You have treated them for 8-way, but what about Haemophilus?
Heres a link that might explain the congested lungs (Pasturella) and maybe why it was the younger animals if they hadn't been vaccinated? The photosensitivy would just be a result of the fever / pneumonia / sunburn
http://www.anslab.iastate.edu/Class/AnS426/transfer%20skaar/References%20and%20Materials%20For%20Beef/Cow%20Calf/Haemophilus.htm
Heres a link that might explain the congested lungs (Pasturella) and maybe why it was the younger animals if they hadn't been vaccinated? The photosensitivy would just be a result of the fever / pneumonia / sunburn
http://www.anslab.iastate.edu/Class/AnS426/transfer%20skaar/References%20and%20Materials%20For%20Beef/Cow%20Calf/Haemophilus.htm
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