HdS 



ANNUAL REPORT OF THE 



Off. Doc. 



out of 169. Now the balance of them, the other 42, laid when they 

 were 241 to 270 days old; and so on down to the smaller birds in 

 the groups. The next column shows the average age when the 

 first egg was laid, 176 days, 199 days, 222 days; or an average 

 of 208 days old for that group of 75% of the birds. Do you get 

 the point, that out of 169 birds, 75% of them, f of the birds, had 

 begun to lay when they were an average of 208 days old. Now the 

 average production for these birds the earliest to begin to lay for 

 the first year, for the second year, for the third year and for the 

 three years combined, is as follows: The first group, 173 eggs the 

 first year, 135 the second year, 126 the third year, or a total of 

 434 eggs in three years. Those that began a month later, laid in 

 the order of 157 eggs the first year, 133 eggs the second year, 116 

 eggs the third year, a total of 407. Those that began a month later, 

 that is, two months later than the first group, laid 140, 121, 106 

 eggs per year respectively, a total of 367 eggs. Now the 75% of 

 these birds averaged to lay 150, 128, 112 per year, or a total of 

 391 eggs in three years. Let us take all these birds that did not 

 begin to lay until after that age, the older groups, and you see what 

 a sudden dropping off in production there is of that group, that did 

 not begin to lay until they were an average of 255 days old; they 

 laid in the order of 108, 121 and 108 eggs. Those that were in this 

 later group, laid a month later; 93 the first year, 94 the second 

 year and 93 the third year, and so on down. We have an average 

 total of 370 eggs for the early producers as against 306 for the 

 late. In other words, we find that the birds that laid by the time 

 they were 8 months old, as a rule, are likely to be high producers, 

 whereas those that do not lay until after that time are likely to 

 be low producers. 



THE INTENSITY OF EGG PRODUCTION AS AN INDICATION OF 



PROLIFICACY.* 



^eg Band No. 



2 



"a 



be 

 M 



01 



o 



B697. 

 7518, 

 7880. 

 6675, 

 7700. 

 6708, 

 7675, 

 563:?, 

 7897. 

 7455, 

 7469. 

 7668. 

 786n, 

 7504, 

 7658, 



561 

 493 

 45t 

 439 

 42« 

 426 

 420 

 406 

 400 

 S50 

 S4« 

 321 

 2S< 

 226 

 163 



♦Fifteen Single Comb White Leghorns at Cornell University selected from sixty-three whose 

 Recorrts are known for three years or more. 



