. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. EGG PRODUCTION. 101 It may be of interest to note that the difference in average winter produc- tion of these groups of half sisters is closely related to average date of first egg. Thus, the average date of first egg of the daughters of female No. 9420 was October 26; of female No. 8652, November 5; of female No. 8418, November 17; and of female No. 8185, December 12. Thus, of 4 females mated with a single male, 2 were inbred and 2 were unrelated to the male. The offspring of one inbred female were good
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. EGG PRODUCTION. 101 It may be of interest to note that the difference in average winter produc- tion of these groups of half sisters is closely related to average date of first egg. Thus, the average date of first egg of the daughters of female No. 9420 was October 26; of female No. 8652, November 5; of female No. 8418, November 17; and of female No. 8185, December 12. Thus, of 4 females mated with a single male, 2 were inbred and 2 were unrelated to the male. The offspring of one inbred female were good layers, while those of the other were relatively poor. The offspring of one unrelated female were good layers, and of the other relatively poor. The results of inbreeding, therefore, must be judged by the quaUty of the offspring. If it is good, utilize those particular inbred matings. If not good, try other inbred matings. n-^. Description of Figure. — The line of descent of two inbred families. A pair of'diver- gent lines extend from the back of each bird whose pedigree is known, one going to the father, the other to the mother, and ending on the under side. From this figure the various inter-relationships may be made out. Thus 8147's sire is 5240 and his dam 6404. The sire of 5240 is 619, who is also the grandsire of 6404 as well as the sire of 2564 and 3617; 619 is therefore the great, great grandsire of the daughters of 8147, through some lines of descent, but only the great grandsire through others. No. 3617 is equally a half great, great uncle, grandsire and great grandsire of 8652'8 daughters. The birds with backs free of lines are foundation stock of unknown ancestry. The inbred Unes of descent are indicated by the shaded Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricul
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