Dr. Behnam Saremi

I. IntroductionGuanidino acetic acid (GAA) is a naturally occurring metabolite which is synthesized in the kidney by L-arginine-glycine amidinotransferase (AGAT) using glycine and arginine (Arg) as substrate (Brosnan et al. 2009). Then, GAA is methylated to creatine in the liver using GAA N-methyltransferase (GAMT). Feeding GAA to humans and animals increases creatine in blood and muscle tissues ( ...

I. IntroductionMethionine plus Cysteine (Cys) requirement of poultry and swine has been determined using graded levels of DL-Met. Currently, Aviagen recommends 0.95, 0.87, and 0.83% SID Met plus Cys for starter, grower, and finisher phases of Ross 308 broilers (Aviagen, 2019). Cobb recommends 0.88, 0.80, and 0.74% SID Met plus Cys for the respective growth phases (Cobb, 2018). Similarly, Brazilian ...

INTRODUCTIONThe suggested BW of broilers (ROSS 308) will increase 50- to 55-fold at the age of 35 d as compared with the day-old chick weight (Aviagen, 2019a). Correct supplementation of dietary amino acids is crucial to support the exponential growth of broilers. Methionine (Met) is the first limiting amino acid in broilers; thus, meeting the requirements of Met plus cystine is crucial.The inclus ...