sity achieved by the firms which affects its costs, not the total density of 

 the area. 



II. Technical Coefficients in Broiler Assembly 



Location of Broiler Growing Units 



1. Supply Plane 



A model was developed that assumes a circular broiler supply area 

 surrounding a center at which are located all facilities associated with 

 the broiler industry. The birds are grown on farms uniformly dispersed 

 over the supply area. The road network servicing these farms forms a 

 uniformly spaced pattern of straight spokes radiating from the center 

 with lateral roads, concave to the center, connecting these main roads. 



The basic physical characteristics of the model are shown in Figure 

 1 for a production density of 5,000 pounds of live broilers per square 

 mile per year. ^ A set of six model firms ranging in size from 4.15 million 

 pounds per year to 69.16 million pounds per year were established, and 

 are listed in Table 1. The six supply bands drawn in Figure 1 are of un- 

 equal widths because the sizes of these assembly firms were set to agree 

 exactly with the sizes of six of the firms used in the processing plant 

 report. Each of the six supply bands drawn in Figure 1 shows the size of 

 the supply area added when moving from one size of firm to the next 

 larger size. Thus, the supply band designated I is the supply area for 

 Firm A. The supply band designated II is the supply area added to the 

 supply area of Firm A to make up the whole supply area for Firm B. 



Each of the supply bands indicated in Figure 1 is considered to be 

 a separate entity in that each band will produce during some time period 

 a specified quantity of poultry. Table 1 shows these quantities on a year- 

 ly and daily basis. Band I on each collection day (5 days per week gen- 

 erally) yields 4,800 broilers of 3.5 pounds each, Band II on each collec- 

 tion day yields 9,600 broilers, and so on. Each of the supply bands has 

 the quantity of poultry ready for collection on a daily basis as indicated 

 in Table 1. As an example. Firm C has to assemble 28,800 birds a day 

 over its whole supply area. But it is specified that Firm C has to pick up 

 these birds from three separate locations: 4,800 from Band 1, 9,600 from 

 Band II, and 14,400 from Band III. Figure 1 must be visualized as a set 

 of six superimposed concentric discs, each disc being a separate model 

 firm and showing that each firm must collect from each supply band 

 included within its supply area. 



2. Impound Points 



Poultry is picked up each work day from each band into which the 

 size of the firm permits it to go. For instance. Firm C will not assemble 

 beyond Band III. Inside each band the poultry ready to be collected 

 each day is "impounded" at one point. This means that birds for any one 

 day's pickup are not scattered around in small flocks, but are located 

 in one flock or impound point. The number of birds located at the im- 



1 Further described in Appendix C along with the 1,000 and 25,000 pound density 

 levels. 



8 



