446 



Pork Production 



of some one animal. The result is that it emphasizes 

 and intensifies the influence of a single individual, or of 

 the group of individuals just back of him in the pedigree. 



A good example of line-breeding frequently seen is 

 represented in the pedigree of D. B's Dutchess 76842, 

 as shown in the previous diagram. In this case a son 

 of Ohio Chief was mated with a granddaughter of Ohio 

 Chief. 



In the accompanying diagram is the pedigree of Baron 

 Duke IV 33446, which shows a little closer line-breeding 

 than the first pedigree. In this instance a sow was mated 

 to her own grand-sire. The relationship is even more 

 close than this, for Handsome Duke was a half brother 

 to Longfellow, and Dora Lee w^s a full sister. 



' Longfellow 

 16835 



Baron Lee IV 

 33446 



Ladt Lee VII 

 25107 



Model Dttee ' 



LONOFELLOW 



16835 



Emma Lee 



Handsome 

 Duke 



Dora Lee 



The question of whether in-breeding is safe and desirable 

 must be judged by the results. Experience has shown 



