G. Dusel et al., EFFECTS OF SACCHAROMYCES-CEREVISIAE ON FA TTENING PIGS .1. RESULTS OFTHE FATTENING INVESTIGATION, Zuchtungskunde, 66(5), 1994, pp. 383-394
In a trial the effect of the yeast Levucell SB20 (Saccharomyces cerevi
siae, Strain SB087 I-107; Fa. Santel) on the fattening and slaughterin
g performance of pigs was investigated. 48 pigs (DL x Pi) were fattene
d (30-105 kg) according to the regulations of the fattening test. The
three groups consisted of piglets from 8 litters, whereby 3 male castr
ates and 3 females were taken from each litter. Each of the three grou
ps was finally formed by selecting at random 16 piglets under the cond
ition that each litter is represented by 1 male castrate and 1 female
(2 pigs/pen). The three groups received basically the same diet but to
the feed of group I 50 g/t (1 x 10(9) CFU/kg feed) and to the feed of
group II 100 g/t (2 x 10(9) CFU/kg feed) Levucell SB20 were added. Du
ring the first part of the fattening period (30-50 kg) there were no e
vident differences in the daily live weight gain and feed conversion r
ate in all three groups. In the second part (50-75 kg) the control gro
up had a daily live weight gain of 913 g which is 10.5 g more than gro
up I and 47.5 g more than group II. However, the feed conversion rates
of the groups I and II were slightly better than those of the control
group. In the last part of the fattening period (75-105 kg) group II
(2 x 10(9) CFU/kg feed) had a daily live weight gain of 809 g and a fe
ed conversion rate of 3.29. These results were significantly better th
an those of the control group (704 g; 3.50) and group I (743 g; 3.62).
The additional feeding of saccharomyces cerevisiae over the entire fa
ttening period had no significant advantages compared with the control
group. However, in groups I and II which received Levucell SB20 sligh
tly positive effects could be observed in the daily live weight gain a
nd in the feed conversion rate.