Lactina, a
mixture of Streptococcus thermophiles, E. faecium, L. bulgaricus, L. acidophilus, L. helveticus and
L. plantarum, supplemented both to sow and piglet diets, increased complement activity in piglets at
5 days of age compared with a control group, while the addition of Lactina to sows only or to piglets
only did not produce any significant effects [32].