Phytogene feed additives (phytobiotics) are plant origin compounds used in
animal nutrition in order to improve their productivity by improving the
production performance of animals, feed properties and the quality of food of
animal origin. These additives stimulate animal growth by using their natural
and physiological potentials and mechanisms providing conditions for the
realization of the genetically projected production volumes. Data on the use
of phytobiotics as growth stimulators are incomplete and often very
contradictory, especially those related to their impact on the health and
performance of weaned pigs. Given the relevance and importance of these
issues the feeding trial was organized by the group-control system. The
experiment lasted for 40 days and it was divided into two phases of 20 days
each. Trial was conducted on 24 piglets, F1 generation of Swedish Landrace
and Pietrain, weaned from sows at the age of 35 days. Tests were carried out
on piglets, with an average body weight of 8.61?1.59 kg, which were subjected
to one of the two feeding treatments immediately after weaning. The control
group was fed with a mixture without growth promoters, while the experimental
group received a diet containing preparation of phytobiotic (Enviva EO 101,
Danisco Animal Nutrition) in the amount recommended by the manufacturer (0.1
kg/t). The mixtures for piglets nutrition were formulated in accordance with
the recommendations of the NRC (1998), and AEC (1993) and they met the
nutritional requirements completely. During the experiment, there was no
disturbance of health and/or the manifestation of clinical signs of disease.
The control group, fed with the diet without added growth stimulators,
achieved body weight (25.32?6.31 kg), average daily gain (0.42?0.12 kg),
consumption (0.89 kg) and feed conversion (2.119 ) normal for a given race,
age and housing conditions. The use of preparation of phytobiotics as growth
promoters, led to better production results in regard to the control group,
which was based on higher body weight (27.19?4.77 kg), higher average daily
gain (0.46?0.09 kg) and better feed conversion (2.043). The use of
phytobiotic, as an alternative option in growth stimulation of weaned pigs,
has its nutritive, medical and economic justification.
An increase in intracellular free Ca2+ associated with serum-free growth stimulation of Swiss 3T3 fibroblasts by epidermal growth factor in the presence of bradykinin.