Abstract
The pan about the usage of antibiotics in chicken feed in different parts of the world, and rising customer demand for poultry products free of antibiotics has heightened the attention of poultry researchers and producers in identifying appropriate substitution to such alternatives. The present research was aimed to study the effects of dietary supplemented with Saccharomyces cerevisiae, probiotics and mixing of them (S. cerevisiae and probiotic) on growth performances, activity of the immunity organs (thymus and bursa of Fabricius) and hematological profile, a total of 60 one day old birds were randomly divided into 4 band (n=15) (T1-T4). T1 band (control), T2 provided with 3 g/kg of S. cerevisiae, T3 provided with 200g/1000L of water and T4 provided with mixing of S. cerevisiae and probiotic. body weight was measured at zero, 7, 14, 21, 28 and 35 days and represented highly significant at P<0.05 in T4 band in contrast to the last band, as well intestine weights and immunity organs weights in T2, T3 and T4 showed high significant variation at P<0.05 when compared with T1 (control band), in addition to the person correlation weights between T4 which showed height significant variation in intestinal weights with immunity organs and Bursa of Fabricius was highly significant with thymus gland, from our results we concluded that supplemented of chicken diet with S. cerevisiae and probiotic improved growth performance, immunity organs activity, hemoglobin concentration and packed cell volume.
Main Subjects
Highlights
Full Text
Introduction
While most of the commercial strains of broilers are characterized by a rapid rate of both growth and conversion, the expression of these bioactivities can be reach to the peak of their expression by the availability and the high efficiency of such an essential factor related to the intestinal tract of these broilers which translated by the high rate and high efficiency of both the digestion and the absorption (1,2) Antibiotics have been used to promote both the growth and control of the diseases in these broilers, however random and irrational usage of these antibiotic might cause a bacterial resistance, the dietary supplements are one of the important sources which, when added to the diet lead to an improvement-in the physical condition (3) and increasing body weight (4,5). S. cerevisiae are examples of these supplements (6-8). On the other side, Studies showed that Saccharomyces cerevisiae could be used as a substitute for improving the physical condition of the broilers as well as their immunity, specifically by improving the rate of digestion and the length of the villi (9-11). Both of these dietary supplements work directly on the Intestinal microflora by enhancing symbiosis through improving the proliferation of beneficial bacteria in the intestinal tract. Probiotics are another example of dietary supplements added to broilers food to enhance their nutritional value and maintain their gut health by increasing beneficial bacteria (12,13). These probiotics are also known for their role in boosting the immune system (14,15). Currently, the consumption of probiotics via food products are in high demand (16,17). the beneficial benefits of living probiotic cells in the gastrointestinal tract have been investigated (18-20), where the researchers have been focusing on the immediate consequences problems of the gastrointestinal tract (21).
Thus, the current work was designed to study the effects of dietary supplements with S. cerevisiae and probiotics, a correlation between the lymphatic organs and the digestive system within the groups, and their effects on growth performance and hematobiochemical test of broilers chicken in Mosul City.
Methods and materials
Ethical approve
At the University of Mosul, faculty of medicine, and based on the conical of ethics of animal extermination, the current work was accepted according to UM.VET.2022.021.
Experimental design
The experiment was conducted in the animal house of the College of Veterinary Medicine, University of Mosul, A total of 60 birds one day old age and mixed gender were used in the current work. They were gained from a private hatchery, and the main material was saccharomyces cerevisiae and probiotics. The birds were randomly divided into four groups. T1 as a control, T2 supplemented with 3 g/kg of saccharomyces cerevisiae, T3 supplemented with probiotic 200g/1000L of drinking water according to the manufacturer’s instructions and T4 supplemented with mixing of S. cerevisiae and probiotic. Throughout the experiment, food and water were provided ad libitum, and the Cobb Broiler management Guides recommendations for the environmental temperature program were followed.
