Bioavailability of three rumen protected Methionine (Met) sources with different protection methods (Mepron M85, Evonik Industries, Germany; Methioplus, Soda Nutrition, Italy and Methilock, Tehrandaneh Co. Iran) were evaluated in 2 experiments with 6 canulated non-lactating Holstein cows. In experiment 1, the ruminal in situ and mobile bag techniques were used for assessing ruminal degradabilit...

Abstract Twenty (25%) isolates of Proteus Mirabilis were isolated from a total 80 samples patients suffering otitis media and urinary tract infections. The collected various hospitals in Al-Diwaniyah city between December 2021 March 2022. was identified using cultural biochemical tests. diagnosis confirmed by polymerase chain reaction (PCR) to investigate the 16s rRNA gene, DNA sequencing regis...

in this study, 32 multiparous non lactating holstein cows were used to investigate the effects of chromium-l-methionine (cr-met) supplementation and dietary energy source on production and nutrient digestibility during the periparturient period. cows were fed a total mixed ration from 28 days before anticipated calving through 28 days after calving. the study was designed as a randomized comple...

Cobalamin-dependent methionine synthase catalyzes the transfer of a methyl group from N5-methyltetrahydrofolate to homocysteine, producing tetrahydrofolate and methionine. Insufficient availability of cobalamin, or inhibition of methionine synthase by exposure to nitrous oxide, leads to diminished activity of this enzyme. In humans, severe inhibition of methionine synthase results in the develo...

A variety of methyl donor compounds, such as choline and betaine, are known to be sources of the methyl group of methionine when this compound is synthesized by animal tissues (du Vigneaud, 1952). However, none of the known transmethylation reactions has been shown to occur in the bacterial synthesis of methionine. In the first paper in this series (Shapiro, 1953) it was shown that thiomethylad...

In the present study, twenty-five male goat kids (20±2.5 kg BW) were used during an 84- day experimental period to determine the effect of source and level of sulfur supplementation on mohair characteristics and performance. Experimental diets were diets containing 0.18% (as control), 0.24% and 0.34% DM inorganic or organic sulfur. The data were analyzed as a 2 × 2 factorial design. Methionine ...

Effects of sodium selenite (SS) in offspring of broiler breeders has been reported, but the comparison between SS and different level of methionine on offspring has received limited, so this study was conducted to investigate sodium selenite and methionine effects on concentration of selenium in egg and serum of Iranian native broiler breeders. An experiment was conducted in 3 × 3 factorial exp...