. Principles and practice of poultry culture . Poultry. APPLICATION OF PRINCIPLES OF BREEDING 5 11. Fig. 518. Model head of Single-Combed Leghorn male (Brown Leghorn)^ It was especially observed in breeding the Partridge Cochin, in which the Standard requires very distinct pencilings in all sections in the female, that while these pencilings could not be produced typically in the male, and the red appeared only as a defect on the black of the breast and body, the son of a well-penciled female, when mated with females of Standard type, would usually produce daughters similarly well penciled. On
. Principles and practice of poultry culture . Poultry. APPLICATION OF PRINCIPLES OF BREEDING 5 11. Fig. 518. Model head of Single-Combed Leghorn male (Brown Leghorn)^ It was especially observed in breeding the Partridge Cochin, in which the Standard requires very distinct pencilings in all sections in the female, that while these pencilings could not be produced typically in the male, and the red appeared only as a defect on the black of the breast and body, the son of a well-penciled female, when mated with females of Standard type, would usually produce daughters similarly well penciled. On the other hand, from a female with poor penciling (colors distributed but pattern not arranged) a male might be produced (to all appearances like the other) which, mated with the same females, would give daughters distinctly inferior in penciling. Similar observations were made in regard to the production of the desired type of males. The sexes having the same colors in different patterns, the color of a male indicated only the general shade or tone of color of his daughters, the color of a female only the general color tone of her sons; and unless the breeder knew the details of color of the sire of a female or the dam of a male, he could form no idea of what their influence would be on the markings of their offspring of the opposite sex. Thus it was demonstrated empirically in the experience of many breeders, most of whom were not versed in the science of evolution, that, in breed- ing poultry in which the sexes differ in color, the most important thing to know about a bird is the color of its parents. For a long time the common practice in mating Partridge Co- chins and Brown Leghorns, which were the black-red varieties most popular with fanciers, was to make intermediate matings, using a male with a slight tendency to a mixture of red in black sections with both dark and light females in the same pen. This sometimes gives good birds of both sexes, — occasionally a large
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Keywords: ., bookauthorrobinson, bookcentury1900, bookdecade1910, bookyear1912
