- Theendospermdevelopsintonucleartypeafterfecundation.Therateofcow'soestrumfecundationisonekeyfactorofcattle'sbreedingrate.Egghatchabilitywasaffectedsignificantlybyirradiationbuttherewasnosignificantdifferenceineggslaidperfemale,fecundationeggsasincr...
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