The elimination of the β-Mannan fiber by Hemicell® primarily
improves energy utilization. To a lesser extent, it also improves protein
utilization. The matrix shown in Table 1 summarizes the nutrient values added by
Hemicell®:
Table 1 – Hemicell® Matrix Values
| Nutrient |
Increase in Complete Diet |
Hemicell Dry (0.05%) |
Hemicell Liquid (.0125%) |
| ME (Kcal/Kg) |
120 |
240,000 |
960,000 |
| ME (Kcal/Lb) |
55 |
110,000 |
440,000 |
| Methionine (%) |
0.00604 |
12.08 |
48.32 |
| Met+Cys (%) |
0.01051 |
21.02 |
84.08 |
| Lysine (%) |
0.01530 |
30.60 |
122.40 |
| Threonine (%) |
0.01724 |
34.48 |
137.92 |
| Tryptophan (%) |
0.00227 |
4.54 |
18.16 |
At current feed prices, the formulation of Hemicell® according to the above
matrix will reduce the net cost of broiler feed by about $4/ton provided sufficient
energy is contained in the feed and depending on ingredients used. Simply put,
when Hemicell® is formulated into a diet, about 2.5% of added fat is removed
and replaced with corn. Therefore, the diet needs to contain more than 3% added
fat to realize the full economic value of Hemicell®. This corresponds to an ME
of about 3100 Kcal/kg or 1406 Kcal/lb. If less energy is spared by Hemicell®,
an improvement in performance can be anticipated.
Several broiler pen trials have confirmed the above broiler matrix values.
In one such recently completed pen trial conducted at Southern Poultry Research
in Athens, GA, broilers were grown to 42 days of age. The trial comprised three
treatments; 1. a positive control - providing a typical industry broiler formulation
(3 feeds; CP-22.0%/19.4%/17.5%; ME Kcal/kg- 3080/3140/3200); 2. a negative control -
formulated using the Hemicell® matrix values to achieve the nutrient
values of the positive control but from which Hemicell® was excluded
(ME Kcal/kg- 2960/3020/3080) ; and 3. a Hemicell® treatment - the negative control
as described above plus Hemicell®. A summary of the results of this trial are provided
in Table 2 below.
Table 2 – Impact of Hemicell® on 42-day broiler performance (SPR 100404).
| Treatment |
Mortality (%) |
Body weight uniformity (CV)1 |
Average live weight (lbs) |
Feed Conversion |
| 1 |
Positive Control |
2.9%a |
11.7% b |
5.282 a |
1.827 b |
| 2 |
Negative Control |
3.4% a |
14.1% a |
5.182 a |
1.894 a |
| 3 |
Negative control plus Hemicell® |
4.6% a |
9.7% c |
5.364 a |
1.826 b |
Note 1: All birds in each pen were individually weighed to derive a coefficient of variation for
every pen. The average of the pen CVs for each treatment are presented in this column.
Treatment 3 provided live performance statistically and numerically equivalent
to Treatment 1, confirming the Hemicell® matrix values. Also, please note the
statistically significant improvement in body weight uniformity.