. A study of selections for the variation and inheritance of the size, shape and color of hens' eggs ... 1 76 81 86 91 96 101 Pig. 22. variation of shape, by weekly averages, of eggs produced by dam fortwo years and by progeny during early pullet production The heavy horizontal line in each division represents the character of the parent egg incubated; theleavy curve represents the production of the chick hatched; the light curve represents the productionjf the progeny of the chick. The dotted lines indicate that no eggs were produced during the periods which;hey cover The color character has
. A study of selections for the variation and inheritance of the size, shape and color of hens' eggs ... 1 76 81 86 91 96 101 Pig. 22. variation of shape, by weekly averages, of eggs produced by dam fortwo years and by progeny during early pullet production The heavy horizontal line in each division represents the character of the parent egg incubated; theleavy curve represents the production of the chick hatched; the light curve represents the productionjf the progeny of the chick. The dotted lines indicate that no eggs were produced during the periods which;hey cover The color character has a much higher coefficient of variability, as mayi be observed from figures 24 and 25. The pullets included in figure 24were all of the brown-egg type, but in figure 25 both brown-egg and white-3gg types are shown. In these figures there seems to be a tendency forithe type of egg produced by the original pullet hatched, and her lateroft spring, to resemble the original egg incubated. The writer can explainthe negative or practically zero correlation for the color character in the 248 Earl W. Benjamin. Fig. 23. shadow photographic record of relation between shape of egg incu-bated AND SHAPE OF EGGS PRODUCED BY THE RESULTANT CHICK Each row of progeny production shows twelve eggs, which were selected at regular intervals during therespective years production. All eggs were photographed each year, but only twelve eggs for each yearcould be represented in this group Study of Selections for Size, Shape, and Color of Hens Eggs 249 data previously reviewed, only by the high coefficient of variability andthe probability that many abnormal eggs are incubated instead of thenormal type for the respective dam. in 17 - 15- 13- 11- 9- 7 - 5- 3- 1 1 - , f TT1 P* £»*» •oft w //*r> */>o r IW man =ODH ^— V- 2&. P* fa <M oa 00 17- 15- 13- 11- 9- 7- 5- 3- *■ 1 - ^ \ 9/t/ i i / 1 y V ■n ft. f- 1 r ^ y \ i 1 | i ± s i ^ 3 V V z& on* *T ^ w -\ h K i V 3
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1920
