Abstract
Extract
Increasing awareness of the threat from salmonellosis to animal and human health, and recognition of implications to the farming economy and meat marketing industry in New Zealand, have emphasized the need for effective measures for controlling this disease. As pointed out by Beckett (Citation1967), reduction in stocking rates or use of chemotherapeutic agents is often impracticable or ineffective. Other recent publications, drawing attention to the possible role of vaccination in controlling salmonellosis, have dealt with fundamental aspects of immunity (Jonas Citation1967 a; Citationb) and with evaluation of an experimental vaccine under field conditions (Wallace and Murch, Citation1967).