Hello, I'm attempting to determine the contribution of the beef cattle industry and wanted to make sure that I'm on the right track. In our study we're breaking the US into 7 regions and analyzing the contribution of beef cattle production and processing in each. We are looking at 2014 and have data for all 50 states. We first compared IMPLAN's sector 11 output to 2014 values published by NASS for value of production. IMPLAN values were significantly different for most states so we modified each region to match NASS's value of production. Following your instructions for contribution analysis, I've customized commodity production to balance to one and set the local use ratio to zero for sector 11. (Let me know if this is correct.) As far as processing, I'm not really sure what to do. I assume that beef cattle processing would fall under sectors 89, 90, and 91. To begin, I suppose I'll need to determine the output attributed to beef for each of those sectors, correct? If so, what exactly am I looking for in finding a beef processing output value? For instance, I've found a way to estimate state-level values for lbs of dressed beef coming out of slaughter houses. Would I multiply that times a sales margin to estimate processing output? Then, if I can come up with processing output values for beef, what would be the best way to separate the animal processing sectors in IMPLAN? A post from several years ago said that the industry production could be modified by summing the coefficients for sectors 11 and 14, then using that value for sector 11 and zeroing out sector 14 for each processing sector. Is this still the recommended method?
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