scholarly journals Dependence of the buffer capacity on the chemical composition of dry matter of alfalfa

2021 ◽  
Vol 901 (1) ◽  
pp. 012044
Author(s):  
G V Stepanova ◽  
M V Volovik
Keyword(s):  
Chemical Composition ◽  
Mineral Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Buffer Capacity ◽  
Crude Fiber ◽  
Soluble Carbohydrates ◽  
Flowering Phase ◽  
High Forage ◽  
Main Influence

Annotation It is shown that the buffer capacity of dry matter of alfalfa of the first cut in the flowering phase is 5.66-5.94 mol / liter. With an increase in the content of crude protein and crude ash by 1%, it increases by 0.14-0.40 and 0.49-0.86 mol / liter, respectively, with an increase in the content of soluble carbohydrates by 1%, it decreases by 1.44 mol / liter … The dry matter of the second cut alfalfa has a high forage quality. The content of crude protein from the stemming-beginning of budding phase to the flowering phase is in the range of 23.44-20.20%, crude ash 9.24-8.10%, while the content of crude fiber is reduced to 22.92-29.01%, dry matter - up to 20.84-26.00%. The buffer capacity of dry matter reaches 9.69-7.23 mol / liter. The main influence on the buffer capacity is exerted by the mineral composition of the dry matter. An increase in the content of crude ash by 1% increases the buffer capacity of dry matter by 0.55 ± 0.16 - 1.36 ± 0.14 mol / l, an increase in the content of crude protein by 1% increases the buffer capacity by 0.15 ± 0.06 - 0.39 ± 0.14 mol / liter.

Research on Chemical Composition and Nutritive Value of Green Fodder Used in Ecological Production of Eggs for Consumption

2018 ◽  
Vol 69 (3) ◽  
pp. 682-687
Author(s):  
Gherasim Nacu ◽  
Maria Bologa ◽  
Cecilia Pop ◽  
Paul Corneliu Boisteanu ◽  
Daniel Simeanu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Quality Parameters ◽  
Organic Production ◽  
Crude Fiber ◽  
Important Condition ◽  
Nitrogen Free Extract ◽  
Green Fodder

The aim of this paper is to study the chemical composition of a green fodder used in laying hens feeding raised in ecological system; organic fodder being an important condition to obtain organic eggs for consumption. In order to evaluate the chemical composition variations of the green fodder throughout the year, there were taken plants samples in three different vegetation stages (May, September and October). To each period, were done 5 determinations for the following indicators: dry matter - DM (%), ash - Ash (%), crude protein - CP (%), ether extract - EE (%), crude fiber -CF(%), nitrogen free extract - (NFE%) calcium � Ca(%), phosphorus - P(%), magnesium - Mg (%), natrium -Na(%). And also, were analyzed the relevant indexes for the organic production: lead -Pb (mg/kg DM), cadmium - Cd (mg/kg DM), cooper -Cu (mg/kg DM), zinc - Zn (mg/kg DM) nitrites (ppm), nitrates (ppm), pesticides. After analysis, it was noticed that dry matter, minerals, organic matter and protein content varied very significantly between the first period and the third (p �0.001), while the fat content, crude fiber and nitrogen free extract did not register significant differences (p �0.05). Regarding the minerals elements analyzed, P and Mg differed significantly distinctly between the first and the last analyzed period. The content of green fodder in Pb, Cd, Cu and Zn was below the limits allowed by current legislation. The analyses for pesticides have highlighted the lack of them in the fodder. The quality parameters of the analyzed green fodder, expressed through levels of pollutants such as heavy metals, nitrites, nitrates, pesticides, allow us to notify that the green fodders achieve the conditions necessary for organic production.

scholarly journals Influence of weather conditions on chemical composition of dry matter of alfalfa (Medicago varia Mart.) in the flowering phase

2019 ◽  
Vol 2019 (2) ◽  
pp. 26-39
Author(s):  
Галина Степанова ◽  
Galina Stepanova
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Weather Conditions ◽  
High Heat ◽  
Crude Fiber ◽  
Winter Period ◽  
Flowering Phase ◽  
Cloudy Weather ◽  
Heat And Moisture

