State Stende Cereals Breeding Institute

Stende, Latvia

State Stende Cereals Breeding Institute

Stende, Latvia

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Strazdina V.,Institute of Food Safety | Sterna V.,State Stende Cereals Breeding Institute | Jemeljanovs A.,Latvia University of Agriculture | Jansons I.,Institute of Food Safety | Ikauniece D.,Institute of Food Safety
Agronomy Research | Year: 2015

There is a high interest on the part of consumers to obtain meat from animals which have been reared as close to natural conditions as possible. Game meat, characterised by high nutritional value and specific organoleptic qualities, complies also to this claim. Game animals, including beaver, meat provide an excellent investment, diversification of many consumer meals. The meat of wild animals is more favourable for human health because it has lower saturated fatty acids. Investigations about biochemical composition of beaver meat are not very common worldwide. The aim of study was evaluate biochemical composition of beaver meat hunted in Latvia. Therefore protein, amino acids, fat, ash, cholesterol content and fatty acid composition of beaver meat samples were done. Conclusion was made that beaver meat samples protein content was 20.07–22.68% and fat content 3.31–5.27%. The sum of essential amino acids in beaver meet samples was determined from 0.99 mg 100 g-1, less than other game meat. While the content of polyunsaturated fatty acids in meat samples of beaver (42.54%) was significantly higher than content of saturated (26.80%) or monounsaturated (27.42%) fatty acids. Ratio of polyunsaturated fatty acids n–6 : n–3 in beaver meat samples were 1.26, PUFA : SFA in beaver meat samples were 1.60 and cholesterol content 49.51 mg 100 g-1 was lower in comparison of domestic or wild animals meat. From this point of view beaver meat is very healthy source of fat. © 2015, Eesti Pollumajandusulikool. All rights reserved.


Antone U.,Latvia University of Agriculture | Antone U.,Latvian Institute of Organic Synthesis | Zagorska J.,Latvia University of Agriculture | Zagorska J.,State Stende Cereals Breeding Institute | And 6 more authors.
Agronomy Research | Year: 2015

Fat-soluble constituents of milk – β-carotene and α-tocopherol – are essential for quality and nutritional value of milk and dairy products. Provision of fat-soluble antioxidants and vitamins such as carotenoids and vitamin E necessary for cow organism and milk synthesis depends on their concentration in fodder. The aim of this study was to estimate the effect of cow feed supplementation by carrots on the total carotene concentration in cow blood serum, on fat, protein, lactose concentration in milk, and milk yield, as well as to investigate the effects on β- carotene and α-tocopherol concentration in butter oil and intensity of its yellow colour. A total 20 cows of Latvian brown (n = 8) and Danish red (n = 12) breed were divided into control (CG) and experimental group (EG). In the EG, cow feed was supplemented with seven kg of carrots per cow per day for six weeks at the end of the indoor period (March–May). Milk samples from indoor period (n = 100) and grazing (n = 20) were used for butter oil extraction. The carotene concentration observed in blood of animals before the experiment was insufficient taking into account that the recommended β-carotene concentration in serum is above 3.0 mg l-1 level. During indoor period the increase in carotene concentration in blood of cows was significant in both groups (P < 0.05) but in EG it was more eplicit showing the positive effect of carrot supplementation. Carrot supplementation did not change milk fat, protein, lactose concentration, and yield (P > 0.05). At the same time it contributed in more stable β-carotene, as well as 30% higher α-tocopherol concentration and more intense yellow colour of butter oil samples during the indoor period of the experiment (P <0.05). © 2015, Eesti Pollumajandusulikool. All rights reserved.


