Ekonometryczna analiza wzrostu produkcji mlecznej na tle programu doskonalenia bydła rasy nizinnej czerwono-białej
AbstractIn this paper an attempt was made to estimate the results of an increase in Red-and White cattle breed production by using the methods of correlation, regression, analysis of time series data and Markov chains. Following results were obtained: an insufficient determinant value for $ of cows, often used as index of production purpose, no influence of concentration, measured by the number of cows, on the level of unit costs of milk production, a very high seasonal variation in unit costs of milk production/nearly half of the average cost/, a high vatiation in milk yield in cows calving in spring-summer eeason, a proper but not yet stabilized age at first calving, observed in the period 1964-1970 in production farm. Analysis of time series data indirates a slight but permanent increase in cow-herd size and milk yield /but a little lower than that indicated In official plans for a total of cow-population in Poland/,and an irregular fat percent increase which excludes predicting the future value of this trait. A high significance of autocorrelation of disturbance term, observed in the trend of milk and fat yields, causes a decrease in reliability of prognosis.
|Other language title versions||Econometric analysis of milk production increase in red-and-white cattle breed|
|Publisher||Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie, MNiSW |
|Publishing place (Publisher address)||Kraków|
|Book series /Journal (in case of Journal special issue)||Zeszyty Naukowe Uniwersytetu Rolniczego im. Hugona Kołłątaja w Krakowie. Rozprawy, ISSN 1899-3486, (0 pkt)|
|Publication size in sheets||3.45|
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