BULLETIN 295 



ABSTRACTS OF PAPERS PUBLISHED BY THE STA- 

 TION IN 1920 BUT NOT INCLUDED IN THE 



BULLETINS. 



A complete list of all the publications issued by and from 

 the Station in 1920 is given on pages x to xi of the introduc- 

 tion to this Report. The following pages contain abstracts of 

 the papers issued during the year that are not included in the 

 Bulletins or Official Inspections for the year. 



INHERITANCE IN CROSSES OF DAIRY AND BEEF' 

 BREEDS OF CATTLE. 



II. On the Transmission of Milk Yield to the First 

 Generation.* 



The purpose of this paper is to give briefly the facts dis- 

 covered on the inheritance of milk yield by the use of the cross- 

 bred herd. 



If the substance of these pages is recapitulated it is found, 

 that Crossbred No. 1 resembles her low producing parent y.y 

 times as closely as she does the high producing parent. The 

 other eleven crossbreds resemble the high producing line of milk: 

 production from 1.5 to 18.0 times as closely as they do the low 

 line of milk production. If this paralleling of the high line pro- 

 duction is averaged it is found that they resemble the high line 

 of production 4.76 times as closely as they do the low line. These 

 facts argue for the transmission of milk production by factors 

 which show partial dominance. It would not seem that they 

 argued for increased vigor of heterosis only, because of the 

 case of Crossbred No. 1, where the low line milk yield was> 

 definitely transmitted instead of the high yield. In fact it would 

 appear that this Crossbred is more likely to be a segregate of 



*This is an abstract from a paper by John W. Gowen having the same- 

 title and published in the Journal of Heredity, Vol. XI, No. 10. 



