Estimation of the dietary essential amino acid requirements of colliroja  Astyanax fasciatus by using the ideal protein concept

Colliroja, Astyanax fasciatus, is a new aquaculture species, and information on its dietary essential amino acid requirements is lacking. The whole body composition of 120 farmed fish (16.2 ± 8.8 g) was determined to estimate the dietary essential amino acid requirement based on the ideal protein concept ((each essential amino acid/lysine) ×100), and the findings were correlated to the whole body essential amino acid content of Nile tilapia Oreochromis niloticus. The dietary essential amino acids, including cysteine and tyrosine, accounted for 5.46, 4.62, 1.16, 3.28, 5.63, 2.01, 2.59, 2.84, 4.66, 3.39, 0.65, and 3.51% of the total protein for lysine, arginine, histidine, isoleucine, leucine, methionine, methionine+tyrosine, phenylalanine, phenylalanine+tyrosine, threonine, tryptophan, and valine, respectively. There were positive linear and high correlations (r = 0.971) between the whole body amino acid profiles of colliroja and Nile tilapia. Thus, the whole body amino acid profile of colliroja might be used to estimate accurately the essential amino acid requirement.

Download Full-text

Amino acid requirements of the growing meat rabbit 1. The amino acid composition of rabbit whole-body tissue — a theoretical estimate of ideal amino acid balance

Animal Science ◽

10.1017/s0003356100003391 ◽

1988 ◽

Vol 47 (2) ◽

pp. 297-301 ◽

Cited By ~ 11

Author(s):

P. J. Moughan ◽

W. H. Schultze ◽

W. C. Smith

Keyword(s):

Amino Acid ◽

Amino Acid Composition ◽

Acid Composition ◽

Essential Amino Acid ◽

Theoretical Estimate ◽

Body Tissue ◽

Whole Body ◽

Methionine Concentration ◽

Amino Acid Requirements ◽

Amino Acid Balance

ABSTRACTWhole-body amino acid composition was determined in six male and six female 53-day-old New Zealand White rabbits. There were no significant sex differences in whole-body amino acid compositition except for arginine and glycine where whole-body concentrations (g/16 g N) were significantly lower in the females (P < 0·05). Overall mean whole-body essential amino acid levels (relative to lysine = 100 units) were methionine = 20; cystine = 41; histidine = 50; phenylalanine = 65; tyrosine = 50; threonine = 64; leucine = 112; isoleucine = 51; valine = 62; arginine = 109. The lysine concentration of rabbit whole-body tissue was 6·12 g/16 g N. There was close agreement between rabbit whole-body amino acid composition and corresponding published values for the rat and pig, although the rabbit whole-body cystine was high and methionine concentration low compared with the rat or pig. The rabbit whole-body amino acid pattern can be regarded as approximating an ideal balance of dietary amino acids and as such indicates discrepancies in current recommendations on the essential amino acid requirements for growth in the meat rabbit.

Download Full-text

Whole‐body amino acid pattern of juvenile, preadult, and adult pacu,Piaractus mesopotamicus,with an estimation of its dietary essential amino acid requirements

Journal of the World Aquaculture Society ◽

10.1111/jwas.12600 ◽

2019 ◽

Vol 51 (1) ◽

pp. 224-234 ◽

Cited By ~ 5

Author(s):

Kifayat U. Khan ◽

Cleber F.M. Mansano ◽

Thiago M.T. Nascimento ◽

André Z. Boaratti ◽

Andressa T. Rodrigues ◽

...

Keyword(s):

Amino Acid ◽

Essential Amino Acid ◽

Amino Acid Pattern ◽

Whole Body ◽

Piaractus Mesopotamicus ◽

Amino Acid Requirements

Download Full-text

The effect of altering dietary cystine and methionine levels at similar ratios to lysine on the requirements for sulphur amino acids in weaner pigs

Proceedings of the British Society of Animal Science ◽

10.1017/s0308229600028075 ◽

1995 ◽

Vol 1995 ◽

pp. 38-38

Author(s):

P.H. Simmins ◽

J.C. Bodin ◽

A. Kies ◽

P.E.V. Williams

Keyword(s):

Amino Acids ◽

Amino Acid ◽

Agricultural Research ◽

Protein Profile ◽

Efficient Production ◽

Sulphur Amino Acid ◽

Amino Acid Requirements ◽

Ideal Protein ◽

Sulphur Amino Acids ◽

The Ideal

The efficient production of the weaner pig requires accurate knowledge of its amino acid requirements. This is particularly relevant today as it is increasingly important to reduce nitrogenous waste from pigs. During the past decade formulations for feeds were based on the ideal protein profile of the lean tissue of pigs in which the sulphur amino acid requirements were assessed as the combination of total sulphur amino acids rather than through their individual amino acids, methionine and cystine (Agricultural Research Council, 1981). Today, this concept is challenged. The effect of the changing cystine demand in the weaner pig on the total ileal digestible sulphur amino acid (IDSAA) requirements and hence methionine levels requires study. The objective of this experiment was to understand the requirements and relationship between true ileal digestible cystine and methionine to lysine ratio in the ideal protein content of food to achieve efficient production in the young pig.

Download Full-text

Nutritional innovations on amino acids supplementation in Nile tilapia diets

Revista Brasileira de Zootecnia ◽

10.1590/s1516-35982010001300010 ◽

2010 ◽

Vol 39 (suppl spe) ◽

pp. 88-94 ◽

Cited By ~ 12

Author(s):

Wilson Massamitu Furuya ◽

Valéria Rossetto Barriviera Furuya

Keyword(s):

Amino Acids ◽

Amino Acid ◽

Environmental Sustainability ◽

Growth Efficiency ◽

Fish Growth ◽

Amino Acid Requirement ◽

Amino Acid Requirements ◽

Ideal Protein ◽

Fillet Yield ◽

Internal And External Factors

The optimal dietary supply of amino acids to tilapia has been studied for many years. Nevertheless, a general agreement on the amino acid requirement for tilapias has not been established. In order to optimize efficiency and reduce surplus nitrogen, values of digestibility of each amino acid of feed must be considered. Due to variations in the amino acid requirement due to new tilapia strains introduction, continuous research on amino acid requirements is necessary to elaborate economical and environmental sustainability diets, also improving fish growth, efficiency and fillet yield. The concept of ideal protein in tilapia diets was introduced more than ten years ago, and new researches have shown the importance of protein and amino acids on fish performance and health, when tilapias are submitted to constant challenging from internal and external factors.

Download Full-text