ЗНАЧЕНИЕ КАЧЕСТВА ПРОТЕИНА КОРМОВЫХ БОБОВ В КОРМЛЕНИИ ЦЫПЛЯТ-БРОЙЛЕРОВ

Abstract

The article focuses on protein content and amino acid composition in different varieties of forage beans (Istok, Maria, Uzunovskie, Alfred), which are used in fodder of the farm poultry. Among them, there was studied a limiting factor - methionine, cysteine and lysine content. Portion of crude protein in the studied varieties of forage beans made between 24.7% (Alfred variety) - 27.9% (Maria variety), mean value made 26.3%. According to absolute portion of amino acids, Istok variety stands out among the rest. Amount of essential amino acids in crude protein is mean 44.32% with great instability of values: from 36.6 to 49.6%. The ratio of essential amino acids to nonessential amino acids (amino acid index) is an average of 0.53. Biological value of forage beans samples varied from 45.7% (Maria variety) to 52.8% (Istok variety), an average value made 49.9%. A comparative analysis of amino acid content of forage beans and eggs showed low biological value of forage beans due to the shortage of amino acids, particularly sulphur bearing ones: methionine and cysteine. Taking into account the fact that the better protein in the fodder meets the animals’ need in amino acids, the more of it is used to support vital functions of the organism, maximum fertility. In order to increase biological value of forage beans it is necessary to select varieties with greater content of essential amino acids, especially, limiting ones.