Dependable immunity against hog cholera... and in another important way! Certainly, ROVAC Hog Cholera Vaccine protects against hog cholera losses. But here's another important kind of protection it also provides at the same time. Because ROVAC is of rabbit- onain, the chance of introducing other swine diseases into your herd, as with vaccines of swine^orfgin, is eliminated. Consider these other important points: • A single injection of ROVAC in healthy pigs provides at least two years' immunity • No serum is required with ROVAC except in case of exposed hogs • ROVAC can be used with serum if immediate immunity is required • ROVAC saves time, money, labor — and pigs. For free literature write AMEBICAN CYANAMID COMPANY, FARM AND HOME DIVISION, NEW YORK 20, N. Y, Don't gamble .., Vaccinate with HO© CHOLERA VACCINE "This Little Pig Had None" TUNNY how true old story-book rhymes can be. Really one pig stays home for each one that goes, to market. All the work on good pig-raising and management centers around the problem of having less "stay at home" pigs and getting more to the market. One of the reasons for the "stay at homes" is they have not received all the protection they should against diseases. Look what has happened in the last two years in prevention of polio in children. It has been said that not a single case of paralytic polio has developed when three full shots have been given. In like manner we can do a much better job of protecting pigs against disease losses. For instance, hog cholera is still the most dangerous disease in the piggery. We have had the scientific knowledge of how to combat cholera for a full generation. We have done a good job of protecting pigs against cholera when forced by a wild-fire outbreak. But it has been easy to lag and forget .to vaccinate until another sad experience took all the profits for a few years back. Vaccination Is Big Business During the 12-month period ending last June, some 26 million doses of hog cholera vaccine were made and sold. In addition some 20 million cc of hog cholera virus was made with serum to match, If we forget about the amount exported, this would be enough for about 46 million pigs. That is a big job well done. But if there were about 92 million pigs born that year half of them "had none", as the rhyme says, of the precious, protective shots. Yet that is very good when compared with protection against other diseases. Cholera isn't the only cause of losses. Several others can make the "little pig stay home." l b Other Diseases Need Attention Swine erysipelas is one that often makes the-pig small and unprofitable, even if it does not kill outright. To protect against erysipelas some 12 million doses of bacterin and 95K$ million cc of serum were made, This had to be shared with 9« million turkeys who get the same disease. So not more than 12 million of the 92 million pigs had protection 1 against erysipelas. That is 80 million pigs "had none". When it comes to enteritis and other bowel troubles that plague little pigs, and big ones too, the situation is even much worse. Of the bacterins made for the protection against some of the intestinal troubles less than a million doses were ^ i JH at means that ver X ^w pigs indeed had this valuable protection. Not all losses are due to infections' that can be prevented by vaccination, banitation, nutrition and medication when necessary are extremely important. Most mportant is early .treatment when something goes wrong.
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