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Original Articles

Oestrogen concentration in the peripheral plasma of maturing pullets

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Pages 569-572 | Received 13 Feb 1974, Published online: 08 Nov 2007
 

Synopsis

The concentrations of total steroid oestrogen, measured as oestradiol‐17β, in the peripheral plasma of four maturing pullets were determined by radioimmunoassay. The concentrations fluctuated but showed an overall increase to reach maximum values some 2 to 3 weeks before the first egg was laid.

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