The influence of weather conditions in the autumn-winter period and in the growing season on the content of crude protein, crude fiber and crude fat in the dry matter of alfalfa (Medicago varia Mart.) in the flowering phase has been studied. It was found that if during the formation of alfalfa herbage weather conditions were such to the average annual, the content of crude protein was 17.1–20.6%, crude fiber 24.5–28.6% and crude fat 2.4–3.3 percent. In conditions of sufficient moisture supply, increased heat supply and the predominance of Sunny days, the protein content reached to 18.9–24.8%, fiber was 19.0–23.0%, fat was 1.7–2.4 percent. With high heat and moisture with a predominance of cloudy weather, the protein content decreased to 15.0–17.7%, fiber increased to 35.4–39.3%, fat – to 2.6–3.5 percent. It was found that excessively wet weather in the autumn-winter period of the previous year significantly weakens alfalfa plants. Therefore, the beginning of spring regrowth, even in warm weather in April, was delayed for 1–2 weeks. The intensity of growth and development of alfalfa in May–June, even with optimal heat and moisture, was slow. The entry of alfalfa into the flowering phase was late by an average of 2 weeks compared to normal dates. At the same time, the content of crude protein decreases to 12.4–15.0%, the content of crude fiber increases to 32.1–34.4%, and the content of crude fat (2.4–2.9%) was not affected by unfavorable wintering conditions. It was found that the relatively high quality of dry matter in the flowering phase (average for 4 years of use) have varieties Vega 87 and Taisia (protein content of 18.3 and 19.5%, fiber 29.3 and 29.2%, fat 2.7 and 3.0%). Performance of alfalfa varieties to Pastbishchnaya 88 and Selena was a 15.9%, 30.9%, 2.3% and 17.3%, 28.8 %, 2.7%, respectively.

scholarly journals Cultivation of Pleurotus ostreatus (Jacq .: Fr.) Kummer on pear pomace: Evaluation of productivity and chemical composition of the biodegraded substrate

2018 ◽  
pp. 21-30
Author(s):  
Gustavo Enrique Rodríguez ◽  
Daniel Alfredo Martínez ◽  
María Belén Buglione ◽  
Marcela Viviana Filippi ◽  
Marta Susana Agüero
Keyword(s):  
Chemical Composition ◽  
Pleurotus Ostreatus ◽  
Crude Protein ◽  
Dry Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Biological Efficiency ◽  
Soluble Carbohydrates ◽  
Crude Protein Content ◽  
Commercial Cultivation

El objetivo de este trabajo fue evaluar la factibilidad de emplear orujo de pera como sustrato para el cultivo comercial de dos cepas de Pleurotus ostreatus (Pl-P y Pl-J) y analizar la variación de la composición química del orujo biodegradado. La cepa Pl-J presentó 98,3% de Eficiencia Biológica, 35% de Rendimiento y 45 días de Período Productivo, mientras que para Pl-P los valores fueron 62,3%, 21,8% y 35 días, respectivamente. La actividad metabólica de ambas cepas sobre el sustrato provocó una disminución relativa del contenido de materia seca y materia orgánica del 20 al 30% y de un 60% para los carbohidratos solubles. Al finalizar el Período Productivo, las fibras (FDN, FDA y LDA) disminuyeron 10 a 20% mientras que el contenido de proteína bruta no se modificó significativamente. The aim of this work was to evaluate the feasibility of using pear pomace as a substrate for the commercial cultivation of two strains of Pleurotus ostreatus (Pl-P and Pl-J) and to analyze the variation of the chemical composition of the biodegraded pomace. The Pl-J strain presented 98,3% of Biological Efficiency, 35% of Yield and 45 days of Productive Period, while for Pl-P the values were 62,3%, 21,8% and 35 days respectively. The metabolic activity of both strains on the substrate led to a relative decrease in dry matter and organic matter content of 20 to 30%, and 60% for soluble carbohydrates. At the end of the Productive Period, the fibers (FDN, FDA and LDA) decreased 10 to 20% while the crude protein content was not significantly modified.

BUFFER CAPACITY OF ALFALFA DRY MATTER

2021 ◽  
Author(s):  
Galina Stepanova
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Buffer Capacity ◽  
Soluble Sugars ◽  
Crude Fiber ◽  
Feed Value ◽  
Alfalfa Varieties

It was found that with an increase in the content of crude fiber, dry matter and soluble sugars by 1%, the buffer capacity of alfalfa dry matter decreases by 0.04–0.10, 0.09–0.19 and 0.16–1.44 mol/l, respectively. An increase in the content of crude protein, crude ash and crude fat by 1 % increases the buffer capacity of dry matter by 0.07–0.40, 0.19–86 and 0.33–1.11 mol/l, respectively. Therefore, to create alfalfa varieties with a reduced buffer capacity without appreciable damage to the feed value, it is necessary to conduct breeding to increase the content of soluble sugars and, possibly, reduce the content of raw fat.

scholarly journals Conservation and chemical composition of Leucaena Leucocephala plus fresh or wilted Pennisetum purpureum mixed silages

