. A study of selections for the variation and inheritance of the size, shape and color of hens' eggs. U 16 21 26 31 36 41 46 51 S6 61 66 71 76 81 86 .91 96 101 Fig. 19. variation of sizb (weight in grams), by weekly averages, of eggs pro-duced BT dam for two years AND BY PROGENY DURING EARLY PULLET PRODUCTION The heavy horizontal line in each division represents the character of the parent egg incubated; theheavy curve represents the production of the chick hatched; the light curve represents the productionof the progeny of the chick. The dotted lines indicate that no eggs were produced during
. A study of selections for the variation and inheritance of the size, shape and color of hens' eggs. U 16 21 26 31 36 41 46 51 S6 61 66 71 76 81 86 .91 96 101 Fig. 19. variation of sizb (weight in grams), by weekly averages, of eggs pro-duced BT dam for two years AND BY PROGENY DURING EARLY PULLET PRODUCTION The heavy horizontal line in each division represents the character of the parent egg incubated; theheavy curve represents the production of the chick hatched; the light curve represents the productionof the progeny of the chick. The dotted lines indicate that no eggs were produced during the periodswhich they cover Pullets 8882F and 8939F, illustrated in figure 18, are from small eggs,but pullet 8872F is from a large egg. It is evident that the tendencyis for a pullet to produce eggs of the same size as the egg from whichshe was hatched. Sometimes small eggs are obtained from hens that Study of Selections for Size, Shape, and Color of Hens Eggs 245. Fig. 20. shadow photographic record of relation between size of egg incubatedand size of eggs produced by the resultant chick Each row of progeny production shows twelve eggs, which were selected at regular intervals duringthe respective years production. All eggs were photographed each year, but only twelve eggs for eachyear could be represented in this group 246 Eakl W. Benjamin ordinarily lay large eggs, and vice versa; this probably accounts for the lowcorrelation in studies of mixed flocks, while the study of separate matingsshows more definite results. The heavy curve for line 3916F in figure 19represents the record for the bird whose early pullet daily record is shownas 8882F in figure 18. The photographic record, figure 20, shows the relative sizes of eggsproduced by hne 8224F, one of the largest lines, and by line 3916F, oneof the smallest hues. The difficulty of observing the fine differences insize, except by careful measurements, is seen from this figure. Underline 3916F^
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1920
