;4(ttc6^c<^tcc^ Sc/ne ;4^^m 



in swine feeding tests 



By DONALD M. KINSMAN 

 Assistant to the Superintendent of Farms 



THE PAYROLL oi the Common- 

 wealth does not show it, but 

 antibiotics are working for the 

 State. A number ot studies are now 

 being conducted on the University 

 Farm to check work performed at 

 other stations and to test various 

 levels of feeding. New substances 

 are being tested in the hope of gain- 

 ing additional experience and in- 

 formation concerning these "mir- 

 acle drugs." 



Since World W'ar II, much re- 

 search work on the animal nutri- 



tional value of many antibiotics has 

 been carried on. The antibiotics 

 primarily studied were penicillin, 

 ameomycin, streptomycin, terra- 

 mycin, and Ijacitracin. A decided 

 growth stimidus and increased 

 thriftiness were demonstrated Avhen 

 nonruminants (poidtry and swine 

 in particular) were fed antibiotic- 

 reinforced feeds compared Avith 

 a control group fed the same ra- 

 tion without the antibiotic. Fur- 

 ther research was concerned \s'\\\\ 

 feeding ruminants (cattle and 



Miss Marilea Papalia, University senior honor student in Animal Husbandry, implants a baci- 

 tracin pellet in a suckling pig held by Mr. Philip James. This is one of several antibiotic trials 

 and experiments being conducted at the University. Photo by John H. Vondcll 



12 



