we did blood test. he was anemic. we gave him two and a half cc B complex twice a day to increase appetite, and red cell. we also soaked feed pellets in water to make a mush. squirted it in his mouth to force feed him. five days later doing great and eating on his own.
Dr. Cary gave me a cocktail to protect RBCs when my deer were anemic with parasites. It included B vitamins and I believe dextrmethosome. If need I can look up or we can reach out to Doc Cary.