Care and Feeding of Sow and Litter 79 



A Plan of Ear-Notching Adapted to a Large Herd 



A third plan of marking is shown in Fig. 7. By this 

 scheme the number of the litter is determined by the 

 position of the notch on the ear. The outer rim of the 

 right ear is divided into three areas numbered 1, 2, 3 

 from the point of the ear back. A notch in the forward 

 third would stand for litter number 1, a notch in the 

 middle would be litter number 2, while one well back in 

 area number 3 would be litter number 3. The outer left ear 

 is divided into two areas, numbered 4 and 5 from front to 

 back. A notch in the forward rim of the left ear would, 

 therefore, be litter number 4, while one in area number 



