Wyniki pierwszego sezonu rozrodczego owiec.
1986
Olechnowicz J. | Gut A.
The first season of reproduction was observed in Polish Merino and Wielkopolska pure breed ewes and in crossbred ewes: Polish Merino x East Friesian and Wielkopolska x Polish Merino. The first oestrus of the crossbred Polish Merino x East Friesian ewes at 210 days of life and at 46.1 kg of body weight was observed. Their season of reproduction was the longest with the highest number of oestrum. The crossbreds of Wielkopolska x Polish Merino had intermediate sexual activity when compared with the parental breeds.
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