Vojevoda L.,Latvia University of Agriculture | Vojevoda L.,State Stende Cereals Breeding Institute | Gaile Z.,Latvia University of Agriculture
Research for Rural Development | Year: 2012

Products of organic origin used in agriculture to reduce the application of artificial pesticides and fertilizers are investigated world-wide now. Composting organic fertilizers, plant residue and household waste results in new products of organic origin. In several countries (USA, Russia, Belorussia, and some others), the role of earthworms in organic waste processing and the possible further use of this processed product have been investigated. In Latvia, similar investigations are few but they are needed. A goal of our investigation was to investigate the impact of extracts made from the products of organic origin on potato (Solanum tuberosum) tuber yield in biological crop production system. A field experiment was established at the State Stende Cereals Breeding Institute in 2011, using an early-maturing potato variety 'Borodjanskij Rozovij' suitable for growing both in conventional and organic production systems. Tubers or plants were treated with peat elixir and earthworm biohumus extract obtained at different temperatures: +45 °C and +95 °C, and their mixtures. In total, 18 treatments and untreated control variant were included in the experiment. Tubers were treated just prior to planting, but potato plants were treated three times in season. In the first production year, the obtained potato tuber yield ranged 26.16-45.38 t ha-1 in treated plots, and 35.27 t ha-1 in untreated control plot. Data were subjected to analysis of variance. In 2011, tuber yield was significantly dependent on organic extracts applied, which increased the yield significantly (p<0.05) in four treatments, but in the rest of them significantly decreased if compared to control.


Jansone I.,Latvia University of Agriculture | Jansone I.,State Stende Cereals Breeding Institute | Gaile Z.,Latvia University of Agriculture
Research for Rural Development | Year: 2012

Biogas can be produced from industrial by-products, household waste and raw materials of agricultural origin. Agricultural resources can be agricultural by-products, for example, manure as well as biomass of energy crops. The objective of the trial was to evaluate the methane outcome from the winter wheat (Triticum aestivum L.) silage depending on the variety and the growth stage during the harvest. The trial was carried out in State Stende Cereals Breeding Institute in the autumn of 2009. The biomass of three varieties of winter wheat, harvested at three stages of maturity - at the beginning of flowering (GS 60-62), early milk ripeness (GS 70-72), and early yellow ripeness (GS 80-82) - was ensiled in laboratory conditions. The silage was analysed 180 days after it had been ensiled. The biogas and methane outcome in laboratory conditions (in Germany) was determined for samples of silage made from winter wheat variety 'Skalmeje' at all harvesting times according to VDI 4630 method. The theoretically obtainable methane outcome was calculated for silage samples of all varieties by using the results of chemical composition analysis (crude protein, crude fibre, crude fat, N-free-extracts). The highest methane outcome from one ton of winter wheat silage was acquired by harvesting and ensiling the biomass during the flowering stage. However, evaluating the methane yield from one hectare, the best results were obtained by harvesting and ensiling the biomass at the early milk stage of ripeness and at the stage of early yellow ripeness.


Jansone I.,Latvia University of Agriculture | Jansone I.,State Stende Cereals Breeding Institute | Gaile Z.,Latvia University of Agriculture
Research for Rural Development | Year: 2013

Bioethanol can be used for food production and to partially replace fossil fuel. Bioethanol is mainly produced from renewable biomass that contains sugars, starch or lignocellulose. The main raw materials for production of bioethanol are cereals, maize (Zea mays), sugarbeets (Beta vulgaris sacccharifera) and other plant species. During the trial that took place in State Stende Cereals Breeding Institute during a three year period (from 2009/2010 to 2011/2012) we examined the suitability of grain from winter wheat (Triticum aestivum L.), triticale (×Triticosecale Wittm) and rye (Secale cereale L.) for the production of bioethanol. Three varieties of each species were used in the trial. During the trial period the grain yield, the ethanol outcome (L t-1) and the ethanol yield (L ha-1) were determined. It was established that during three years wheat and triticale provided the highest starch content (more than 700 g kg-1) of the grain as well as the highest ethanol outcome (L t-1). These species provided both high grain yield (more than 9 t ha-1 on average) and the highest ethanol yield (3300 - 4665 L ha-1). The choice of variety was also important as both the grain starch content and the grain yield depend on the genotype of the variety.


