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I have a yearling heifer that went off feed about 2 days ago. She doesn't look sick but just wants to lay around the barn. What should I look for? Suggested treatment? At what point do I call the vet?

Last week I lost a cow that seemed to just waste away. She was only 2 1/2 years old and had tested positive two months ago as being about 5 months preg. 2 years ago I lost a cow that the vet figured was selinium deficient. I provided mineral blocks w/ Si and she didn't seem interested. From the...

How long can embryos be frozen b/4 they start to decrease in effectiveness. What is the average success rate in fresh embryos versus frozen.

1. Can someone suggest a good book on the subject of E.T.? 2. Can the procedure be done by AI techs or do I need to get my vet to perform? 3. I breed Angus but have some other breeds (Charolais & Hereford). Can I use them as recepient cows and get the AAA to recognize the calves? 4. When is the...