1921.] Size ov Egg in Relation to Average Production. 



09 



to which the size of eggs over the whole year is related to 

 winter jHoduction. The results are given in Table IV. 



The relation between the total annual egg production and 

 the size of egi;" is shown in Table V. 



Table V. — Average Egg Pro<hirJiou in R'^lafion to Size of Egg. 

 (r fotip. rcrcentmjr of 



Xo. 



[f ^-'.ni'^- 



Xn. nf r.inh. 



. / vci'dAjc Production. 



2iul Grrule 



151- 



to 160 



12 



155 



8-6 



1 () I 



„ 170 



18 



164 



25-6 



!71 



,, 180 



18 



176 



14-3 



181 



190 



36 



183 



24-6 



101 



,, 200 



30 



191 



19-7 



201 



210 



48 



205 



24-7 



211 



., 220 



12 



217 



20-2 



221 



230 



6 



220 



:^0-0 



Over 230 



18 



235 



32-6 



The percentages of production as given in Table I indicate 

 that, bv relection and efficient management, a steady output 

 of egg:- can be maintained throughout the entire year. While 

 the maximum is attained during the spring cycle (February- 

 j\[ay) , the variations at other periods are less than might have 

 been expected. It will be noticed that Leghorns did not 

 compare favourably with Wyandottes, Rhode Island Reds and 

 Plymouth Rocks, a matter of surprise, considering that Leg- 

 horns are non-sitters, whereas the others are usually sitters 

 during the fifth, sixth and seventh periods. 



Table II is worthy of study. It will be noticed that while, 

 there are considerable variations in accordance with the 

 season, yet the variations seem to follow a consistent rule. 

 The proportion of eggs failing to reach market standards is 

 considerable. In this respect the Rhode Island Reds show 

 the most marked improvement from the first period. 



The graphs show that size of egg increases with greater 

 production, although not in relative proportion, during the 

 earlier periods of laying, and that during the later periods, 

 when production declines, the size of the egg is maintained. 



It is further shown that all breeds lay smaller eggs in the 

 first two periods, and that the increase therefore takes place 

 after the first eight wrecks. 



From Table IV it would appear that, with the exception 

 of the two pens which produced no eggs in the first and 

 second i)eriods, and gave the lowest arniual averages of second 

 grade eggs, there is no affinity between winter laying and the 

 percentage of second grade eggs. The eleven pens of 

 Wyandottes which laid an average of 5.1 eggs in the first 

 and second periods, gave over the whole vear an average of 



