190 STATE BOARD OF AGRICULTURE 



At least forty acres sufficiently remote from the animal husbandry 

 operations should be set aside for experimentation with animal dis- 

 eases. As rapidly as the finances of the Station permit, buildings should 

 be constructed and equipped to make the conduct of the research possi- 

 ble. The development of such a program should proceed consecutively 

 and as the oHivious needs warrant. There is no demand for a lavish ex- 

 penditure with a view to the early completion of an ideal establishment. 



Mr. Huddleson has been handicapped by lack of assistance and funds. 

 He has made progress, however, as his report demonstrates. 



Report of Research Associate I. F. Huddleson. 



During the past year my entire time has been devoted to the project 

 under Adams 3b, the study of bovine infectious abortion. 



The following problems are being investigated at the present time 

 many of which may project into the future. 



1. Educational. 



2. Diagnosis. 



(a) Clinical. 



(b) Serological tests. 



(c) Allergic tests. 



3. Carriers (Temjiorary and Permanent). 



(a) Conditions involved in establishing carriers, 

 ('b) Determination of carrier state. 



(c) Channels through which the organism is excreted from the 



body. 



(d) Habitat of organism in bodj'. 



(e) Destruction of carrier state. 



4. Channels of infection. 



5. Control. 



(a) Sanitation and isolation. 



(lb) Immunization. 

 G. Cultural Studies. 

 7. Swine abortion. 



1. Educational. 



There is now available sufficient information concerning infectious 

 abortion which, properly and intelligently applied, will control the 

 spread of the disease in the infected herd and prevent its entrance into 

 the non-infected herd. 



In order to make jtrogress in the control of infectious abortion it is. 

 necessary that certain available agencies make known to the breeder 

 and the veterinarian the truth about the disease and the proper pro- 

 cedures to apply. In other words an educational campaign should be 

 undertaken through all available sources. 



2. Diagnosis. 



The clinical studies are confined largely to observations in the ex- 

 perimental lierd, in the field and to i-eports. 



Although the serological tests (agglutination and complement fixa- 

 tion) have proved to be a reliable means for diagnosing infectious abor- 



