Longest pregnancy

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dcara

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I have a 6yo RA 2 weeks past due now and she hasn't even started to bag or swell yet. Although she usually doesn't bag or show until about 2-3 days before calving. The 3 others in her AI group AI'd to Cheyene calved wihin a day of the due date. All were 85lb-87lb calves. So I'm starting to worry about calving diffaculty given the calf is still growing inside her. Whats the longest you've seen an AI'ed cow go past the calving date.
 
Longest I've persoanlly seen was 18 days. Contrary to the OWT, it was a heifer calf.
 
I know your talking about cows, but I bought a jennett (female donkey) sevaral years ago. I had her 13 months and 3 days, when she gave birth. There wasn't a jack within 5 miles from her. Had a jersey nurse cow go 14 days over her due date. She was AI'ed. Naturally had a bull calf.
 
290 days is the longest gestation length I've had. I would lean towards her being rebred if she is two weeks past and not bagging down yet.
 

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