Body weight
All broilers were wing-banded, and their body weights were determined-Randomly. broilers were assigned to remediation using individual broilers body weights after removing the lightest and heaviest ones, and chick's weights were taken at 0, 7, 14, 21, 28 and 35 on the last day of the experiment.
Somatic index
Furthermore, the immunity organs (Thymus and bursa of Fabricius) and intestine organs for each group were removed and weights during the 1st, 2nd, 3rd, 4th and 5th killing.
Collection of blood sample
Blood samples were collected at the 1st, 2nd, 3rd, 4th and 5th weeks of the experiment from the heart and wing veins according to the age of the birds. A total of 15 blood samples were collected from the treatment and control group into a clean and sterilized tube containing EDTA for measurement of blood hematology, including packed cell volume (PCV) and hemoglobin concentration (Hb) (22).
Statistical analysis
In order to determine the influences of S. cerevisiae and probiotics on hematobiochemical and growth performances of broilers in Mosul city, all results were statistically analyzed by using one-way ANOVA and T test at P<0.05 (23,24).
Results
Effects of S. cerevisiae, probiotic and their mixing on body weights
As shown in table 1, the effects of S. cerevisiae on BW during 7 and 14 and 21 and 28 and 35 days showed height significant variation at P<0.05 as well the T4 supplemented with a mixing (S. cerevisiae and probiotic) showed significant differences in contrast to the probiotic and control group.
Table 1: Effect of S. cerevisiae probiotic and mixing of them on bird’s body weight (kg) during 35 days
Groups |
0 days |
7 days |
14 days |
21 days |
28 days |
35 days |
Control |
39.40±1.35ab |
77.40±0.64d |
113.20±1.56c |
205.00±1.58d |
499.40±2.30c |
870.00±±1.58d |
S. cerevisiae |
38.20±1.01b |
86.80±0.90a |
139.00±1.58a |
286.60±2.51a |
57800±6.44a |
1160.00±1.58a |
Probiotic |
32.80±1.41c |
82.80±1.39b |
125.40±1.10b |
231.40±1.34c |
503.40±3.51c |
900.00±6.04c |
Mixed |
40.80±1.50a |
80.80±0.92c |
126.00±1.58b |
246.60±1.25b |
516.20±1.35b |
1040.00±1.58b |
*Indicates significant differences between the two treatments at P<0.05. NS indicates that there are no significant differences between the two treatments.
Effects of S. cerevisiae, probiotic and mixing on intestinal weights during the experimental periods
The effects of S. cerevisiae on intestine weights are presented in table 2, and the treated groups during the 2nd, 3rd, and 5th weeks showed highly significant variation when compared with the control group. As shown in table 3, the effects of probiotics on -intestinal weights represented significant height variation at 7 days during the experimental period-when compared with the control group. As represented in table 4 the effects of mixing S. cerevisiae and probiotics on the intestinal weight showed significant variation at 21 days in contrast to 35 days, while the 28 days represented a significant difference when compared with another group.
Table 2: Effects of S. cerevisiae on bird’s intestine weights (kg) during 35days
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
4.70 |
4.32 |
9.28 |
6.50 |
13.50 |
11.62 |
32.83 |
29.15 |
46.80 |
35.36 |
SD |
0.25 |
0.20 |
0.95 |
1.54 |
0.39 |
0.74 |
4.77 |
1.57 |
0.36 |
6.32 |
T |
2.102NS |
2.664** |
3.867NS |
1.270** |
3.130** |
|||||
Sig. |
0.103 |
0.05 |
0.018 |
0.273 |
0.035 |
*Indicates significant differences between the two treatments at P<0.05. NS indicates that there are no significant differences between the two treatments.
