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...

Zinc (Zn) as a micro mineral is essential for growth, skeletal development, and immune competence in chickens (Hudson et al., 2004). Inorganic Zn salts, such as sulphate and oxide, are generally supplemented in diets to meet the Zn requirement of chickens (Cao et al., 2002). However, in the recent past Inorganic trace minerals (ITMs) have been replaced by organic trace minerals (OTMs) because o...

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...

Cobb 500 broilers were fed diets that were zinc deficient (35ppm), supplemented with 70ppm zinc sulfate, or 70ppm zinc sulfate + 35ppm organic zinc (MINTREXTM Zn or zincmethionine). Half the birds were given a coccidiosis vaccine (ADVENT® coccidiosis control) at day of age, and challenged with all three species on day 24. MINTREX Zn and zinc-methionine both significantly increased intestinal br...

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...