. Manual of farm animals; a practical guide to the choosing, breeding, and keep of horses, cattle, sheep, and swine. Animal industry; Horses; Cattle; Sheep; Swine. 188 MANUAL OF FARM ANIMALS of the permanent teeth and their method of wearing are con- sidered the most accurate means of estimating age among cattle, yet they_ are not absolutely accurate nor are they as dependable as in the horse. Teeth in cattle vary in much the same manner as in the horse. See page 8 for variation in teeth among horses. As in the horse, there are two sets of teeth,—first, the temporary or milk teeth, and later t
. Manual of farm animals; a practical guide to the choosing, breeding, and keep of horses, cattle, sheep, and swine. Animal industry; Horses; Cattle; Sheep; Swine. 188 MANUAL OF FARM ANIMALS of the permanent teeth and their method of wearing are con- sidered the most accurate means of estimating age among cattle, yet they_ are not absolutely accurate nor are they as dependable as in the horse. Teeth in cattle vary in much the same manner as in the horse. See page 8 for variation in teeth among horses. As in the horse, there are two sets of teeth,—first, the temporary or milk teeth, and later the perma- nent teeth. The latter differ from the former in their greater size. This replacement of the temporary by the permanent is made neces- sary by the increased size of the jaw as the animal grows older. The calf is often born with the central pair of milk teeth, and the remaining pairs appear within the first month after birth. The calf is provided with four pairs of in- cisor teeth. There are incisors in the lower jaw only, the upper being provided with a cartilaginous pad. When the animal is approxi- mately eighteen months of age, the middle pair of milk teeth is replaced by permanent ones, which are fully twice as broad as the milk teeth, hence easily recognized (Fig. 67). ' The intervals between the appearance of the succeeding pairs varies much according to the conditions, but can be stated as approximately nine months, perhaps more rather than less. In general the age of the animal at the time. Fio. 67.—Cows' Teeth ar- BANGED ACCORDING TO Age. Lowest row represents a 15 months' old mouth, second row 18 months', third row 27 months', fourth row 36 months', fifth row 45 months', and the top row represents the teeth of a ten-year-old cow. — 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 w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthorses, booksubjectsh
