Assessment of Chemical Composition of Grain Crops Depending on Vegetative Stage for Feeding

Abstract

The following grass: Brоmus inеrmis, Elytrígia bluish, Agropyron pectiniforme that are widely used in diets of ruminants were gathered and assessed for contents of Dry Matter (DM), Crude Protein (CP), ash, crude fat, Neutral Detergent Fibre (NDF), Acid Detergent Fibre (ADF), lignin, hemicellulose, Crude Fiber (CF), nitrogen-free substances. Samples of grain crops were assessed. The samples were taken within earing phase, flowering period, seeding in intact plant and in separate vegetative parts (n = 10). Dry matter regularly increases with developing vegetation phases. This index of smooth brome and wheatgrass has better balance in vegetative parts in earing and flowering phases during the assessment of their feed value. Mass weight of crude protein was in leaves and reproductive organs during all periods of plants development. At earing phase the highest content of it was registered. Higher content of crude fiber was registered in culm and leaves of smooth brome during earing phase. It was higher by 3.4-8.5%. The tendency for more intensive accumulation of crude fiber is observed rather well within seeding phase. Fiber content in culm of smooth brome was by 2.1-2.4% higher. Culm and leaves of wheatgrass in its turn have the highest content of nitrogen-free substances. With growth and development of crop neutral detergent fiber increases from 49.4% (in earing phase) up to 64.1% (in seeding phase) acid detergent fiber increased by 8.2-11.4% and hemicellulose and cellulose -by 0.7-4.4%. Concentration of metabolizable energy in 1 kg dry matter decreases by 17.3-19.7% in the process of physiological maturation of grain crops for feeding. Maximum content of structural carbohydrates was observed in culm part of grain crops, minimum content-in leaves and generative parts of plants had intermediate position. Thus, type of feed crop, phase of its development determine mainly chemical composition and content of carbohydrate fractions not only in whole grain crops but also in vegetative parts. It can further influence on preparation technology and fodder quality.

Reatment of wastewater from intensive striped catfish farming using Hymenachne acutigluma in batch surface-constructed wetland

“…The crude protein, total minerals, NDF, ADF, and hemicellulose in the grass tissues are required for ruminants. These contents in the two growth phases were similar (Table 3), and components, such as the NDF and ADF, were not statistically different from the components of other common herbage used for cattle diets found in a previous study [25].…”

Information Technologies for Determination the Optimal Period of Preparing Fodder From Perennial Grasses

“…Analysis methods are standardised at the international and interstate levels (GOST ISO 13906-2013, 2013; GOST ISO 16472-2014, 2014). In Russian Federation, some forages and forage grasses were also examined by the level of acid-detergent fiber (ADF) and NDF in the conditions of the Moscow, Kaluga, and Orenburg regions (Vorobyova, 2002;Kharitonov et al, 2008;Levakhin et al, 2015) and Tatarstan (Bykova and Gibadullina, 2010), studies were carried out to study the digestion in bull calves (Levakhin et al, 2007;Bykova and Gibadullina, 2010) and cows (Kharitonov and Khotmirova, 2009) depending on the content of structural carbohydrates in the diet. However, there is still insufficient information on the levels of ADF and NDF in different types of forage grasses, depending on the phase of vegetation and other conditions.…”

Assessment of Contents of Structural Carbohydrates and Lignin of Perennial Fodder Herbages Depending on Vegetative Stage Growth

“…Since the end of the last century, the evaluation of feed and rations for the content of detergent forms of fibre in them has become widespread throughout the world. In the Russian Federation, some forages and forage grasses were also studied by the level of ADF and NDF, for example, in the conditions of the Moscow, Kaluga and Orenburg regions (Vorobyova, 2002;Kharitonov et al, 2008;Levakhin et al, 2015) and Tatarstan, studies have been conducted on digestion in bull calves and cows depending on the content of structural carbohydrates in the diet. The content of NDF in feed tables is also given (Kirilov, 2009).…”