Table 1. General Minimum and Maximum Constraints Specified for Poultry Rations 



Table 2. General Minimum and Maximum Constraints Specified for Dairy, Beef and Swine Rations 



a/ 



b/ 



c/ 



Net energy for lactating cows. 

 Net energy for gain. 

 Metabolizable energy for swine. 



estimates were used for the amount of fossil fuel energy utilized in the 

 production and processing of these feed ingredients and additional estimates 

 were made of the energy required in transporting the ingredients (see Appendix 

 Tables 1 and 2). Throughout, no energy allocation was assigned for the 

 manufacture of fixed inputs such as tractors, trucks and processing equipment. 

 At the farm level, the production estimates reflect only the operational or 

 variable farm inputs such as gasoline, the energy utilized in irrigation, and the 

 BTU's required to produce and apply fertilizer. Where processing was con- 

 sidered, only the energy required to perform a certain task (e.g., dehydration) 

 was counted. The estimates cited in Appendix Tables 1 and 2 should be 

 construed as preliminary, first estimates that require refinement in future 

 analysis. 



