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The mode of action of antibiotics in chick nutrition. II. —the effect of penicillin in clean and stale premises
Author(s) -
Coates M. E.,
Davies M. K.,
Harrison G. F.,
Kon S. K.,
Porter J. W. G.
Publication year - 1955
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740060802
Subject(s) - penicillin , antibiotics , premises , food science , biology , microbiology and biotechnology , zoology , veterinary medicine , medicine , political science , law
Premises where chick growth had been suboptimal without penicillin in the diet were thoroughly cleaned and disinfected. The first few batches of chicks reared there after the disinfection grew well without penicillin, but growth deteriorated in subsequent batches and finally became indistinguishable from that in ‘stale’ premises. In field units that had previously housed other chicks, growth of new chicks was depressed in the absence of penicillin. In new field units on fresh ground chicks grew as well without as with the antibiotic, but two further batches of chicks showed a small increase in weight with penicillin even though the units had been disinfected and moved to fresh land.