2015 ◽  
pp. 4895-4906 ◽  
Author(s):  
Ángel Santana P ◽  
Mario Cisneros L ◽  
Yordan Martínez A ◽  
Yoandris Pascual S
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Ammonia Nitrogen ◽  
Pennisetum Purpureum ◽  
Crude Fiber ◽  
Randomized Design ◽  
Before And After ◽  
Positive Effect ◽  
Better Than

ABSTRACTObjective. Quantify the effects of mixing Leucaena (L) with King grass forage, fresh (K) or wilted (Kp), on the fermentation process and chemical composition of mixed silages. Materials and methods. Silos were produced mixing several proportions (kg:kg) K:L and Kp:L (100:0; 75:25; 60:40; 50:50; 40:60 and 0:100) of both types of plants, under a completely randomized design of four replications. The quantity of organic acids (butyric, acetic, lactic), pH, ammonia nitrogen percent and some of the typical bromatologic nutrients of the forage before and after ensiling were measured. The treatment effects were evaluated through variance and regression analysis. Results. The results clearly proved the differences (p<0.05) between King grass and Leucaena which promote its mixing and wilting: better legume contents of crude protein (24 vs. 7%), dry matter (33.77 vs. 22.05%) and crude fiber (26.53 vs. 32.5%). Clear benefits on the conservation process of mixed silages were also measured: higher lactic productions and less butyric, acceptable pH (4.02-4.8) and protein degradation (<8%). In addition, a positive effect on the chemical composition of the aforementioned silages was quantified (crude protein, dry matter and crude fiber progressive improvement). Conclusions. Mixed K+L silages are better than pure K if L is included below 25% in KL and up to 40% when K has been wilted. Higher inclusions of L will worsen the conservation process and will limit its elaboration.

CHEMICAL COMPOSITION OF DIPLOID AUTOTETRAPLOID BARLEY VARIETIES

1963 ◽  
Vol 43 (1) ◽  
pp. 23-29 ◽  
Author(s):  
F. W. Sosulski ◽  
E. N. Larter
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Mineral Content ◽  
Crude Fiber ◽  
Stages Of Growth ◽  
Nitrogen Free Extract ◽  
Calcium Phosphorus ◽  
Feeding Value ◽  
Diastatic Activity

Although the forages from six autotetraploid barley varieties harvested at the 5-leaf and mature stages of growth contained slightly more crude protein, their feeding value appeared inferior to diploid barley forages because of a lower dry matter and mineral content. Autotetraploid seeds exceeded the diploids by about one-third in percentage of crude protein, crude fiber, potassium, calcium, phosphorus and magnesium but were lower in moisture and nitrogen-free extract. A greater proportion of hulls was a contributing factor in the higher crude fiber and ash content of the autotetraploids. On the basis of their chemical composition, the autotetraploid seeds would make excellent livestock feeds.Prediction tests indicated that, in spite of the large seed and exceptionally high diastatic activity in the autotetraploids, their yield of barley extract would be too low for malting purposes.

scholarly journals Determination of Chemical Composition of Maize by Destructive and Non-Destructive Method

2010 ◽  
Vol 67 (1) ◽  
Author(s):  
Laura Monica DALE ◽  
Ioan ROTAR ◽  
Roxana VIDICAN ◽  
Adriana MOREA ◽  
Alin MOGOS
Keyword(s):  
Chemical Composition ◽  
Calibration Curve ◽  
Crude Protein ◽  
Dry Matter ◽  
Quantitative Methods ◽  
Near Infrared ◽  
Chemical Properties ◽  
Crude Fiber ◽  
Infrared Spectrometry ◽  
Extractive Substances

Using NIRS technique is an elegant and very precise, this technique become more frequently used for determining physico-chemical properties of feed, especially chemical composition (dry matter, protein, ash, fiber, fat, non-nitrogenous extractive substances. The contents of dry matter, crude protein, crude ash, crude fiber, crude fat, non – nitrogenous extractive substances of maize are determined by destructive methods and then using them was build the calibration curve for NIRS with which we will determine all the chemical properties of the material using prediction. This paper aims to highlight a way of direct analysis method undestructive of crude protein, crude fat, crude fiber, crude ash, non-nitrogenous extractive substances using near infrared spectrometry technique in conjunction with reflected attenuated total. For each property we have used these method assessment: for the crude protein was used Kjeldahl method, for crude fat was used Soxhlet method, for crude ash performed Hennenberg – Stohmann method, for crude fiber was used Hennenberg - Stohmann method and for non – nitrogenous extractive substances was used mathematical calculation. All these results determined by the classical method, the destructive method, were used to build the calibration curve for device FT-NIR Spectrometer Perkin Elmer Spectrum 100 N with accessory N NIRA. Mathematical model was built using the near infrared spectrofotoscopiei technique in conjunction with multivariable calibration techniques using the Perkin Elmer program Spectrum Quant + 4.60. The method provides a rapid and reliable alternative to traditional quantitative methods for determining which usually requires several hours to complete.

