title: Relation of soya bean meal level to the concentration of plasma free amino acids and body growth in white rats.
abstract: Amino acid (AA) levels in plasma and body growth were determined in rats (n20) fed diets with different soya bean meal levels. Free AA in plasma was determined by reversed-phase high-pressure liquid chromatography. We have used four levels of protein diets like 8%, 15%, 23% and 35% in this trial. Rats which were fed the low-protein (8%) diet with low percentage of soya bean meal were found to be growth-retarded. The body weight gain of high protein group (35%) was lower than that of the 23% groups. In the rats fed with the low-soya bean meal diet, some nonessential AA (NEAA) in plasma like asparagine, aspartic acid, cysteine, glutamic acid and serine increased, whereas the essential AA (EAA), with the exception of arginine, methionine and valine decreased. Here, plasma EAA-to-NEAA ratios were not correlated to growth and experimental diet. We hypothesize that AA metabolism is associated to changes in growth in rats on different protein intake. This study has showed the sensitivity of body mass gain, feed intake, feed conversion rate of rats to four levels of protein in the diet under controlled experimental conditions.
authors.affiliation: D.A.-V.P.G. College, Department of Zoology, CSJM University, Kanpur, India. tps.mndl@gmail.com
authors.forename: Tapas K
authors.initials: TK
authors.lastname: Mandal
authors.forename: Nargish
authors.initials: N
authors.lastname: Parvin
authors.forename: Santanu
authors.initials: S
authors.lastname: Mondal
authors.forename: Vijaylaxmi
authors.initials: V
authors.lastname: Saxena
authors.forename: Ashok K
authors.initials: AK
authors.lastname: Saxena
authors.forename: Sabyasachi
authors.initials: S
authors.lastname: Sarkar
authors.forename: Mitali
authors.initials: M
authors.lastname: Saha
mesh_terms: D000596:Amino Acids / Q000097:blood*; D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D005260:Female; D008297:Male; D051381:Rats; D013025:Glycine max; D015430:Weight Gain
chemical_list: D000596:Amino Acids