amblycephalaYih, 1955)

Optimizing the Proportions of Plant Protein Ingredients in the Diet of Juvenile Blunt Snout Bream, Megalobrama amblycephala

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