Safety of the attenuated anticoccidial vaccine ‘Paracox’ in broiler chickens isolated from extraneous coccidial infection

Bafundo, K.W. and Donovan, D.J., 1988. Predicting effects of coccidial lesions in broilers.Poultry,4, 36–37

Biggs, P.M., 1982. The world of poultry disease.Avian Pathology,11, 281–300

Bushell, A.C., 1992. Control of coccidiosis using a live, attenuated vaccine: a report of three trials in ‘label rouge’ chickens.Proceedings XIX World's Poultry Congress, Amsterdam, Supplement, 45–49

Bushell, A.C., Gobbi, L. and Williams, R.B., 1990. The use of a live attenuated vaccine to control coccidiosis in chickens.VIII Conferencia Europea de Avicultura, Barcelona, Memoria 2, 579–582

Bushell, A.C., Shirley, M.W. and Bushell, J.E., 1992. The use of an attenuated coccidiosis vaccine in replacement layers.Zootecnica International,15(5), 58–62

Bushell, J.E., Harding, R.B., Evans, N.A. and Shirley, M.W., 1989. Coccidiosis control in chickens using a live attenuated vaccine. II. Field trial results. In: P. Yvoré (ed.),Coccidia and Intestinal Coccidiomorphs, (INRA, Paris), pp. 689–692

Conway, D.P., McKenzie, M.E. and Dayton, A.D., 1990. Relationship of coccidal lesion scores and weight gain in infections ofEimeria acervulina, E. maxima andE. tenella in broilers.Avian Pathology,19, 489–496

Cuckler, A.C., Malanga, C.M. and Ott, W.H., 1956. The antiparasitic activity of nicarbazin.Poultry Science,35, 98–109

Govoni, S., Maestrini, N., Gobbi, L. and Tonelli, A., 1987. Prove di campo di un vaccino attenuato contro le coccidiosi del pollo.Atti della Società Italiana delle Scienze Veterinarie,41, 1187–1192

Johnson, J. and Reid, W.M., 1970. Anticoccidial drugs: lesion scoring techniques in battery and floor-pen experiments with chickens.Experimental Parasitology,28, 30–36

Long, P.L., Johnson, J. and Wyatt, R.D., 1980.Eimeria tenella: clinical effects in partially immune and susceptible chickens.Poultry Science,59, 2221–2224

Lucas, J.M.S., 1958. The effect of nicarbazin on growth rate, sexual maturity, egg production, fertility and hatchability.Journal of Comparative Pathology and Therapeutics,68, 300–307

Ruff, M.D., 1991. An overview of control measures for coccidiosis — present and future.Proceedings of the Seventh International Poultry Breeders' Conference, Auchincruive, 29–38. [The author's name is misspelt “Duff”.]

Williams, R.B., 1992.The development, efficacy and epidemiological aspects of Paracox, a new coccidiosis vaccine for chickens, (Pitman-Moore Europe, Harefield, UK), 16 pp.