^!CJ (•'rotcth and Dcrdujiitient of Breedf^ (iiul Cruises of P'ujs 



Tlie differences between authorities may be due partly to variations 

 in method but are largely affected by differences in the size and age of 

 the animals. The liver of the pig at birth is much larger in proportion 

 (3 per cent, of liver) than it is at a year old (1 per cent, of liver). It will 

 be noticed too that the proportion of the stomach and intestine contents 

 increases from about 2-5 per cent, at birth to about 1 1 per cent, at 3 

 months old and then decreases again to about 2-5 per cent, at a year old. 



Table V has been calculated from Table lY in the same way that 

 Table 11 has been jjrepared from Table I. Averages from less than 

 5 individuals are shown in italic type. Tlic four breeds from which the 

 average at the base of tiie table has been calculated are as follows: Large 

 White, Large Black, Berkshire and Middle White. The breed average 

 only has been considered and not the number of individuals in each breed. 



Table. VI has been prepared from Table IV in the same way as Table 1 1 1 

 has been calculated from Table I. Averages from less than 5 indiNaduals 

 are shown in italic type. The average at the base of the table refers to 

 the same four breeds as in the preceding table. 



Table VII has been compiled from Table VI by calculating the weight 

 of the carcase or part as a percentage of the live weight. Averages from 

 less than 5 individuals are shown in italic type. The average at the base 

 refers to the same four breeds as stated in Table V. 



Table VIII has been (uilculated from the averages of the four breeds 

 given at the base of Table VI. The method used is described in the text 

 (see p. 402). 



Table IX has been prepared from Table 111 by calculating the weights 

 at various ages as percentages of the weights at 1 1 months old. The single 

 pig classes at 9 months are shown as a percentage of the single pig classes 

 at 11 months. Figures calculated from less than 10 individuals on either 

 side are shown in italic type. 



Table X has been compiled from Table VI by calculating the weights 

 at various ages as percentages of the weight at 11 months old. Figures 

 calculated from less than 5 individuals on either side are shown in italic 

 type. 



Table XI has been prepared from the Live Class records of tlie Show 

 direct. All doubtful and second cross animals have been ehminated. 

 Averages calculated from loss than 10 individuals are shown in italic 

 type. 



Table XII has been calculated from Table XI in the same way that 

 Table II has been calculated from Table 1. Figures from less than 10 

 individuals are shown in italic type. 