Brunava L.,Latvia University of Agriculture | Brunava L.,State Stende Cereals Breeding Institute | Alsina I.,Latvia University of Agriculture
Research for Rural Development | Year: 2013

Oat breeders have improved yielding ability potential of oat (Avena sativa L.) cultivars, but set lower standards for biochemical composition of grain. Nowadays the quality of grain for consumers has become important especially in terms of lipids and β-glucan content. Experiments were carried out at State Stende Cereal Breading Institute in the year 2012 to evaluate the oats yield and grain quality. 15 different cultivars of Stende collection were compared by yield and parameters of productivity (test weight and 1000 kernel weight) as well as biochemical parameters (protein, starch, lipid, β-glucan, content). Biochemical parameters were tested by Infratec Analyser 1241. To obtain an equal research background all cultivars were grown in a plant breeding crop rotation field, with similar growing conditions (sowing-time, fertilizer, plant protection activities), which agree with generally accepted technology of oat cultivation in Latvia. Experiments were done in four replications. Plots were laid randomized. ANOVA procedures were used for data analysis. Yield of experimental cultivars varied between 4.28 ± 0.19 - 5.93 ± 0.22 t ha-1, test weight 46.85 ± 0.99 - 52.75 ± 0.44 kg hL-1, 1000 kernel weight 33.70 ± 0.24 - 46.34 ± 0.80 g. Significant differences of tested yield parameters among oat cultivars were observed. The highest protein content was observed for local breed cultivars 'Arta' and 'Mara' 119.5 ± 02.6 and 110.5 ± 1.9 g kg-1 accordingly. Low starch content, but high β-glucan content are characteristic for all Latvian cultivars.


Vojevoda L.,Latvia University of Agriculture | Vojevoda L.,State Stende Cereals Breeding Institute | Gaile Z.,Latvia University of Agriculture
Research for Rural Development | Year: 2013

Agricultural farms in modern production system are specialized;therefore, animal-origin organic fertilizers are not available for many of them. Researches on the use of organic products in agriculture to restrict the use of pesticides and mineral fertilizers have been performed for a long time. Nowadays different organic preparations that are acquired as a result of complex processes are produced, ensuring ready-to-use biologically active substances in them and also activating their properties. One of the purposes of the research was to evaluate the impact of extracts from organic products on the potato (Solanum tuberosum) yield and tuber quality in the conventional cultivation system. A field experiment using cultivars 'Borodyansky Rozovij' (early maturity) and 'Lenora' (mid-early maturity) was arranged in the State Stende Cereals Breeding Institute in 2011 and 2012. Peat elixir and vermicompost extract obtained at different temperatures: + 45 °C and + 95 °C, as well as a mixture of these extracts were used for treatment of tubers and plants. The research included 24 treatments in total, including control (without treatment) and a standard potato cultivation technology. Tubers were treated immediately before planting, but plants were treated three times during the vegetation period. Average two-year research results showed that the use of organic product extracts significantly (p<0.05) affected the tuber yield in different treatments for both cultivars 'Borodyansky Rozovij' and 'Lenora'. The content of nitrates in tubers, using extracts, did not exceed the allowable level (160 mg kg-1) in any of treatments. Key words: potatoes, crop, organic product extracts, peat elixir, vermicompost extract, nitrates.


Brunava L.,Latvia University of Agriculture | Brunava L.,State Stende Cereals Breeding Institute | Alsina I.,Latvia University of Agriculture
Research for Rural Development | Year: 2014

Height at the center of gravity is a part of mathematical model to interpret risk of lodging used for cereal crops. Because of the anatomical changes during vegetation period, several measured parameters in early milk stage (stem and panicle weight) will differ from over-ripe stage results in their values. The aim of this study was to define approximate values of calculated parameters describing oat (Avena sativa L.) height at the center of gravity in early milk and over-ripe stages as well as determine connection with lodging risk. The trial was carried out at the State Stende Cereals Breeding Institute in 2013. There were 5 oat cultivars studied. At the investigated growing stages plant samples were taken from a field and in laboratory conditions stem/panicle weight and length measured. The height at the center of gravity and gravity ratio were calculated using mathematical model by Berry (1998). Results showed that the value of the height at the center of gravity in over-ripe stage was significantly higher (p<0.01) than in early milk stage, but correlation with risk of lodging remained. Such lodging resistance describing mathematical model can be useful for oat as well as wheat cultivars.

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