SLO | ENG | Piškotki in zasebnost

Večja pisava | Manjša pisava

Iskanje po katalogu digitalne knjižnice Pomoč

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju


51 - 60 / 294
Na začetekNa prejšnjo stran234567891011Na naslednjo stranNa konec
The economic viability of value-based food chain for dairy farms in mountain regions
Jernej Prišenk, Andreja Borec, Marjan Janžekovič, Ivo Grgić, Karmen Pažek, Črtomir Rozman, Jernej Turk, 2016, izvirni znanstveni članek

Opis: The attention of this paper is drawn to analyze the economic potential of involvement of farmers into the small-medium sized value-based food chain (VBFC). The survey represents a solid data basis from which econometric modelling approach was further developed. Empirical results reveal the positive economic viability on a general level; this means more stable purchase price of raw milk for dairy farms, which are the part of value-based food chain. Results point at inelastic demand for milk and milk related products. Furthermore, there are some accompanying and underlying indirect social benefits, such as production of high-quality food products, more stable and constant demand for raw milk, steady payments and better social situation. The last one is especially important for the farms operating in less-favored mountain areas where the survey was actually conducted.
Ključne besede: mountain dairy farms, demand for milk, Value-based food chain, econometric modelling
Objavljeno: 10.07.2017; Ogledov: 69; Prenosov: 3
.pdf Celotno besedilo (272,24 KB)

Quality and delivery of milk in Slovenia
Marjan Janžekovič, Maksimiljan Brus, Lidija Mužerlin, 2007, izvirni znanstveni članek

Opis: Milk production represents the possibility of earning monthly income and assures social security to many farms in Slovenia. In Slovenia the European rules and regulations on the quality of the delivered milk have been introduced, relating to the hygienic quality of milk and the count of somatic cells. The purchase price of the milk depends also on the protein and fat content. The aim of the research was to establish, whether the quality of the delivered milk complies with the prescriptions regulated by the Slovene legislation. The quality of the delivered milk in the area of the Šentjur agricultural cooperative (ACŠ) and in the entire area of Slovenia (SLO) has been studied. The bacteriological data in the individual quality classes, the data on the total count of somatic cels and the data on the fat and protein contents have been analyzed. 36 monthly accounts have been included in statistical processing. It has been established that the delivered milk of the areas in question does not differ in the relevant quality values.
Ključne besede: cattle, milk quality, fats, proteins, micro-organisms, somatic cells
Objavljeno: 10.07.2017; Ogledov: 96; Prenosov: 6
.pdf Celotno besedilo (337,54 KB)

Multiple-criteria approach of evaluation of milk farm models in Bosnia and Herzegovina
Črtomir Rozman, Zoran Grgić, Aleksandar Maksimović, Ferhat Ćejvanović, Adis Puška, Branka Šakić Bobić, 2016, izvirni znanstveni članek

Opis: Cattle breeding is a very important part of agricultural production in Bosnia and Herzegovina (B&H), and milk production has a vital place in cattle breeding production. From an economic point of view, milk production is interesting as it is a daily production which presupposes faster marketing, which accelerates capital movement in agriculture, which in turn enhances liquidity. This research uses analyses of the existing state in milk production. The collected data are processed and cost calculation has been designed which enables the analysis of economic indicators of 4 dairy farm production models in B&H. Based on the collected data on features and values of dairy farm production models in B&H an analysis of expert evaluation was conducted as input data for DEXi method. The aim of this paper is to ascertain the basic indicators of business success of 4 dairy farm production models in B&H. Production-ecological, economic and socio-political features of the mentioned dairy farm models were analyzed. Based on the used criteria a rate of dairy farm production models using DEXi method was conducted. The results of the research in this paper using DEXi method show that the best model for dairy farm is model number four, which includes 45 milk cows.
Ključne besede: dairy farms, production models, economic indicators, DEXi, Bosnia and Herzegovina
Objavljeno: 10.07.2017; Ogledov: 70; Prenosov: 8
.pdf Celotno besedilo (1,93 MB)

Multi-criteria and econometric evaluation of dairy products
Karmen Pažek, Jernej Turk, Sebjan Hari, Črtomir Rozman, Jernej Prišenk, 2014, izvirni znanstveni članek

Opis: This study examined the multi-criteria assessment of four dairy products: "Pomursko mlejko" (Pomurje milk), "Lejko mleko" (light milk), "Fyto mleko" (Fyto milk) and "Posneto mleko v prahu" (dried milk). The research was executed by using a multi-criteria methodology, DEX, which was complemented by an econometric analysis for light milk to estimate the trends in production and consumption before analyzed dairy products were implemented on the market. DEXi computer program results indicated that all analyzed milk products were 'above average'. The econometric model was applied to examine changes in the demand for low-fat milk (light milk). Empirical results showed significant consumer response to the increase in the prices of low-fat milk demonstrating income elasticity (1,15 unit).
Ključne besede: multi-attribute decision theory, DEXi, econometric analysis, milk products
Objavljeno: 10.07.2017; Ogledov: 102; Prenosov: 10
.pdf Celotno besedilo (636,19 KB)

