BLACK ROCKS VACCINATIONS All chicks are vaccinated at 1 day old and for coccidiosis, mareks and I.B. with H120 but due to an influx of some very nasty continental strains of I.B. local conditions will determine the level of additional vaccinations necessary. Salmonella Vaccines in Black Rocks are out, there has been no recorded positive salmonella test anywhere in the country amongst Black Rocks. Their use is nothing more than a commercial due diligence exercise and causes nothing but suffering and cruelty