This study investigated the effect of a synergistic blend of free and buffered
organic acid (FMP) on the performance of piglets born to sows supplemented with
a blend of short- and medium-chain organic acids (SGG) during the late gestation
and lactation period. A total of 150 multiparous sows (n = 50/treatment,
Landrace × Yorkshire) were blocked (2.4 parity) and assigned to 1 of 3
dietary treatments: CON - corn-soybean meal-based basal diet, SGG-Low −
CON+ 1.5 kg/ton SGG, and SGG-High − CON + 3kg/ton SGG. During weaning,
600 piglets (6.72 ± 0.5kg) which weaned from sows supplemented with 3
levels of SGG were allocated to 2 weaner diets (Control and FMP - 3kg/ton)
following 3 × 2 factorial arrangement. Supplemental effects on
performance were measured at d0–d21 and d 21–42, and the entire
period. Pigs fed with FMP and born to sows supplemented with SGG-High gained
more weight and ate more (
p
< 0.05) compared with those
in the CON group in both phases, and with SGG-Low in the second phase. Over the
entire post-weaning period, piglets born to sows supplemented with SGG-Low and
SGG-High had a higher average daily gain (ADG) and body weight (BW)
(
p
< 0.05). Regardless of sow treatment, pigs fed
with an FMP diet had higher ADG (
p
< 0.001), BW
(
p
= 0.045), and a lower feed conversion ratio
(
p
= 0.033). Also, feeding FMP diets reduced the fecal
Escherichia coli
and
Clostridium
perfringens
counts at d42. The current study indicates that sows
fed SGG supplement had a positive carry-over effect on the post-weaning growth
rate, and FMP supplement enhances the growth performance and reduced the number
of
C. perfringens
and
E. coli
. Thus, the
application of 3 kg/ton of SGG in sows’ diet and subsequent feeding of
piglets with FMP would be an effective strategy to improve growth rate and
reduce pathogenic bacteria in post-weaned piglets.