Dietary methionine requirement for juvenile rockfish, Sebastes schlegeli

Yan, Qingyun; Xie, Shouqi; Zhu, Xiaoming; Wu, Lei; Yang, Yunxia

doi:10.1111/j.1365-2095.2007.00461.x

Cited by 77 publications

(86 citation statements)

References 29 publications

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“…Thus, based on the results of this study, a minimum of 5.30 and 5.70 g/kg of methionine is required for weight gain and fillet yield, respectively, in diets for the Nile tilapia. In this study, the highest levels of protein in the whole body are in accordance with the results obtained by Yan et al (2007). However, the authors did not observe reduction in the whole body fat.…”

Section: Resultssupporting

confidence: 81%

Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

et al. 2013

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-This trial was conducted to determine the dietary digestible methionine + cystine requirement of Nile tilapia (550 to 700 g) based on the ideal protein concept. Six hundred fish were distributed in a completely randomized design with five treatments and four replicates, with 30 fish per experimental unit. The fish were fed diets containing approximately 262 g of digestible protein/kg, 3,040 kcal of digestible energy/kg and 7.90, 9.40, 10.90, 12.40 or 13.90 g of methionine + cystine/kg. The fish were hand-fed three times a day until apparent satiation for 30 days. No effects of dietary methionine + cystine on feed conversion ratio, daily protein deposition, whole body moisture, fillet moisture, crude protein, ether extract and ash, plasmatic HDL and LDL cholesterol were observed. Dietary methionine resulted in a linear increase in whole body protein and linear reduction in lipid deposition rate, hepatosomatic index, whole body ether extract and ash, plasmatic total cholesterol, plasmatic total lipids and plasmatic triglycerides. According to the Linear Response Plateau, the daily weight gain and fillet yield increased up to a level of 9.00 and 9.90 g methionine + cystine/kg of diet, respectively. The digestible methionine + cystine requirement of Nile tilapia is 9.00 g/kg for weight gain and 9.90 g/kg for fillet yield, corresponding to methionine + cystine:lysine ratios of 0.60 and 0.66, respectively.

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Section: Resultssupporting

confidence: 81%

Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

et al. 2013

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“…Methionine is usually the first limiting amino acid in some plant protein sources to replace fish meal (Mai et al 2006;Sardar et al 2009). Methionine deficiency results in slow growth and reduced feed efficiency in Atlantic salmon (Salmo salar L.) (Opstvedt et al 2003), juvenile cobia (Rachycentron canadum) (Zhou et al 2006), juvenile rockfish (Sebastes schlegeli) (Yan et al 2007), juvenile black sea bream (Sparus macrocephalus) (Zhou et al 2011a,b) and Indian major carp fry (Cirrhinus mrigala) (Mukhtar & Shabi 2013). Besides, dietary methionine deficiency caused bilateral cataracts in some fish species (Cowey 1992;Ruchimat et al 1997;Takagi et al 2001).…”

mentioning

confidence: 98%

Dietary methionine requirement of juvenile blunt snout bream (Megalobrama amblycephala) at a constant dietary cystine level

et al. 2014

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A 9-week feeding trial was conducted to investigate the dietary methionine requirement of juvenile Megalobrama amblycephala at a constant dietary cystine level. Six semipurified diets were formulated to contain graded dietary methionine levels from 3.9 to 15.4 g kg À1 in about 2.5 g kg À1 increments in the presence of 2.2 g kg À1 cystine. Results showed that specific growth rate (SGR) and protein efficiency ratio (PER) significantly increased with increasing dietary methionine levels from 3.9 to 12.4 g kg À1 and thereafter kept stable. Maximum protein productive value (PPV), nitrogen retention efficiency (NRE) and liver weight were observed in 8.5 g methionine kg À1 diet. Protein contents in whole fish body were positively correlated with dietary methionine level, while lipid contents were negatively correlated with it. Morphological index and hepatic glutamate-pyruvate transaminase (GPT) activities were independent of dietary methionine levels. However, dietary methionine supplementation significantly improved haematological parameters, plasma methionine and total essential amino acid contents and hepatic glutamate-oxaloacetate transaminase (GOT) activities. Analysis of dose response using broken-line regression on the basis of SGR and PPV versus dietary methionine level estimated the optimum dietary methionine requirements of juvenile M. amblycephala to be between 8.5 and 8.4 g kg À1 of diet (25.0 and 24.7 g kg À1 of protein) in the presence of 2.2 g kg À1 cystine, respectively. Hence, the corresponding total sulphur amino acids requirements of this species were calculated to be 10.7 and 10.6 g kg À1 of diet (31.5 and 31.2 g kg À1 of dietary protein).

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“…, CA/GE (Williams, 1985;Moon and Gatlin, 1989). (Table 1), VP FM, CA, GE, SBM, CGM 50% 10% , (Lee and Lee, 1994;Yan et al, 2007). , (CPR) 56% 8% .…”

Section: /3mentioning

confidence: 97%

Effect of Dietary Proteins without Vitamin Premix Supplementation on the Growth and Body Composition of Juvenile Black Rockfish Sebastes schlegeli

Lee¹

2016

Korean Journal of Fisheries and Aquatic Sciences

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A feeding experiment was conducted to determine the nutritional value of various dietary protein sources without a vitamin premix supplementation in juvenile black rockfish, Sebastes schlegeli. Diets containing similar quantities of lipid and carbohydrate with 50% crude protein from fish meal (FM)/soybean meal (SBM)/corn gluten meal (CGM), FM only, casein/gelatin, high FM/low casein and low FM/high casein were fed to rockfish along with a commercial rockfish diet. The diet containing only 65.6% FM and the commercial rockfish diet produced significantly greater weight gain (WG) and feed efficiency (FE) than all other semipurified diets (SPDs); the economical diet with 52.8% FM, 10% SBM and 5% CGM produced lower WG than the diet containing FM and commercial rockfish diet, but FE and survival were similar both diets. Intermediate responses were observed for rockfish fed the SPD containing 32.8% FM and 27.4% casein, while SPDs containing 10% FM and 41.8% casein and 38.5% casein and 10% gelatin yielded the lowest WG and FE. Some differences in tissue indices and body composition of rockfish were induced by the diets containing various protein sources and levels without the vitamin premix supplementation.

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Dietary methionine requirement for juvenile rockfish, Sebastes schlegeli

Cited by 77 publications

References 29 publications

Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

Digestible methionine + cystine requirement for Nile tilapia from 550 to 700 g

Dietary methionine requirement of juvenile blunt snout bream (Megalobrama amblycephala) at a constant dietary cystine level

Effect of Dietary Proteins without Vitamin Premix Supplementation on the Growth and Body Composition of Juvenile Black Rockfish Sebastes schlegeli

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