scholarly journals Productivity of Forages in Grassland Merapi Post-Eruption Area, Sleman, Yogyakarta, Indonesia

2015 ◽  
Vol 17 (2) ◽  
pp. 97
Author(s):  
Nafiatul Umami ◽  
Bambang Suhartanto ◽  
Bambang Suwignyo ◽  
Nilo Suseno ◽  
Sarah Adrian Fenila ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Crude Fiber ◽  
Dry Matter Production ◽  
Botanical Composition ◽  
Matter Production ◽  
Line Intercept

This research aimed to investigate the productivity and quality of forages (including dry matter, organic matter, crude fiber, crude protein, and extract ether) in the area of Kali Kuning and Krasak River. This area was affected by Mount Merapi Eruption on 2010. The data were taken from the area around the river due to the area was found to be firstly revegetated after the eruption. The Forage classified as grass, legume and forbs. The method applied in the research was Line Intercept method which was done by seeing the botanical composition there and was performed at several observation points. The forage was taken as the sample and then calculated its production and proximately analyzed to determine its chemical composition. The results showed that around the river, the widest cover area in 2013 and 2014 was Brachiariabrizantha grasses. The largest dry matter production in 2013 was Pennisetumpurpuphoides as much as 165.57 g m–2, while in 2014 the largest production of DM was Brachiariabrizantha as much as 190.37 g m–2. Frobs with another type of weed also spread in this area. The Quality of forages around Krasak River increased in 2014 due to the addition of organic matter contained in the soil and the minerals weathering from year to year.

The assessment of herbage legume varieties. II. In vitro digestibility, water soluble carbohydrate, crude protein and mineral content of primary growth of clover and lucerne

1966 ◽  
Vol 66 (3) ◽  
pp. 351-357 ◽  
Author(s):  
W. Ellis Davies ◽  
G. ap Griffith ◽  
A. Ellington
Keyword(s):  
White Clover ◽  
Crude Protein ◽  
Dry Matter ◽  
Red Clover ◽  
Water Soluble ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
In Vitro Digestibility ◽  
Primary Growth

The primary growth of eight varieties of three species–white clover (3), red clover (4) and lucerne (1)–was sampled at fortnightly intervals and the percentage dry matter, in vitro digestibility, crude protein, water soluble carbohydrates, P, Ca, K, Na and Mg were determined.Differences between species were nearly always significant and the general order of merit was white clover, red clover and lucerne. The exceptions were for dry-matter percentage where this order was reversed, and red clover had the lowest Na and highest Mg content.

scholarly journals Forage yield and nutritive value of hay from sorghum-sudangrass hybrids

2020 ◽  
Vol 9 (11) ◽  
pp. e95991110508
Author(s):  
Hosnerson Renan de Oliveira Santos ◽  
Mauro Pereira de Figueiredo ◽  
Ingrid Thalia Prado de Castro ◽  
Mário Henrique Melo e Lima ◽  
Luiza Maria Gigante Nascimento ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Forage Yield ◽  
Neutral Detergent Fiber ◽  
Mineral Matter ◽  
Matter Production ◽  
Green Matter ◽  
Sorghum Sudangrass ◽  
High Forage

The objective was to evaluate agronomically nine sorghum-sudangrass hybrids (Sorghum bicolor × Sorghum sudanense) and the nutritive value of their respective hays. The experimental design used was randomized blocks in a 3 × 9 factorial scheme, with three replications. Three cuts were made: 42 days after germination, 29 days after regrowth, and 28 days after the second regrowth. All hybrids showed a higher number of plants ha–1 (P < 0.05) in the second cut. For the green matter and dry matter production of the hays, the values ranged from 49.16 to 62.07 t ha–1 and 9.07 to 11.43 t ha–1, respectively. There were no differences (P > 0.05) in dry matter, mineral matter, or ether extract. The hybrids 1013020, BRS 810, 1013016, and 1624F016 showed higher values of crude protein (CP) of 16.49, 16.17, 16.08, and 15.88%, respectively. Differences were observed (P < 0.05) in neutral detergent fiber (NDF) content. The hybrids 1013020, BRS 802, 1013021, 1013016, BRS 810, and 1624F006 presented lower levels of NDF (60.57, 60.74, 62.15, 62.37, 62.58, and 64.70%, respectively). The hybrids BRS 802, 1013016, BRS 810, and 1624F006, stood out above the others, presenting high forage yield and adequate nutritive value (CP content >13% and NDF content <65%).

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