Sows. Twenty-four sows, originating from PL x
LWP sows mated with Du x Pi boar, were randomly
divided into four groups: group I (control) receiving the
feed consisting of non-modified soybean meal and corn,
group II receiving GM soybean meal and non-modified
corn, group III receiving non-modified soybean meal
and GM corn, and group IV receiving GM soybean meal
and GM corn. During the whole study the sows were
kept in individual pens, and their breeding conditions
and general diet composition were like in the fatteners.
However, some diet parameters differed from the
fattener diet, especially in terms of energy, protein, and
vitamin intake. The grower feed mixture for sows in the
low productive period contained 11.8 MJ ME, 132 g of
crude protein, 6.8 g of Lys, and 4.5 g of Met+Cys while
the feed mixture for the high productive period consisted
of 12.5 MJ EM, 162 g of crude protein, 8.2 g of Lys, and
5.5 g of Met+Cys. The diets used in the experiment
differed in the presence of the genetically modified or
non-modified soybean meal MON-40-30-2 (4% in the
low in sow grower and 14% in high in sow mixture) and
corn grain MON810 (5% and 8%, respectively).