Biological Roles of Methionine and its Effect on Hatched Embryos and the Performance of Broiler: A Review Article

The development taking place in the growth of poultry birds has prompted researchers and specialists in the field of bird nutrition to search for solutions and food alternatives that are less expensive and with the same nutritional value to compensate the birds and balance their diets to meet the needs of mineral elements, vitamins and amino acids (protein). In view of the increasing demand for meat, this increase has been met with a steady increase. The use of manufactured feed additives and antibiotics had a negative impact on the growth of poultry, and some of them were deposited in the edible tissues of the bird. They were thus transmitted to the consumer, causing many diseases. Given the primary purpose of the additives, which is to balance all the elements involved in the composition of bird feed, I considered safe food additives such as liquid solutions and a group of vitamins, amino acids, and plant extracts, and since the primary return from most poultry projects is the economic return, the main goal was to focus on sources of amino acids as they are the basic unit for building protein, including the amino acid methionine as it is part of a group of amino acids called the determining factors in the composition of diets.