Faster horses said:
Ranchy, keep a close watch on those other calves. There is a strong
possiblity they could get scours too.
Haymakers potion is a good one. His mention of putting anitbiotics
in the mouth works better than a scour bolus. Think about it, if
a calf is dehydrated, how is it going to dissolve a bolus? When we had
all the trouble we had, we used Gentocin down the throat. I think
2 cc by mouth and 1 cc in the muscle, or maybe it was the other way
around.
Gentamycin does work -- but it's also prohibited in food producing animals due to a withdrawal of 18 months -- and yes that is 18 months.
I dislike KaoPec because of the fact that it's meant to bind with toxins and bacteria in the gut -- and I feel it also binds with any oral antibiotics. BismuKote or Pepto is along the lines of asprin and so does not have that problem.
I've had success with Spectam (spectinomycin) orally at 10-20cc's once or twice a day depending what I feel that particular calf warrants.
If I recall correctly tetracyclines bind with milk and so I wouldn't use those orally with milk replacer if you find yourself in that situation.
I've also had good results with Nuflor or oxytet200 systemically (IM/SC) and SMZ/TMP tablets orally. I feel my best treatment results come from systemic PLUS oral treatment -- two routes of antibiotic therapy.
Most important thing is keeping a calf hydrated -- that will kill them faster than anything. Dehydration does not become apparent until a calf has lost 6% of its body weight, if I remember the numbers correctly, so I'd assume any scouring calf is dehydrated.
Severe diarrhea also results in loss of important electrolytes, vitamins, minerals, etc. I tend to give an automatic shot of Bo-Se, Vit B Complex, and Vit A & D to any scouring calves. It is vital that the calf does not slip into a state of acidosis which can easily come about through loss of body fluids. Corrected by sodium bicarbonate aka baking soda. Also sodium chloride as salt is neccessary for the calf, as is dextrose.
Rehydration for a calf by IV can be composed of a 1000mL bottle of sodium chloride/saline solution or Lactated Ringers with 5-10cc's of dextrose added. Can go SubQ if neccessary.
I
really like Purina's electrolyte solution for oral use -- it includes probiotics as well -- sure gives them a boost.
I'd certainly agree with what FH said about watching the other calves -- any time I've had ONE calf on a nurse cow come down with scours, the entire set ended up with it. Very easy to transfer as they move from teat to teat.
Good luck with the others.