Nahidh Naji Issa; Hassan Thamer Zanzal
Volume 22, Issue 3 , September 2022, , Pages 20-28
Abstract
Despite the seriousness individual attempts made by some breeders to develop and improve methods of breeding and fattening to reduce costs, but most breeders follow the traditional methods of breeding and fattening their livestock, and this is what prompted me to do this study, A questionnaire for a ...
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Despite the seriousness individual attempts made by some breeders to develop and improve methods of breeding and fattening to reduce costs, but most breeders follow the traditional methods of breeding and fattening their livestock, and this is what prompted me to do this study, A questionnaire for a sample of (100) breeders in Mahmoudia district (case study) for the year 2021, the study aimed to derive the cost function in long-run from the output of Cobb-Douglas production function, as well as deriving the supply function from the cost function in long-run derived from the Cobb-Douglas production function, and derivation the supply function From the production function estimated for Calves fattening projects, in addition to deriving the two demand functions for labor and capital Resources which use in the production process of Calves fattening projects, The cost function in long-run was estimated, and the results of the study showed that the demand for labor and capital in Calves fattening projects was up to (160.7) man /day for labor and (12,776.874) thousand dinars for capital. The displayed quantity of production is about (4040.77) kg, the study recommends the necessity of providing feed, especially concentrated feed, in the necessary quantities and qualities during different seasons by providing hybrid fodder crops such as fodder corn to obtain the desired weight gain.
Nasaif jasim Mohammad
Volume 21, Issue 4 , December 2021, , Pages 91-101
Abstract
The corn crop is one of the main crops in Iraq and is of great importance in terms of food and industry, as it is used in the manufacture of corn flakes, starch, oil, etc., and is used as animal feed. The research aimed to estimate the supply function of the maize crop in Iraq for the period (1990 - ...
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The corn crop is one of the main crops in Iraq and is of great importance in terms of food and industry, as it is used in the manufacture of corn flakes, starch, oil, etc., and is used as animal feed. The research aimed to estimate the supply function of the maize crop in Iraq for the period (1990 - 2019) and to determine the factors affecting the production of the crop, represented by the price and non-price factors. The Nerlov partial adjustment model was used for a set of explanatory variables, namely, corn production as a dependent factor, the price of the crop for the current and previous years, rains, corn production in the previous year, price risk, technology variable, and the qualitative variable represented by the economic blockade as independent factors. The method of least squares was used in the analysis of several functions including linear, double logarithmic, half logarithmic and inverse logarithmic. The results indicated that the double logarithmic function is the best in terms of its conformity with the logic of economic theory and statistical criteria. The value of the coefficient of determination R2 was (0.89), and this indicates that the independent factors affect by (89%) the dependent variable, and that (11%) are due to other factors outside the model whose impact is absorbed by the random variable. The results of all parameters appeared significant according to the t-test at a level of significance (1%) to express the relationship between the dependent variable and the independent variables, and that the calculated F value is greater than the tabular F value, which amounted to (76.69), which indicates the significance of the model as a whole. The results indicated that corn supply is elastic in the short-run and inelastic in the long-run, which indicates that corn growers are less sensitive to price changes. And it was found that the supply of corn increases by (0.14, 0.19, 0.27) when the cultivated areas and prices of the current and previous year increase by one unit in order, and the research concluded that the supply of corn depends on several factors, the most important of which are prices in the current and previous year and the areas planted with the crop and to a lesser extent on the amount of rain And the production of corn in the previous year and the technological factor and other factors despite their positive impact on the production of the crop. The study recommends adopting policies that focus on non-price factors as a means to stabilize and increase corn production.
