the clinical uses of gentamicin have so far been restricted due to nephrotoxicity and ototoxicity. the exact mechanism of nephrotoxicity is still unknown; however, it appears that free radicals may be involved. methionine has previously been shown to alleviate oxidative stress involved in ototoxicity due to its antioxidant properties. therefore, the effect of methionine supplementation on the g...

an experiment was conducted to determine the appropriate methionine level in broiler breeder’s diet. the treatments consisted of 6 levels of methionine (0.2, 0.25, 0.3, 0.35, 0.4 and 0.45% diets), with 4 replicates of 7 hens each for a duration of 8 weeks and for ages of 28 to 35 weeks. diets contained similar levels of protein metabolizable energy. the levels of the other amino acids were take...

The effects of chromium methionine supplementation on performance and serummetaboliteswere evaluated in broiler chickens.Two experiments were conducted at22 oC, thermoneutral, (TN) and33±2 oC, heat stressed (HS) conditions. Two hundred and eighty eight male broiler chicks (Ross 308) were allocated to four treatments in a completely randomized design. Treatments with 0 (control), 200, 400 or 800...

background:herbal methionine can be compared relative todl-methionine with evaluation of bioavailability of this source ofmethionine. objectives: an experiment was carried out todetermine the relative bioefficacy of herbal methionine (h-met)®relative to dl-methionine (dl-met) on performance criteria andimmunocompetence of met sources in male broilers. atotal of 160male broilers were fed a met-d...

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-...