Optimum length of raising time and the relation with business income of simmental-Ongole grade crossbred beef cattle fattening farm in wonosobo regency-central Java

Optimizing the length of raising time in cattle fattening business should be applied to increase farmers' income. a survey research was carried out to analyze the optimum raising duration and its relationship with income in the business of simmental - ongole grade crossbred (sog) beef cattle fattening. this research involved 50 farmers chosen purposively as respondents based on some specific criteria,i.e. the farmers had been experienced at least for 5 years,the business scale was 1 - 3 bulls and the cattle's live weight was around 250 - 350 kg. data were taken by cross section and time series for 3 months,covering respondents' identity,cattle business condition,business inputs,cattle's weight,input and output prices. the data were analyzed using combined data regression model. the optimum raising duration was calculated using profit function per time,while the inputs were converted into time function. all of the costs and incomes of business were calculated. the results showed that the optimum raising duration of sog beef cattle fattening was reached at the 1.5 months from the cattle aging 16.67 months old. the amount of the total cost,revenue and income in the optimum raising duration were idr 7,161,740.00; idr 7,797,100.00 and idr 635,350.00,respectively. the amount of the cost,revenue and income in the optimum raising duration per kg of cattle live weight,were idr 23,247.00; idr 25,157.00 and idr 1,910.00,respectively. © 2013 diponegoro university. all rights reserved.