In this paper roundwood prices were forecasted by means of the following time series models: (1) classical univariate autoregressive moving average (ARIMA), (2) seasonal (SARIMA), and (3) bivariate with an exogenous variable (SARIMAX). The data consisted nominal pine, spruce, beech, birch, alder construction confidence index (CCI) in Poland for years 2005–2020. results indicate that can be evaluated implemented models, forecast accuracy depending on horizon, model applied, tree species....

Using timber from multifunctional forests for energy production can be economically viable and environmentally friendly when it is consistent with the principles of sustainable management; otherwise, could harmful both an ecological commercial point view. The objective this paper was to present overall balance biomass felled trees in assess what kind how much used purposes. research material consisted data on forest resources volume removal Polish State Forests 2016–2020. branches stumps...

The article presents a model for optimizing biomass supply chains using the linear programming framework integrated with Geographic Information System. Based on distance from given type of resource, its calorific value, price, and transportation costs, identifies optimal source biomass, allowing it to cover demand required total energy value lowest possible costs. case study includes Połaniec power plant in southeastern Poland potential sources forest agricultural straw within 100 km plant....

The aim of this study was to analyze the factors that can influence pork prices, particularly effects various types fluctuations on volatility prices in European Union as a whole market and individual EU countries. research material consisted monthly time series collected from 2009 2020. These data originated Integrated System Agricultural Information coordinated by Polish Ministry Agriculture. global production volumes is Food Agriculture Organization Statistics (FAOSTAT) database. Time...

This paper assesses the priority of forest ecosystem services (FESs) and defines sociodemographic profile people who consider particular to be an essential function forests. The research material consists results a questionnaire survey conducted on 1402 Polish respondents. Twelve different types FESs were evaluated, which respondents assigned relative (Ps) five-point Likert scale. significance differences in importance individual was assessed using Kruskal–Wallis ANOVA rank test, while...

Abstract The objective of the study was to determine effect breed (A) and free-range production system (B) on quality meat from hens two breeds, Greenleg Partridge (Z-11) Rhode Island Red (R-11), which are under biodiversity conservation programme in Poland. Subjects were 120 each breed, assigned treatment groups differing housing system: 60 layers kept litter without outdoor access (C) raised with free range (FR). At 56 weeks age, 8 randomly chosen group, slaughtered, subjected slaughter...

Abstract The purpose of this paper was to assess the impact reducing stocking density level recommended by Council Directive 2007/43/EC on broiler production profitability. study carried out using example three broiler-only farms located in southern Poland. with area 950 m 2 , 3 400 and 5 040 had fully automated systems for feeding, watering ventilation. In total, research covered 54 rounds years 2009–2011. material included data concerning costs achieved results, as well income obtained...

The present work applied a data envelopment analysis (DEA) model to assess changes in the technical efficiency of timber production at period transition forest management priorities. study material consisted on sold by Polish State Forests (PSF) and its inputs years 1990–2019. During economic Poland (1990–2003) average amounted 0.809 was highly variable. In free-market period, that much higher (on 0.939) more stable. This improvement achieved substantial layoffs PSF, steady rise share...

Using intervention analysis and time series of roundwood prices from ten European North American countries, we analyzed the impact COVID-19 pandemic on movement timber prices. The study material consists forty-six quarterly logs pulp, both softwood hardwood, covering period 2005–2022. During Covid-19 (2020:Q1-2020:Q4), log mostly underwent declines, with changes being largest in Slovakia (−35%), Czech Republic (−24%) Austria (−24%), slightly smaller United States (−19%), Poland (−17%),...

The growing demand for social and regulatory forest ecosystem services can significantly modify the availability cost of biomass energy purposes. This article presents a model optimizing supply chains using linear programming framework integrated with geographic information system (GIS). Based on given type resource, its calorific value, price, distance from power plant, transportation costs, identifies optimal source biomass, allowing it to cover required total value lowest possible costs....

Abstract The aim of the study was to determine effect genotype (breed/line) and spaying pullets on body weight, estradiol level, carcass meat quality. Subjects were Rhode Island Red (R-11), Yellowleg Partridge (Ż-33) Sussex hens (S-66), 100 birds per line, which divided into 2 groups, each having 50 poulards. Spaying performed at 10 wk age, under local anesthesia by a veterinarian. present showed that blood levels in poulards much lower than regardless genotype. Poulards higher weight their...

