the effect of3levels of methionine (nrc recommended, 5 percent more than nrc recommended and 10 percent more than nrc recommended) and 2 levels of fat (0 and 5 percent) on some economical traits (performance and carcass) of broilers using a 2x3 factorial experiment with completely randomized design based on two rearing stages, starter (0-3 wk) and grower (4-6 wk) was studied. anova of the effec...

the aim of this study was to evaluate the effects of balancing low protein diets for methionine and lysine on performance of early lactation holstein cows under hot environmental temperature. twenty one multiparous holstein cows in early lactation were allocated to three experimental rations including, 1) high protein ration with 17.5% cp, 2) medium protein ration with 16% cp and 12 g/d rumen p...

The Cover Feature shows a metal nanoparticle modified with the amino acid L-methionine and adsorption of enzyme acetylcholinesterase (AChE) on methionine-capped surface. Methionine-capped Ag Au nanoparticles (NPs) were tested as inhibitors AChE, they showed moderate inhibitory potential toward AChE. NPs are much larger than molecules cannot enter active site gorge, so inhibition occurs by block...

this study was aimed to determine the effects of different dietary levels of methionine and protein on the growth performance and carcass characteristics of broiler chickens. a total of 240 broiler chicks were distributed into a completely randomized design with a 2 × 3 factorial arrangement. experimental factors were: two levels of protein (20% or 24% for starter and 18% or 22% for grower), an...

an in vivo experiment was conducted to determine the effect of dietary betaine supplementation (betafin®) as a replacement for methionine on broiler performance and carcass characteristics. in a completely randomized design (crd) with five treatments of betaine levels (at 0, 25, 50, 75, and 100% in replacement for methionine) and five replicates of 10 birds/replicate, two hundred fifty-day-...

L-methioninase degrades methionine, which is essential in methionine-dependent cancer cells, resulting specific cell death. Normal cells can synthesize their own methionine amino acids even the absence of exogenous methionine. This selective targeting makes a promising therapeutic candidate for cancer. In this study, was partially purified from Brevibacterium linens BL2. The activity enzyme fou...

The response of CR-39 nuclear track detector (TasTrak(®)) to protons in the energy range of 0.92-9.28 MeV has been studied. Previous studies of the CR-39 response to protons have been extended by examining the piece-to-piece variability in addition to the effects of etch time and etchant temperature; it is shown that the shape of the CR-39 response curve to protons can vary from piece-to-piece....

Methionine oxidation is used as a proxy to model the gamma radiation induced changes in single-use bags. These can be formation of acids, radicals and hydroperoxides due irradiation multilayer film single use bag made from. Biopharmaceutical polyethylene bags irradiated from 0 260 kGy aged 36 months were filled with methionine solution follow methionine. sulfoxide was measured using high perfor...

Glutamine synthetase, purified from rat liver, is homogeneous on acrylamide gel electrophoresis and on ultracentrifugation (~20,~) 15.0 S). The enzyme, which consists of eight subunits (subunit molecular weight, 44,000), resembles ovine brain glutamine synthetase in its physical properties, amino acid composition, and substrate specificity. Complete inhibition of the liver enzyme by methionine ...