. Principles and practice of poultry culture . Poultry. APPLICATION OF PRINCIPLES OF BREEDING 533. Fig. 569. Black Sumatra Game cock. (Photo- graph by Graham) surface color. Buff and red varieties are especially prone to white in the hackles of the males, and the breeder of these varieties should always look for it there. In the black-white type and its modifications, and to a less extent in black varieties, the white faults in undercolor ap- pear. In most black varieties the undercolor is a very dark slate, but is sometimes a dull, or brown, black. In the black- white or gray color types whit
. Principles and practice of poultry culture . Poultry. APPLICATION OF PRINCIPLES OF BREEDING 533. Fig. 569. Black Sumatra Game cock. (Photo- graph by Graham) surface color. Buff and red varieties are especially prone to white in the hackles of the males, and the breeder of these varieties should always look for it there. In the black-white type and its modifications, and to a less extent in black varieties, the white faults in undercolor ap- pear. In most black varieties the undercolor is a very dark slate, but is sometimes a dull, or brown, black. In the black- white or gray color types white is necessarily somewhat prev- alent in undercolor, but with so much white in the surface its presence is often overlooked until neglect of it leads to weak- ening of the surface color. The breeder has always to guard against the troublesome white in the hackle and at the base of the tail. Where white and black are mixed, he detects it in the weakening of black. If he fails to notice that the black stripe in a hackle is broken across with white just under the surface, he soon finds chickens developing with weak striping on the surface. If he overlooks a little white at the base of the main tail feathers and sickles, he soon finds white ex- tending farther out on these feathers. In the ermine types, as in the red with black points, a light slate under- color, or a slate bar just under the surface, is favored by many breeders; and, as a rule, more or less black is found in the undercolor of birds of this type which have good black points. In gray-barred fowls strong, clear barring on the surface is preserved only by careful selection for barring in undercolor. It is not necessary that the barring in undercolor be as clear and the dark color as strong as in the surface color. Some breeders of Fig. 570, Black Sumatra Game hen Barred Plymouth Rocks tried for a (Photograph by Graham). Please note that these images are extracted from scanned page images that may have been digitally e
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Keywords: ., bookauthorrobinson, bookcentury1900, bookdecade1910, bookyear1912