Effect size measurement in functional milk product marketing
Karmen Pažek, Črtomir Rozman, Jernej Turk, Darja Majkovič, Sebjan Hari, Matej Kolenko, Sašo Pamič, Jernej Prišenk, 2011, izvirni znanstveni članek

Opis: The paper presents the application possibility of "Effect size" and Cohen's-d index in the case of introduction of new milk products on the market. The field and online survey were used to establish the potential interest of finalconsumers for new functional food product of dairy company in Slovenia - milk with phytosterols additives. Two techniques possibilities of Cohen-d index were calculated; manual and using the Cohen's-d calculator. Further, the application is focused on two main questions in survey regarding observed problem: 1) Would you buy milk with phytosterols additives, which scientifically proven lowers concentration of cholesterol in blood? 2) Would you pay for it at a higher price? The sample includes 419 surveys, 150 surveyswere conducted on field (control group) and 269 surveys were provided online (experimental group). The Cohenćs-d index (d) results show by using manual and Cohen's-d calculator for both groups "small" effect (d=0.35, i.e. d=0.34 ), and "zero or near zero" effect (d=0.15, i.e.= 0.15) when deciding to buy new milk product.
Ključne besede: effect size, Cohen`s-d index, functional food, milk
Objavljeno: 10.07.2017; Ogledov: 115; Prenosov: 8
.pdf Celotno besedilo (804,43 KB)

Effect of concentrate exchange on dairy farm
Marjan Janžekovič, Milan Repič, 2009, izvirni znanstveni članek

Opis: The purpose of the research was to establish the effect of concentrates A (C-A) and B (C-B) on the quantity and composition of the produced milk of dairy cows. The research included cows of Holstein Friesian and Simmental breeds and crossbreeds with Simmental breed. The test took place in two periods. The first period with the C-A lasted from December 2004 to February 2005 and included 113 cows. During the second period the C-B was fed. The test endured from April to June 2005. The results of monthly controls of milk quantity and protein and fat contents were entered into the Excel programme and processed with the statistical programme SPSS for Windows 12.0. When the concentrate B was fed, the milk quantity amounted to 21.99 L/day and was statistically significantly (P<0.05) greater than the milk quantity in case of feeding the concentrate A, when the milk quantity was 19.12 L/day. No statistically significant differences (P<0.05) of the protein and fat content in the milk were established.
Ključne besede: milking cows, concentrate, milk quantity, proteins, fats
Objavljeno: 10.07.2017; Ogledov: 74; Prenosov: 8
.pdf Celotno besedilo (275,28 KB)

Comparison of longevity and production traits of Holstein and Simmental cows of different origin in Slovenia
Marjan Janžekovič, Marko Ocepek, Tadej Virk, Dejan Škorjanc, 2009, izvirni znanstveni članek

Opis: The aim of this research was to establish whether there are differences in the longevity and production characteristics within the studied breeds of cows of different origin. Holstein cows of Slovenian (461) and foreign (356) origin and Simmental cows of Slovenian (261) and foreign (43) origin were studied. Only culled animals that previously had between 1 and 9 lactations were included. The analyzed properties consisted of characteristics related to the longevity and lifetime productivity. Compared with Slovenian cows, imported Holstein cows had a significantly longer calving interval (1210±31 days, 1337±39 days, P=0.008), a longer dry period (172±6 days, 192±7 days, P=0.022), and a significantly lower daily milk yield (23.0±0.2 kg, 22.0±0.3 kg, P=0.002). Significant differences between Simmental cows of Slovenian and foreign origin were observed in functional productivity (1317±52 days, 1808±186 days, P=0.006), longevity (2175±53 days, 2701±145 days, P=0.004), and duration of lifetime lactation (990±38 days, 1265±137 days, P=0.037).
Ključne besede: cows, Holstein breed, Simmental breed, production properties, longevity
Objavljeno: 10.07.2017; Ogledov: 84; Prenosov: 7
.pdf Celotno besedilo (269,31 KB)

Chronic bee paralysis virus and Nosema ceranae experimental co-infection of winter honey bee workers (Apis mellifera L.)
Ivan Toplak, Urška Jamnikar Ciglenečki, Katherine Aronstein, Aleš Gregorc, 2013, izvirni znanstveni članek