Table 3: effects of probiotic on intestine weights (kg)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
1.45 |
5.40 |
4.32 |
9.15 |
6.50 |
12.23 |
11.62 |
33.12 |
29.15 |
45.60 |
SD |
0.04 |
0.08 |
0.20 |
0.85 |
1.54 |
1.26 |
0.74 |
3.39 |
1.57 |
9.53 |
T |
8.86** |
2.610 NS |
0.721 NS |
1.842 NS |
1.551NS |
|||||
Sig. |
0.001 |
0.059 |
0.511 |
0.139 |
0.196 |
*Indicates significant differences between the two treatments at P<0.05. NS indicates that there are no significant differences between the two treatments.
Table 4: Effects of S. cerevisiae and probiotic on intestine weights (Kg)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
1.05 |
4.44 |
4.32 |
7.32 |
6.50 |
18.08 |
11.62 |
41.56 |
29.15 |
42.22 |
SD |
0.04 |
0.09 |
0.20 |
0.55 |
1.54 |
0.24 |
0.74 |
5.70 |
1.57 |
1.87 |
T |
1.021NS |
0.869NS |
14.328** |
3.636* |
1.803NS |
|||||
Sig. |
0.365 |
0.434 |
0.000 |
0.022 |
0.146 |
* Indicates that there are significant differences between the two treatments at P<0.05. ** Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Effects S. cerevisiae on immunity organs
The results in a table 5 showed significant height variation in the weight of immunity organs during 7, 14 and 35 days in contrast to weights of these organs at 21 and 28 that showed no significant differences in the bursa of Fabricius weights in contrast to the control group. The effects of S. cerevisiae on thymus weights showed height significance on thymus weights during 7, 14, 21 and 35 days in contrast to weights of these organs at 28 days that showed no significant differences in thymus weights when compared with the control group.
Table 5: Effects of S. cerevisiae on bursa fabrics weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.08 |
0.15 |
0.13 |
0.22 |
0.22 |
0.65 |
0.39 |
1.36 |
0.66 |
0.80 |
SD |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.04 |
0.20 |
0.02 |
0.52 |
0.02 |
T |
8.497 |
11.13 |
2.157 |
2.330 |
3.196 |
|||||
Sig. |
0.001** |
0.001** |
0.097NS |
0.080NS |
0.033* |
* Indicates significant differences between the two treatments at P<0.05. **Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Table 6: Effects of S. cerevisiae on thymus weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.10 |
0.20 |
0.11 |
0.38 |
0.24 |
0.95 |
0.68 |
1.79 |
1.43 |
3.36 |
SD |
0.00 |
0.04 |
0.00 |
0.00 |
0.00 |
0.04 |
0.00 |
0.08 |
0.60 |
0.00 |
T |
3.990* |
30.01** |
12.322** |
1.007NS |
3.041* |
|||||
Sig. |
0.016 |
0.00 |
0.000 |
0.371 |
0.038 |
* Indicates significant differences between the two treatments at P<0.05. **Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Effects probiotic on immunity organs
Table 7 shows the effects of probiotics on immunity organs, Bursa, weights do not represent significant differences during 21, 28 and 35 days, while it showed the highest differences at 7 and 14 days, as well the thymus gland showed height significant variation at 7 days and 14 days, while weights during 21, 28 and 35 did not differ significantly between the group.
Table 7: shows the effects of probiotics on bursa fabrics weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.211 |
0.132 |
0.351 |
0.218 |
0.437 |
0.393 |
1.720 |
0.660 |
0.850 |
0.610 |
SD |
0.002 |
0.003 |
0.001 |
0.001 |
0.015 |
0.200 |
0.510 |
0.520 |
0.131 |
0.100 |
T |
33.00** |
28.721** |
0.374NS |
2.521NS |
2.521NS |
|||||
Sig. |
0.000 |
0.000 |
0.728 |
0.065 |
0.065 |
**Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Table 8: Showed the effects of probiotics on thymus weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.057 |
0.097 |
0.207 |
0.106 |
0.308 |
0.236 |
0.795 |
0.680 |
2.300 |
1.432 |
SD |
0.003 |
0.002 |
0.002 |
0.003 |
0.058 |
0.001 |
0.380 |
0.000 |
0.010 |
0.603 |
T |
21.911** |
48.519** |
2.139NS |
0.522NS |
2.493NS |
|||||
Sig. |
0.000 |
0.000 |
0.099 |
0.629 |
0.067 |
* Indicates significant differences between the two treatments at P<0.05. **Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Effects S. cerevisiae and probiotic on immunity organs
The effects of mixing S. cerevisiae and probiotics on chicken immunity organs are represented in table 9. It showed significant differences in Bursa weight during 7 and 14 days and a significant differences in weights of gland during 35 days and did not are present significant differences between the group at 21 and 28 days. Table 10 showed no significant changes in thymus weights during 14 and 28 days, while it was highly significant during zero, 7, 21 and 35 days.
