8 REA­SONS WHY VAC­CINES AREN’T A PRAC­TI­CAL OP­TION FOR BLOCK FLOCKS

NZ Lifestyle Block - - Your Poultry -

• Most of the vac­cines need to be stored in liq­uid ni­tro­gen con­tain­ers un­til thawed for use.

• There is a freeze-dried prod­uct which can be stored in the fridge but this may be less ef­fec­tive.

• The vac­cine is usu­ally in 1000dose vials.

• The vac­cine must be mixed with a dilu­ent and once mixed it must be used within two hours.

• Vac­cines must be used an one­day-old chicks be­fore any con­tact with other poul­try is made.

• The vac­cine is ad­min­is­tered at 0.2ml in the skin on the neck.

• All com­mer­cially-bred lay­ing pul­lets (Hy­line and Shaver Browns) are vac­ci­nated at one­day-old be­fore they leave the hatch­ery.

• Chicks which have been vac­ci­nated (and this ap­plies to all vac­ci­nated chicks bought from com­mer­cial hatch­eries) must be kept away from other poul­try or pos­si­ble con­tam­i­na­tion from dust or feather dan­der from older poul­try for a min­i­mum pe­riod of two weeks and prefer­ably six weeks, to al­low im­mu­nity to de­velop.

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