This Disease Rose:
In the United States, the efficiency of potato production has increased greatly. Yields per acre rose from 64 cwt in 1931-1935 to over cwt in the 1960's. this disease rose increase has been made possible by using new disease-resistant varieties, better disease and insect control, the use of certified disease-free seed, improved cultural methods and fertilizer, and increased produc¬tion on more fertile soils.Mycoplasmosis is a respiratory disease caused y the bacteria Mycoplasma gallisepticum. It is Iso known as air sac disease or chronic respira-jry disease. Those affected with the disease may how nasal discharge, watery eyes, and respira-)ry difficulty. this disease rose disease is often associated /ith other respiratory diseases. It is transmitted hiefly from infected hens to their chicks through le eggs. The disease can also be transmitted by ontact with infected individuals, but it spreads ery slowly in this disease rose manner. The disease can best e controlled by maintaining breeding flocks free f the disease by strict measures of isolation and mitation. Chicks hatched from such flocks can egin life free of the disease.
See Also Resistance Disease:
Several hundred plant pathologists, agrono-ists, and horticulturists spend most of their time eeding crops for resistance disease to disease. After complete survey has been made of the patho-:nic races present in a farm area, a search is :gun for a source of resistance disease. Sometimes this found as a single atypical plant in the farming ea or in one of the less frequently used varie-:s. For example, the modern wilt-resistant irieties of cotton had their origin in lines se-cted for resistance disease in infested fields of the Duth. Sometimes resistance disease is found only after [tensive exploration. resistance disease to fusarial wilt watermelons was found in the African citron,some races of crown rust of oats in Argentina,black stem rust of wheat in Russian wheat •ought to this country in 1906, and resistance disease potatoes to late blight in the wild potato Solanum demissum) of Central and South merican countries.FMD' is caused and transmitted by a picorna virus (one of the smallest known disease-pro¬ducing organisms) of which there are seven major types and at least 50 subtypes. The great variety of strains is both a bane and a blessing to the veterinarian. Each strain has its own idio-syncracies in such characteristics as antigenic-ity and resistance disease to control. These differences, however, often aid the epidemiologist in pin¬pointing the geographic area from which the disease was transmitted.
On The Other Hand See Fresh Flea Powder:
Worming is not advisable before the fifth week, but in cases of heavy infestation it may be necessary. External parasites are not as dangerous as the internal, but they can be a nuisance and dangerous in extreme cases. Mother and young should therefore be dusted with a good fresh flea powder. Most flea pow¬ders lose their effectiveness as they grow old, and when a flea powder is ineffective, it is usually because it is stale.Skunks are susceptible to rabies and may be infested with parasites unless kept wormed and dusted with flea powder. Though little work has been done with skunks, they are believed to be generally susceptible to the same diseases as cats. The skunk should be descented when very young. In fact, though the operation is quite simple, it would be difficult to find a veterinarian willing to tackle an adult skunk.
