Сhemical composition, nutrient and energy content of feed biomass from triticale yargo and peas for different technologies of co-cultivation

Abstract

Aim. To establish indicators of chemical composition, nutrition and energy intensity of spring triticale and seed pea in single-species and compatible crops depending on the ratio of components and fertilizers. Methods. Field, laboratory, mathematical-statistical, analytical. Results. The results of studies on the chemical composition of fodder annual binary agrophytocenoses with the participation of triticale spring pea seed with different ratios of components and different fertilizers on black earth soils of the Forest Steppe, which were conducted annually during 2020–2022, are shown. Conclusions. The inclusion of spring peas in the leguminous-cereal mixture of triticale improves the chemical composition of the feed, increasing the content of crude protein in the dry weight of the feed from 12.9 to 14.8−16.3%, or by 1.9−3.4%. At the same time, the content of protein and crude fat in the dry mass increases, the digestibility of the dry mass in vitro − by 3−7%, the nutritional value according to the content of feed units, the energy intensity according to the content of exchangeable energy − the supply of one feed unit with digestible protein − from 83 to 112−128 g, raw ash − by 0.3−0.6%, calcium − by 0.06−0.10%, magnesium − by 0.01−0.06%, Ca:P ratio and the content of crude fiber decreases by 1.5−3.1%, potassium and the K:(Ca+Mg) ratio. With the introduction of humigran in the dry mass of triticale, pea and their compatible crops, the content of crude protein increases by 1.4−2.0%, protein – by 0.4−1.9%, and N45P45K45 − by 1.4−2,5% and 0.8−2.4%. Under the influence of these fertilizers, the content of crude fat, fodder units, exchangeable energy, supply of digestible protein, raw ash of the fodder unit in the dry weight of the forage simultaneously increases, and the content of non-nitrogenous extractive substances decreases in all grass stands.