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The livestock system
Sources and utilization of labor
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25 percent alfalfa amount average per farm bushels butterfat output butterfat prices calves cash expenses cent gross combination of livestock cropping system dairy and hog dairy cattle dairy cows dairy enterprise dairy farms dual-purpose herds efficiency factors factors of production farm income farmers farms Over 25 farms studied Feed and pasture feed fed gross income high-profit hog enterprise hog farms hog prices hog production increase Iowa Agr Iowa dairy-hog farms litter of pigs livestock systems management returns milk cows Net operating income Northeastern Iowa farms Number of farms number of hogs number of milk oats one-third output per cow Percent fed poultry enterprises pound butterfat pound of butterfat Pounds hogs pounds of hogs price ratio price relationships red clover regression curves returns per $100 roughage shown in fig silage small grain sold Soybeans strictly dairy herds Total acres Total cash total feed units variation yields