Opis: Chronic bee paralysis virus (CBPV) is an important viral disease of adult bees which induces significant losses in honey bee colonies. Despite comprehensive research, only limited data is available from experimental infection for this virus. In the present study winter worker bees were experimentally infected in three different experiments. Bees were first inoculated per os (p/o) or per cuticle (p/c) with CBPV field strain M92/2010 in order to evaluate the virus replication in individual bees. In addition, potential synergistic effects of co-infection with CBPV and Nosema ceranae (N. ceranae) on bees were investigated. In total 558 individual bees were inoculated in small cages and data were analyzed using quantitative real time RT-PCR (RT-qPCR). Our results revealed successful replication of CBPV after p/o inoculation, while it was less effective when bees were inoculated p/c. Dead bees harbored about 1,000 times higher copy numbers of the virus than live bees. Co-infection of workers with CBPV and N. ceranae using either method of virus inoculation (p/c or p/o) showed increased replication ability for CBPV. In the third experiment the effect of inoculation on bee mortality was evaluated. The highest level of bee mortality was observed in a group of bees inoculated with CBPV p/o, followed by a group of workers simultaneously inoculated with CBPV and N. ceranae p/o, followed by the group inoculated with CBPV p/c and the group with only N. ceranae p/o. The experimental infection with CBPV showed important differences after p/o or p/c inoculation in winter bees, while simultaneous infection with CBPV and N. ceranae suggesting a synergistic effect after inoculation.
Ključne besede: Apis mellifera, experimental infection, Chronic Bee Paralysis Virus, CBPV, Nosema ceranae, interaction
Objavljeno: 22.06.2017; Ogledov: 129; Prenosov: 11
.pdf Celotno besedilo (541,74 KB)

Programmable ultrasonic sensing system for targeted spraying in orchards
Denis Stajnko, Peter Berk, Mario Lešnik, Viktor Jejčič, Miran Lakota, Andrej Štrancar, Marko Hočevar, Jurij Rakun, 2012, izvirni znanstveni članek

Opis: This research demonstrates the basic elements of a prototype automated orchard sprayer which delivers pesticide spray selectively with respect to the characteristics of the targets. The density of an apple tree canopy was detected by PROWAVE 400EP250 ultrasound sensors controlled by a Cypress PSOC CY8C29466 microcontroller. The ultrasound signal was processed with an embedded computer built around a LPC1343 microcontroller and fed in real time to electro-magnetic valves which open/close spraying nozzles in relation to the canopy structure. The analysis focuses on the detection of appropriate thresholds on 15 cm ultrasound bands, which correspond to maximal response to tree density, and this was selected for accurate spraying guidance. Evaluationof the system was performed in an apple orchard by detecting deposits of tartrazine dye (TD) on apple leaves. The employment of programmable microcontrollers and electro-magnetic valves decreased the amountof spray delivered by up to 48.15%. In contrast, the reduction of TD wasonly up to 37.7% at some positions within the tree crown and 65.1% in the gaps between trees. For all these reasons, this concept of precise orchard spraying can contribute to a reduction of costs and environmental pollution, while obtaining similar or even better leaf deposits.
Ključne besede: air-assisted sprayer, ultrasound, algorithm, programmable, microcontroller, spray distribution, orchard
Objavljeno: 22.06.2017; Ogledov: 204; Prenosov: 10
.pdf Celotno besedilo (890,30 KB)

The role of functional foods, nutraceuticals, and food supplements in intestinal health
Avrelija Cencič, Walter Chingwaru, 2010, pregledni znanstveni članek

Opis: New eating habits, actual trends in production and consumption have a healyh, environmental and social impact. The EU is fighting diseases characteristics of a modern age, such as obesity, osteoporosis, cancer, diabetes, allergies and dental problems. Developed countries are also faced with problems relatingto aging populations, high energy foods, and unbalanced diets. The potential of nutraceuticals/functional foods/food supplements in mitigating health problems, especially in the gastrointestinal (GI) tract, is discused. Certain members of gut microflora (e.g., probiotic/protective strains) play a role in the host health due to its involvment in nutritional, immunologic and physiologic functions. The potential mechanisms by which nutraceuticals/functional foods/food supplements may alter a host's health arealso highlighted in this paper. The establishment of novel functional call models of the GI and analytical tools that allow tests in controlled experiments are highly desired for gut research.
Ključne besede: nutraceutical, functional food, food supplement, intestinal health, probiotic, intestinal cell models, gut research
Objavljeno: 22.06.2017; Ogledov: 155; Prenosov: 15
.pdf Celotno besedilo (276,92 KB)

Iskanje izvedeno v 0.09 sek.
Na vrh
Logotipi partnerjev Univerza v Mariboru Univerza v Ljubljani Univerza na Primorskem Univerza v Novi Gorici