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Inhibition of microbial growth of a salad with meat in mayonnaise by different packaging technologies Full text
2009
Levkane, V., Latvia Univ. of Agriculture, Jelgava (Latvia) | Muizniece-Brasava, S., Latvia Univ. of Agriculture, Jelgava (Latvia)
The objective of the research was the shelf life extension of a salad with meat in mayonnaise. The microbial stability of the salad with meat in mayonnaise packaged under vacuum, in modified atmosphere, and using 'Sous vide' technology was examined and compared with conventionally packaged (in ambient air) salad. The salads were packaged in polyamide/polyethylene pouches with barrier properties as well as in pouches made from biodegradable plasticized poly-β-hydroxybutyrate or polylactic acid film. Control samples without preservatives were packed in traditional polypropylene containers covered with non-hermetic lids. PURASA L Powder Opti Form (sodium lactate) in the amount 5 g kgE-1, 10 g kgE-1, and 15 g kgE-1, and ethyl alcohol in the amount of 2 ml were used as single preservatives for separate samples. The studies of the samples were carried out after 1, 3, 7, 10, 15, 18, 25, 29, 42, and 52 storage days at the temperature of +4+-0.5 deg C. Experimentally the quality of the salad with meat in mayonnaise was characterized by measuring the total plate count of microorganisms. The obtained results indicate that different packaging technologies and addition of preservatives show significantly different influence on the microbial growth in different samples. 'Sous vide' packaging technology was effective for the shelf life extending and guarantee of safety of the salads with meat in mayonnaise.
Show more [+] Less [-]Geographical differences in growth and quality characters of Scots pine Latvian populations Full text
2009
Neimane, U., Latvia Univ. of Agriculture, Jelgava (Latvia)
In the study the growth and stem quality characters of geographically different Latvian Scots pine (Pinus sylvestris L.) populations were evaluated. In various regions of Latvia proportionally to the distribution of Scots pine 21 sample plot was established in 85 to 95 years old pure stands in forest type Myrtillosa growing conditions. In every sample plot 100 trees were evaluated estimating height of the tree, diameter at breast height, stem volume, length and quality of the branch-free stem section, relative branch thickness, branch angle and stem straightness. Pine populations were compared in different seed zones (Western and Eastern), as well as in various regions (Western, Central, South-eastern, North-eastern). In order to describe the geographical differences of populations with help of growth features, tree height was chosen because the relation between height and stem quality features is positive. The populations of the Eastern seed zone substantially overcome the populations of the Western seed zone both in terms of growth features, as well as in stem quality. Substantial are also differences between populations growing in various regions in terms of average height, length and quality of branch-free stem section, relative branch thickness and branch angle, but not stem straightness. Western populations present the lowest growth feature values and stem quality. The height and stem quality features of the North-eastern populations considerably exceeded the features of other regions' populations.
Show more [+] Less [-]Feeding entire male pigs (Sus scrofa domestica) with high amylose barley cultivar (Hordeum vulgare): impact on boar taint and performance Full text
2009
Chen, G., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Food Science | Andersson, K., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Animal Nutrition and Management | Andersson, R., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Food Science | Lundstroem, K., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Food Science | Zamaratskaia, G., Swedish Univ. of Agricultural Sciences, Upsala (Sweden). Dept. of Food Science
The effect of dietary supplement with 17% high-amylose barley (Hordeum vulgare, HAB) 'Karmose' on boar taint was studied on 72 crossbred entire male pigs (Sus scrofa domestica) Swedish Yorkshire dams x Swedish Landrace sires). All pigs were fed the same commercial diet (12.4 MJ metabolised energy (ME) per kg, digestible crude protein (CP) 13.5%) twice a day until the average live weight (LW) in the pen reached 100 +- 11.8 kg. Then, 32 out of 72 pigs received an HAB diet. Half of these pigs received HAB for 14 days and the other half for 28 days. The pigs were slaughtered at an average LW of 122.3 +- 8.6 kg (age 167.2 +- 7.5 days). The HAB diet did not affect performance, carcass and meat quality characteristics, and puberty status, but reduced plasma skatole levels in the pigs (least squares means, 3.6 vs. 2.0 ng mlE-1, P = 0.037). However, this diet failed to reduce skatole, indole and androstenone levels in fat (P is greater than 0.10). Nevertheless, it is desirable to continue investigation of HAB to optimise the feeding procedure to improve efficiency of HAB effect on fat skatole levels. Additionally, validation of a greater amount of HAB in the diet should be performed.
