THE BREEDING OF CHICKENS 



123 



l)iit the color is ulready going' to pieces, rresumahly it' there 

 were large enough numbers and selection were made for lioth 

 color and vigor, both might be maintained. 



It ajjpears that the diflicnlty in sncli cases is not in line 

 breeding as a practice, but in the skill and judgment in 

 selection. As Afarshalh ])utsit, " We may say of the cases (of 

 line breeding) that have resulted unfavorably, that we should 

 look not to the kinshi]) of blood but the kinship of defect" 

 for the difficulty. Thus we ma>' also say of the successes of 

 line breeding that they ai'c attributable " not to the kinship of 



Fig 54 



Traii-iicsts. Mudelcd i>n tlic plan nl' the I'uram; iirst. Dm 

 (ijiuns into wire receptacle for keeping eggs until collected for 

 ((.'curtesy of Kansas Agricultural Experiment Station ) 



r in top 

 the (lay. 



blood but the kinshij) of superiority. . . . Stiecess or 

 failure with inbreeding is clearly dejx'ndent upon selection." 

 \Mien vigor and hatching power are the first l)asis of selectimi, 

 less will be heard of the e\'ils of line breeding. 



Pedigreeing. — By pedigreeing is meant keeping a complete 

 breeding record. It involves the recording by leg-band 

 number (or other accurate me;(ns of identification) of tlie 

 male and female mated together, the recording on each egg 



Breeding farm Animals 