1. The effects of changes in technical efficiency on the increase broiler production are presented for period 1994-2013 based panel data from seven farms located southern and central Poland. A total 766 cycles were analysed. 2. Cobb-Douglas function was used to assess output elasticities as well production, 5-year sub-periods separately. 3. Technical indices significantly improved between years 1994-2013: feed conversion ratio decreased 2.50 kg/kg 1.78 kg/kg, mortality rate 8.8% 4.0% daily...

produkcji żywca brojlerów w Polsce. Materiał badawczy stanowiły dane dotyczące poniesionych nakładów oraz uzyskanej wielkości latach 1994-2013 trzech fermach położonych województwach opolskim i śląskim. Do określenia relacji nakłady-produkt zastosowano funkcję Cobba-Douglasa. Decydujący wpływ na wielkość miały nakłady kapitału obrotowego. Produktywność obrotowego wzrosła o ponad 30%, co oznacza dłuższym okresie obniżenie kosztów produkcji. Było ono głównie efektem zachodzącego ogólnego...

The aim of the study was to show changes in volume production, foreign trade and prices geese Poland against backdrop world along with presentation new trends. most important producer China, whose production reached 95% recent years. remains second ranking (with approx. 30,996 tons, which accounted for 1.2% 2016), is followed by countries such as Egypt (1.06%) Hungary (1.02%). Prices goose meat were highest all poultry species and, compared chickens, they higher, ranging from 60% 2005 170%...

We analyzed the relationship of softwood market in chosen EU countries. The long-run was tested using multivariate Johansen procedure and bivariate Engle-Granger cointegration test. Precedence causality markets short-run were weak exogeneity test for cointegrated Granger not cointegrated. material consists quarterly sawlog pulpwood delivery prices (spruce pine) covering 2005 to 2020. Using Zivot-Andrew Chow test, we identify a structural break price series between 2007 2009 (breakpoints...

Celem pracy jest analiza wpływu wybranych czynników na poziom cen żywca brojlerów w okresie przed przystąpieniem Polski do UE (1995-2004) oraz po akcesji (2005-2015). Wykazano, że pierwszym cenę decydujący wpływ miały czynniki kosztowe (cena piskląt, paszy i pszenicy). W drugim nastąpił wzrost popytowych, tym sezonowy związany ze zwiększonym popytem mięso drobiowe miesiącach letnich.

The 2020–2021 COVID-19 pandemic has had a tremendous impact on the daily lives of everyone, including local communities and entire societies. Under influence this new experience, importance services benefits provided by forests other green spaces increased. A very large role in aspect was played media messages promoting idea being close to nature as remedy for malaise stress, pushing thesis that risk spreading virus outdoors is lower than it indoors. Thanks messages, well government...

Aim: To present the type and level of fluctuations pig livestock prices against chicken, turkey, cat­tle price from 2006 to 2022. Methods: The data consisted a monthly time series pig, broiler cattle Integrated Agricultural Market Information System (ZSRIR). Price were analyzed by decomposition using Census X11 method. Results: Nominal have increased 82% over last seventeen years (2006–2022), while real remained at same level. Pig in similar those turkeys, 50% higher than chickens 45% lower...

Celem pracy była analiza zmienności cen mięsa kurcząt brojlerów w krajach UE latach 2007-2016. Określono odpowiednie statystyki opisowe oraz przeprowadzono dekompozycję szeregu czasowego cen. Wielkość produkcji 2007 roku wynosiła 8,76 mln ton i wzrosła do poziomu 10,98 2014r. Największymi producentami 2014 były: Polska (14,9% udziału UE), Wielka Brytania (13,1%), Hiszpania (11,2%), Francja (10,0%) Niemcy (9,4%). Najwyższe ceny występowały Niemczech, Finlandii na Cyprze, a najniższe Polsce,...

The aim of the study is analysis influence chosen factors on broiler livestock price in period before Poland join EU (1995-2004) and after accession (2005-2015). It was stated, that first cost such as chicks, feed wheat had deciding price. In second increase demand occurred including seasonal increasing connected with increased for poultry meat summer months. / Synopsis. Celem pracy jest analiza wplywu wybranych czynnikow na poziom cen zywca brojlerow w okresie przed przystąpieniem Polski do...