. Breeding of farm animals. Livestock. ABORTION AND PREMATURE BIRTH 27I in cattle, it will be considered from the standpoint of the cow, although the suggestions apply to all farm animals. Avenue of infection.—The manner in which the infec- tion is carried from one animal to another, as well as the avenue by which the infection reaches the fetus, are very important factors from the standpoint of the control of the disease. The claim is made that the infection not only passes from animal to animal, but that man may carry it from one stable to another. However this may be, no doubt the most impo
. Breeding of farm animals. Livestock. ABORTION AND PREMATURE BIRTH 27I in cattle, it will be considered from the standpoint of the cow, although the suggestions apply to all farm animals. Avenue of infection.—The manner in which the infec- tion is carried from one animal to another, as well as the avenue by which the infection reaches the fetus, are very important factors from the standpoint of the control of the disease. The claim is made that the infection not only passes from animal to animal, but that man may carry it from one stable to another. However this may be, no doubt the most important conveyer is the male. A bull after serving a cow possessing the disease is likely to transmit it to all cows with which he subsequently comes in contact. The chief avenue of infection is the os uteri, and the most favorable time for invasion is thought to be during estrum. As this is the time at which copulation takes place the infection easily passes from the ex- posed bull into the uterus of the cow. Under favor- able conditions, possibly, the uterus may become in- p,^_ qi-tamworth sow -oakhill fancy" fected at the time of par- turition and inoculate the next fetus, causing abortion. There seems little opportunity for the uterus to become infected at any other time, as the sealed os uteri is no doubt impregnable to contagious abortion germs. Control of infectious abortion.—There is no sure and reliable method for preventing an animal from becoming infected with contagious abortion, no means of curing a pregnant animal having the infection in her uterine cavity and no means of definitely eradicating the disease. It is stated that carbolic acid, either fed in 4 per cent solution on grain, or given hypodermically in 2 per cent solution acts as a specific against abortion. The same claim is made for methylene blue. This is given in doses of from. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabili
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlivesto, bookyear1914
