Gm. Rogers et al., USING THE STANDARDIZED PERFORMANCE ANALYSIS PROGRAM (SPA) TO EVALUATEBEEF COW HERD PERFORMANCE, Agri-Practice, 15(7), 1994, pp. 32-37
This paper presents an example of the Standardized Performance Analysi
s Program (SPA). Specifically, SPA analyses for a Flint Hills ranch in
Kansas were used to show how data from 2 years could be used to evalu
ate the production and financial performance of a beef cow herd. It sh
ould be noted that this study took place over a 2-year period, and alt
erations in factors could have perceivably changed the outcome.