A second iron injection to newborn piglets. Is it a good idea?

In scientific trials, a second iron injection for suckling piglets at 7-8 days of age has been observed to improve post-weaning growth performance and haemoglobin levels, and affect the faecal microbiome. That was one of the outcomes of a trial run by researchers from various universities in the United States, in cooperation with the Agricultural Research Service (ARS), part of the US Department of Agriculture (USDA) and iron supplier Pharmacosmos.  The researchers also wrote that “