Table 9: Shows the effects of mixing of them on Bursa weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.217 |
0.132 |
0.477 |
0.218 |
0.620 |
0.393 |
1.283 |
0.660 |
1.063 |
0.610 |
SD |
0.004 |
0.003 |
0.006 |
0.001 |
0.050 |
0.200 |
0.145 |
0.520 |
0.165 |
0.100 |
T |
29.963** |
77.115** |
1.901NS |
2.000NS |
4.069* |
|||||
Sig. |
0.000 |
0.000 |
0.130 |
0.116 |
0.015 |
* Indicates significant differences between the two treatments at P<0.05. **Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Table 10: Shows the effects of mixing-of them on thymus gland weights (%)
7 days |
14 days |
21 days |
28 days |
35 days |
||||||
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
SAR |
Cont |
|
Mean |
0.157 |
0.106 |
0.310 |
0.236 |
0.973 |
0.680 |
1.740 |
1.432 |
3.453 |
2.042 |
SD |
0.003 |
0.003 |
0.053 |
0.001 |
0.075 |
0.000 |
0.200 |
0.603 |
0.445 |
0.748 |
T |
22.706** |
2.417NS |
6.769** |
0.840NS |
2.810* |
|||||
Sig. |
0.000 |
0.000 |
0.130 |
0.116 |
0.015 |
* Indicates significant differences between the two treatments at P<0.05. **Indicates that there are highly significant differences between the two treatments at P<0.01. NS indicates that there are no significant differences between the two treatments.
Effects of S. cerevisiae, probiotic and mixing of them on hematological parameters
Figure 1 and 2, showed the effects of S. cerevisiae, probiotic and mixing of them on hemoglobin concentration and packed cell volume during the experimental period. It was highly significant differences with T4. Furthermore, T2 and T3 showed significant variation in hematological parameters compared with T1 (control). Table 11 represents the correlation ship of mixing supplemented of S. cerevisiae and probiotic on immunity organs and intestine weights, there was a highly significant difference in intestinal weights with (bursa and thymus gland weights) as well bursa of Fabricius showed highly significant variation with thymus gland weights
Figure 1: Effects of S. cerevisiae, probiotic and mixing of them on Hb concentration (gm/dl).
Figure 2: Effects of S. cerevisiae, probiotic and mixing of them PCV (%).
Table 11: Shows the effect of the correlation ship of S. cerevisiae and probiotic on thymus, bursa and intestine weight
Organs |
Bursa weights |
Thymus weights |
Intestine |
0.771** |
0.933** |
Bursa of Fabricius |
1 |
0.683** |
** Indicates a highly significant correlation coefficient between the T4 at P<0.01.
Discussion
Conclusion
Using S. cerevisiae and probiotics as a safety material to the regular antibiotic used in the chicken industry, we were able to prevent infection through the action of T4 that showed the best influences on growth performance, improved immunity organs activity, and hematological parameters of broiler profile.
Acknowledgments
The researcher is beholden to the faculty of veterinary medicine at the university of Mosul for their support of this study.
Conflict of interest
The researcher acknowledges that there are non-conflicts of interest in this work.