356 



Pork Production 



(d) Charge for vaccination $ 0.75 



(e) Interest, depreciation, and insurance on gen- 



eral equipment for four years 24.00 



(/) Six service fees 12.00 



(0) Labor for four years 50.00 



Total feed plus other costs of six litters at wean- 

 ing time 229.38 



IX. Value of sow for pork 31.40 



Total cost each weaned litter produced by mature 

 sow raising two litters every year after matur- 

 ity 33.00 



The total cost of each wearied pig would, there- 

 fore, be as follows : 



1. With 5 pigs raised to the litter 6.60 



2. " 6 " " " " " 5.50 



3. " 7 " """"...... 4.71 



1 " Q '* *' <( " " A 1O 



A summarized statement of the cost of the pigs at 

 weaning time when produced according to these four 

 systems of management is shown in Table CLXIX. 



TABLE CLXIX. SHOWING ENTIRE COST OF THE INDIVIDUAL 

 PIG AT WEANING TIME 



SYSTEM OF MANAGEMENT 



NUMBER OF PIGS RAISED TO THE LITTER 



45678 



A. When produced by gilts 

 only 



$7.73 



$5.15 



$4.42 



B. When produced by mature 

 sows kept until 4 yr. old, 

 one litter annually . . . 



7.93 



6.61 



5.66 



$4.96 



C. When produced by mature 

 sows kept until 4 yr. old, 

 three litters every two years 

 after maturity 



7.13 



5.94 



5.07 



4.46 



D. When produced by mature 

 sows kept until 4 yr. old, 

 two litters every year after 

 maturity 



6.60 



5.50 



4.71 



4.12 



