Mineral elements in feed and methods for their analysis

Abstract

The book outlines the influence of many factors (soil type of growth of forage plants, type of forage plants, the use of fertilizers, climatic conditions) on the content of mineral elements in forage plants and feed. For each macronutrient (calcium, phosphorus, potassium, sodium, chlorine, magnesium, sulfur) and trace element (cobalt, iodine, manganese, zinc, iron, copper), considered as important for feeding animals, the content and transformations of the element in soils are outlined availability of plant forms. The physiological role of this element in plants, its concentration depending on the soil and climatic conditions is considered. For each element, its average content in well-known forage means is given, as well as standards for the concentration of toxic elements. The requirements of farm animals in mineral elements, their influence on each other are also considered. There is a great importance of taking into account the level of mineral elements in the preparation of rations, for which it is necessary to perform laboratory tests, and therefore sets out methods for their determination in the feed. At the same time, special attention is paid to such modern high-performance and precise methods as atomic absorption, with various atomizers and with inductively coupled plasma. The book contains a lot of reference data. It will be very useful for researchers and professionals, especially beginners, in the field of feed production and feed use, students who will get a holistic view of the mineral substances of soil, plants and animals.