Cod liver oil for laying pullets. - CAB Direct
Experiments were run for 3 years to test the effect of cod liver oil on confined hens, on birds allowed sunshine but no range, and on birds on blue grass range. Increased egg production, fertility and hatchability were obtained from the use of cod liver oil in each case, particularly marked with confined birds, but hardly appreciable with birds on blue grass range except in a hard winter spell....
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