Coughing cows 100 degrees

[JackAngus]

Keep some cattle north of Amarillo. Went last week and noticed a cow and a calf (not hers) with a cough. Spent a week out there , they didn’t seem to get any worse. I had switched thier feed to mature alfalfa (late bud ). I wanted to know what you all think may be causing the coughing ? Feed change, heat (100 degrees almost ) ? And what vaccines are you using for lungs ? Thanks . I am going back out there this weekend.

 

[Jeanne - Simme Valley]

Could the hay/environment be dusty?
I vaccinate everything with BoviShield5L5HB - covers IBR, BVD, PI3, BRSV plus the Lepto's. This is a Modified Live Vaccine, so there are some precautions for pregnant cows.

 

[JackAngus]

Dusty very possible. Hay was baled very dry and very mature. I couldn’t pass up the price. No weeds no stickers.

 

[Allenw]

Why aren't they on grass this time of year?

 

[elkwc]

I know that area. What are they running on? Are you so dry you are having to feed?