The invention provides a unit package for use in connection with a system for supplying liquid vaccine composition to an apparatus for substantially simultaneously debeaking and vaccinating poultry chicks. The package comprises a compartmentalized container the compartments of which containPP(a) a plurality of liquid diluent supply bottles containing sterile diluent for rehydrating dehydrated vaccine, PP(b) a transfer spike assembly comprising a cover unit sealed with a tear-away cover and containing a transfer spike suitable for providing sterile flow means from a liquid diluent supply bottle to a bottle containing dehydrated vaccine andPP(c) a drip chamber-tubing-clamp assembly suitable for sterile transfer of liquid vaccine from a liquid supply bottle to the liquid injecting means of an apparatus for substantially simultaneously debeaking and vaccinating poultry chicks.
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