2d0 



ANNUAL REPORT OF THE 



Off. Doc. 



find out how important tliat is, we keep our best birds for a period 

 of several years. We are going to call attention to some of these 

 distribution records of hens whose records are known for three years, 

 to show how easy it is for a person to kill the best hens he has on his 

 farm and never be any the wiser unless he knows their individual 

 records. 



DISTRIBUTION OF EGG PRODUCTION BY ONE YEAR PERIODS 

 AS AN INDICATION OP PROLIFICACY. THREE CALENDAR YEAR 

 RECORDS OP 169 S. C. WHITE LEGHORN HENS AT CORNELL UNI- 

 VERSITY. 



Groups. 



a 



II 



I 



II 



Ill 



IV 



V 



VI 



VII 



VIII 



IX 



X 



XI 



Total for all groups, 



Table III. Tables showing the distribution of egg production for 

 three years in groups to show when they made their largest, medium 

 and lowest production. 



These are the records, shown in the case of 169 hens that lived for 

 three years and were trap-nested. This does not take into considera- 

 tion any of the hens that died i nthat time; it means all the hens that 

 lived for that length of time that were in this experiment. We 

 grouped these according to whether they laid the most eggs the first 

 year, the second year or the third year. You see if we have the three 

 year records of 169 hens, they must have laid the most or the least 

 or the medium production of eggs the first j^ear or the second or third 

 year or else they must have laid the same number two or more years, 

 hence we have grouped them up that way and we find that out of the 

 169 hens 47% or 80 out of the lot laid the most the first year, less 

 the second and least the third ; that the order of the production was 

 highest in the first year and then a declining scale for the other two 

 years and they laid 389 eggs in the three years time and stood third 

 in the list of groups. The next group reversed the order. There 

 were only 4.79% but their order was the least the first year, more 

 the second and most the third, but laying all told only 314 eggs in 

 the three years time. They were poor producers even though they 

 increased each year for three years never laying an average of more 

 than 15 eggs in any year. Tlien we had a group of 12 and a fraction 

 per cent, that laid most the first, least the second and came up in the 

 third and laid 382 eggs in three years, only 7 less than the group we 



