Effect of rice distillers’ by-product on feed intake and growth performance
of crossbred pigs fed mixtures of taro silage (Colocacia esculenta) and
rice bran
Nouphone Manivanh, T R Preston* and Le Duc Ngoan**
Souphanouvong University
(SU, Animal department.
Luang Prabang, Lao PDR
nouphone2007@yahoo.com
*Finca
Ecológica, TOSOLY, UTA (Colombia)
AA #48, Socorro, Santander, Colombia
**Hue
University of Agriculture & Forestry
102 Phung Hung, Hue City, Viet Nam
Abstract
A growth trial was
conducted with 16 cross-bred pigs with
average
23.4 kg mean initial live
weight in a Randomized Complete Block
Design (RCBD), with four replications of four treatments,
with one pig in each
pen. The treatments were
rice distillers’ residue
(RD) at 0, 10, 20 and 30
percent of the
diet DM in combination with Taro silage (Leaves + stems) mixed with rice bran
(proportions of rice bran and Taro silage
were59:40, 39:50, 24:55 and 10:59 (DM basis).
Feed intake and live weight gain were increased and
feed conversion improved as the percentage of rice distillers’ residue in the
diet was increased (Table 1; Figures 1-4).
It is concluded that either the biological value of the protein in rice
distiller's residue is superior to that in Taro silage, or that the rice
distiller's residue provides other nutrients or growth factors (eg: probiotics)
that promote better growth rate and feed conversion.
Key words:
Biological value, probiotics
Table 1.
Effect of rice distillers’
by-product on growth and feed
conversion of growing pigs fed taro silage and rice bran |
|
|
RD0 |
RD10 |
RD20 |
RD30 |
SEM |
Prob. |
|
Feed intake, kg/day |
1445 |
154 |
1356 |
1346 |
58 |
0.34 |
|
Initial LW, kg |
24.2 |
23.4 |
24.1 |
22.1 |
1.52 |
0.75 |
|
Final LW, kg |
47.1b |
48.8ab |
54.5ab |
58a |
2.2 |
0.02 |
|
ADG, g/day |
288b |
295b |
374a |
451a |
32 |
0.011 |
|
DM feed conversion |
4.90 |
4.81 |
4.02 |
3.22 |
0.47 |
0.09 |
|
Back fat, cm |
2.4 |
2.7 |
3.2 |
3.1 |
0.306 |
0.36 |
ab
Mean values
within rows with different superscript letters are different at P<0.05
|
 |
 |
| Figure 1.
Growth curves of pigs fed
different proportions of rice distillers’ residue (RD) with taro
silage and rice bran |
Figure 2.
Mean values for live weight
gain ofpigs fed different proportions of rice distillers’ residue
(RD) with taro silage and rice bran |
 |
 |
| Figure 3.
DM intake of pigs fed different proportions of rice distillers’
residue (RD) with taro silage and rice bran |
Figure 4.
Mean values for DM feed conversion for pigs fed different
proportions of rice distillers’ residue (RD) with taro silage and
rice bran |