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The use of an attenuated coccidiosis vaccine in replacement layers

, : The use of an attenuated coccidiosis vaccine in replacement layers. Zootecnica International ( 5): 58-62

The results of 4 field trials in replacement layer pullets are reported briefly. The vaccine incorporated 8 precocious lines lines of the 7 pathogenic species of Eimeria. Two lines of E. maxima were used because of the antigenic diversity of this species. A single dose (a mixture of 3000 oocysts) was given in drinking water when the birds were about 7 days old: deep litter is required to allow recycling of oocysts to ensure solid immunity.

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