FARM ANIMALS 61 



may have been accidental, but there undoubtedly was correla- 

 tion between type and prolificacy. In other words, gilts that 

 are selected according to the proper standard or those that 

 are the best individuals from the standpoint of type seem also 

 to produce the largest litters. 



"Another illustration of this same point is brought out in 

 Figs. 9 and 10. These show seven Chester White gilts when 



FIG. 8. Type vs. prolificacy. Poland China gilt No. 3. 



they were approximately one year old, together with their 

 litters. One of these litters was sired by a Berkshire boar, and 

 the rest were all sired by a Chester White boar. These gilts 

 were also placed in accordance with the mentioned standard 

 of excellence. Nos. 1, 2, 3 and 4, gilts shown in Fig. 9, 

 farrowed a total of 35 pigs and raised practically all of them; 

 while Nos. 5, 6 and 7, three gilts shown in Fig. 10, farrowed a 

 total of 11 pigs, and four of these were farrowed dead. Nos. 

 1, 2, 3 and 4 (Fig. 9) and two of the gilts in Fig. 10 were all 

 litter mates. One of the pigs in Fig. 10 was from another 

 litter and from an unprolific strain, and she farrowed only one 



