Judging from the pictures that calf is older than he looks. Giving him milk now could cause diarrhea from lactose intolerance. Work him up slowly on a good feed and good hay. Deworming probably wouldn’t hurt either.
Just repeating what I was told by the Merial representative when the drug first came on market. I questioned it because we rotational graze.
Edit to add: on the label under “Environmental Hazards “ it states “not for use in cattle managed in feedlots or under intensive rotational grazing...
It’s because in those situations the manure is concentrated in small areas. The drug is eliminated in the feces. In an extensive pasture situation the manure is spread out. The solution to pollution is dilution.
From the First Defense Tri-Shield label:
"Blue dye is non-digestible serving as a tracker through the system to ensure calf received treatment. First fecal stool after administration will be blue in color."
I've had to do this many times, supplementing calves out on pasture while on dam, for multiple reasons, to salvage the long-term value of the calf. While they do become better bovine citizens, they tend to slack off on performance after a few months unless they have access to creep. Good...
Not available in the US. Studies have shown that there is no significant reduction in clinical disease with the use of the vaccine but the lesions heal more quickly in vaccinated animals and there is less hide damage. They could demonstrate no change in rate of gain between the groups.
Look up these guys and then you have. Angus bull Spur Franchise of Garton
Sire of this popular Red Angus bull, 9...
Some countries such as the Netherlands prohibit slaughtering cows in late gestation. Perhaps the OP lives in one of those countries. New Jersey had a bill put together earlier this year to prohibit the slaughter of any pregnant cow. Not sure if it passed.