Effect of the administration of copper, vitamins A and D and bovine colostrum on performances, antioxidant and micronutrients status and microbiome in lactating piglets on a commercial farm

•Bovine colostrum increased piglet's weight until the post-weaning period and favored beneficial bacteria in the intestinal microbiota;•Supplements with vitamins A, D and cooper to sows increased birth weight;•Only vitamin D supplementation to piglets improved their status at weaning.