Comment on 'Efficiency analysis with panel data: A study of Portuguese dairy farms'

1998 ◽  
Vol 25 (2) ◽  
pp. 259-262 ◽  
Author(s):  
G. E. BATTESE
Keyword(s):  
Panel Data ◽  
Dairy Farms ◽  
Efficiency Analysis

scholarly journals Análisis de la calidad de la leche en un modelo microeconómico multi-output: El papel de la genética

2011 ◽  
Vol 5 (10) ◽  
pp. 3 ◽  
Author(s):  
Antonio Álvarez ◽  
Carlos Arias ◽  
David Roibás
Keyword(s):  
Panel Data ◽  
Milk Production ◽  
Distance Function ◽  
Dairy Farms ◽  
Milk Quality ◽  
Production Model ◽  
Genetic Traits

In this paper we analyze the influence of genetics on milk quality. For that purpose, we use a multi-output production model in which milk quality is included as an additional output in milk production. A distance function is used to estimate empirically the contribution of genetics to milk quality. For that purpose, we use a panel data of 96 dairy farms in Asturias. This dataset contains indexes measuring the genetic traits of the herd.

The efficiency analysis of container port production using DEA panel data approaches

OR Spectrum ◽  
2010 ◽  
Vol 32 (3) ◽  
pp. 717-738 ◽  
Author(s):  
Kevin Cullinane ◽  
Tengfei Wang
Keyword(s):  
Panel Data ◽  
Efficiency Analysis ◽  
Container Port

scholarly journals Efficiency Analysis with non parametric method: Illustration of the Tunisian ports

2018 ◽  
Vol 9 (1) ◽  
pp. 51-58
Author(s):  
Arbia Hlali
Keyword(s):  
Panel Data ◽  
Technical Efficiency ◽  
Parametric Method ◽  
Returns To Scale ◽  
Efficiency Analysis ◽  
Data Set ◽  
Low Levels ◽  
Constant Returns To Scale ◽  
Variable Returns To Scale ◽  
Non Parametric

AbstractThis paper applies a non-parametric method to provide level technical efficiency for 7 Tunisian ports during 18 years (1998-2015). These ports represent different data set. The use of the model of variable returns to scale (VRS) has led to interesting results. The results show that the most ports are characterized by low levels of technical efficiency, with the exception port of Rades. In addition, the result shows the variation of variable returns to scale and constant returns to scale of technical port’s efficiency. Furthermore, we concluded that the panel data improves the efficiency estimates.

Technical Efficiency of Road Haulage Firms

2005 ◽  
Vol 1906 (1) ◽  
pp. 26-32
Author(s):  
José Baños-Pino ◽  
Gema Carrera-Gómez ◽  
Pablo Coto-Millán ◽  
Vicente Inglada ◽  
Miguel Angel Pesquera González
Keyword(s):  
Panel Data ◽  
Technical Efficiency ◽  
Economic Efficiency ◽  
Road Transport ◽  
Efficiency Analysis ◽  
Theoretical Concepts ◽  
Transport Services ◽  
Road Haulage ◽  
Measuring Efficiency ◽  
Theoretical Application

This study justifies the contemporary importance of efficiency analysis. The theoretical concepts of technical, allocative, and economic efficiency are presented. Empirical problems are addressed, with different ways of measuring efficiency and their inherent disadvantages presented. A theoretical application is given for haulage firms operating on Spanish roads in six subsectors with panel data. The liberalization of goods road transport policies in the 1990s has engendered a more technically efficient reorganization of road transport regions, which will result in innovations in transport services, lower fares, greater diversity in contracts, and better transport quality.

scholarly journals EFFECTS OF AGRICULTURAL SUBSIDIES ON INCOME RISK IN LITHUANIAN DAIRY FARMS

2016 ◽  
Vol 38 (4) ◽  
pp. 351-358 ◽  
Author(s):  
Imre Ferto ◽  
Aldona Stalgienė
Keyword(s):  
Panel Data ◽  
Positive Impact ◽  
Dairy Farms ◽  
Econometric Models ◽  
Farm Size ◽  
Farm Income ◽  
Income Risk ◽  
Agricultural Subsidies ◽  
Coefficients Of Variation ◽  
Income Variability

The aim of the paper is to investigate the effects of agricultural subsidies on income variability of Lithuanian dairy farms. In addition, the observed heterogeneity in income risks across farms and time is explained in terms of farm characteristics. It was employed balanced farm-level panel data of the Lithuanian farm accountancy network (FADN) was used to construct coefficients of variation of five-year gross farm revenues over the period 2010 to 2014. Various econometric models are applied to measure the effect of off-farm income, total subsidies, farm size, and financial immobility on the variability of gross farm incomes. Estimations suggest that agricultural subsidies, liquidity have positive impact on income risk. The age of farmers negatively influences the income risk. There is non-linear relationship between farm size and income risk.

scholarly journals The effect of cow longevity on dynamic productivity growth of dairy farming

2020 ◽  
Author(s):  
Beshir Melkaw Ali
Keyword(s):  
Panel Data ◽  
Productivity Growth ◽  
Technical Change ◽  
Positive Association ◽  
Dairy Farms ◽  
Dynamic Panel Data ◽  
Productivity Change ◽  
Significant Positive Association ◽  
Technical Inefficiency ◽  
Explanatory Variables

Abstract Cow longevity is recognized as an important trait to improve farm economic performance while concurrently reducing environmental and societal impacts. However, there is an economic trade-off between longevity and herd genetic improvement, which may influence the evolution of dairy farms’ efficiency and productivity over time. This study used a panel data of 723 Dutch specialized dairy farms over 2007-2013 to empirically measure the effect of longevity on dynamic productivity change and its components. First, the productivity growth estimates were obtained using the Luenberger dynamic productivity indicator. Then, the estimates were regressed on longevity and other explanatory variables using dynamic panel data model. Results show that the average dynamic productivity growth was 1.1% per year, comprising of technical change (0.5%), scale inefficiency change (0.4%) and technical inefficiency change (0.2%). Longevity is found to have a statistically significant positive association with productivity growth and technical change, implying that farms with more matured cows were also those farms that recorded increased productivity through technical progress. However, it has a negative association with technical inefficiency change, which might follow from the reduced milk productivity of old cows. Dutch dairy farms have a potential to raise productivity growth by reducing technical inefficiency.

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