FIELD: poultry farming. SUBSTANCE: method involves introducing aqueous extract of acanthous eleutherococcus root into feed as biological additive during prelaying period, 20-25 days before laying, in an amount of 0.5 g of dry substance per 1 laying hen per day; feeding hens for 20 days. EFFECT: increased egg yield. 4 tbl
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Authors
Dates
1997-07-20—Published
1995-01-26—Filed