Show more [+] Less [-]Effects of acepromazine maleate on intraocular pressure and pupil diameter in dog's eye Full text
2009
Kovalcuka, L., Latvia Univ. of Agriculture, Jelgava (Latvia) | Birgele, E., Latvia Univ. of Agriculture, Jelgava (Latvia)
The research was performed at the Faculty of Veterinary Medicine of the Latvia University of Agriculture. At the moment the research in veterinary anaesthesia is in its infancy stage. The aim of this study was to determine the effects of the acepromazine maleate on intraocular pressure (IOP) and horizontal pupil diameter (HPD) in a dog's eye. Ten adult dogs of different age, breed and sex were examined clinically and ophthalmologically. All animals were clinically and ophthalmologically healthy. Animals received acepromazine intramuscularly. IOP and HPD were measured every 5 minutes for the total period of 60 minutes. It was established that the acepromazine maleate intramuscular injection causes an IOP decrease in booth eyes. A significant IOP decrease was observed from 35 till 60 minutes after the acepromazine injection. The pupil contraction was observed 5 minutes after the treatment and continued to contract till the end of the research. As acepromazine maleate causes a significant decrease of intraocular pressure, it is not contraindicated to be used in the case of corneal trauma, perforation, glaucoma and corneal ulcers.
Show more [+] Less [-]Helicobacters and morfological changes in the gastric mucosa of domestic dogs (Canis familiaris) Full text
2009
Berzina, D., Latvia Univ. of Agriculture, Jelgava (Latvia) | Birgele, E., Latvia Univ. of Agriculture, Jelgava (Latvia)
This study was performed to detect morphological changes of the gastric mucosa according to the prevalence of helicobacters in the gastric mucosa of domestic dogs (Canis familiaris) from the Small animal clinic of Faculty of Veterinary Medicine, Latvia within 2008 year period. Mucosal samples were taken from several places of cardiac, fundic and pyloric gland region of the stomach to detect helicobacters with light histological examination. Seventeen dogs of eighteen sampled animals showed presence of tightly spiraled helicobacters. Compared to gastric regions our study showed significantly higher prevalence of helicobacters in the cardiac and fundic gland region than in the less effected pyloric gland region of the stomach. Histological examination also showed the depth of location of helicobacters in gastric pits and deeper glandular epithelium of the gastric mucosa in different regions of the stomach. In the pyloric gland region helicobacters are located deeper in the gastric pits and glandular epithelium than in the gastric mucosa of cardiac and fundic gland region Morphological changes of gastric mucosa was divided into 4 groups: 1) mucosa without morphological changes, 2) mucosal hyperemia, 3) mucosal erosions, and 4) mucosal polips. Morphological changes especially mucosal polips are significantly more in the pyloric gland region than in the cardiac and fundic gland region. The amount of morphological changes in the helicobacter positive and negative samples were not significantly different in the cardiac and fundic gland region, but in the pyloric gland region morphological changes of the gastric mucosa are significantly more in the helicobacter positive samples than in the helicobacter negative samples.
Show more [+] Less [-]The theoretical and legal aspects of area payments in Latvia Full text
2009
Klava, S., Latvia Univ. of Agriculture, Jelgava (Latvia) | Pilvere, I., Latvia Univ. of Agriculture, Jelgava (Latvia)
The study summarises the theoretical and legal aspects of the main types of area payments in Latvia. From the point of view of theoretical and legal arrangements, the area payments may be broken down in two large groups: direct payments and area payments foreseen under Rural Development Programs. The legal package regulating Area Payments consists of the EU regulatory enactments (Council or Commission Regulations) and regulatory enactments of Latvia (Laws and the Cabinet (MK) Regulations). The institutional implementation system of each group of Area Payments is relevant and distinct. The present study analyses 11 different types of Area Payments. Over the period 2004 - 2007, farmers have received LVL 430 million in different Area Payments constituting 58.5% of the total amount of support.
Show more [+] Less [-]Development of social transfers in the social security system in Latvia Full text
2009
Mistre, B., Latvia Univ. of Agriculture, Jelgava (Latvia)
In the paper, the philosophical and historical evolution of social transfers and their role in Latvia's social security system have been investigated. Definitions of social transfers have been studied, and a classification of social transfers has been made. The most suitable social security system, which, to a great extent, depends on social policies and a socio-economic situation in a country, is elaborated in every country. Latvia's social security system includes state social insurance, state social benefits, social services, and social assistance that are based on financing from both the state basic budget and the state special budget, and municipal budgets. Social transfers have a significant role in the social security system in order to provide protection for the population in social risk situations; they impact the welfare of the population during this period.
Show more [+] Less [-]Results and legal restrictions of debt recovery in Latvia Full text
2009
Filipovica, A., Latvia Univ. of Agriculture, Jelgava (Latvia)
Credit is an important impellent of economics and promoter of welfare that is the reason why government politics supported credit accessibility to legal and physical persons, which has led to the delayed payments in every business sector. The amounts of crediting in late years has sharply risen, wherewith increases the amount of inhabitants and enterprises, who can't repay their civil liability commitment. It is important to recover commitments to get finance for other investments. The amount of debt recovery is rising in Latvia peripheral economical breakdown that proves demonstrated information in the article about the situation at present. Only in year 2008 banks slacked the speed of lending, but amount of debt recovery is just rising. There was not all civil liability commitment entered that has appeared to legal and physical persons in Latvia, in Register of Debtors. Now when the Credit Register has come to the operation, the situation is clearer than it was before. One of the ways for creditors to return their funds is through court. Between years 2003 and 2008 approximately 11% of plaintiff actions have been satisfied already in court, terminating them. 61% of plaintiff actions have been satisfied with judgment of court. Take a note, that requirements in debt recovery change, as well as the interpretation of the laws and regulations. Whereby the debt collectors change contract regulations unhesitatingly provide positive result in courts.
Show more [+] Less [-]Gross economic effect of dairy sector in Latvia and other Baltic States Full text
2009
Ozolins, J., Latvia Univ. of Agriculture, Jelgava (Latvia) | Veveris, A., Latvian State Inst. of Agrarian Economics, Riga (Latvia)
Implementation of special support measures and resolving its main problems with effective methods in medium-run may allow to maintain the dairy sector as a significant traditional element of the Latvian economy. It is important to know the gross economic effect of the Latvian dairy sector in order to take informed and rational support decisions. Authors have developed and approbated methods and by applying these have obtained new, unpublished data that characterize economic effect of the sector. The data have been analysed in Latvian and the Baltic States context. It is concluded that the dairy sector is significant to the Latvian economy mainly due to gross value added and especially because of its role in providing work opportunity. Authors call attention to reserves in gross value added growth per full time equivalent unit in the secondary production in all Baltic States. The data of the primary dairy sector level in turn indicate lower potential of growth that is evidenced by even a slight decrease in indicators of the comparatively more effective Estonian producer structure. Therefore, it can be expected that the weight of dairy sector secondary level in the dairy sector gross value added will increase. Authors point out certain possible solutions of the Latvian dairy sector's problems such as promotion of joint ownership structure. Main analysed indicators are gross value added at factor cost, use of labour in full time equivalent units and labour use effectiveness.
Show more [+] Less [-]The impact of controlled drainage on water quality Full text
2009
Bastiene, N., Lithuanian Univ. of Agriculture, Kaunas (Lithuania). Water Management Inst. | Sauliene, A., Lithuanian Univ. of Agriculture, Kaunas (Lithuania). Water Management Inst.
Eight-year (2000-2007) field studies on the effectiveness of controlled drainage in loam sandy soil were carried out in the Lowland of Middle Lithuania. The plot, which has existing subsurface water removal systems operated as conventional drainage was readjusted for the water table management. Two separate systems - 4.9 hectares free drainage (FD) and 5.4 hectares controlled drainage (CD) were arranged. A water level control structure with a riser column and hand operated rigid flap door was installed in the outlet of drainage collector in the manhole at the junction of two collectors. The water table level was allowed to rise to the maximum of 68 cm above the drains. Measurements to record the water table depth, drain outflow quantity and quality were performed. It was determined that in the CD system the annual drainage outflow lasted shorter by 40-62%, at the same time it was reduced by 25% and nitrate leaching - by 20-28% lower in comparison with the drainage operating in an ordinary regime. These indicators varied depending on weather conditions. The water table control in single-acting drainage systems is feasible and has a positive hydrological and environmental impact.
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