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Screening and Characterization of Probiotics Isolated from Traditional Fermented Products of Ethnic-Minorities in Northwest China and Evaluation Replacing Antibiotics Breeding Effect in Broiler

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25 ago 2024

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Fig. 1.

The antioxidant capacity of strains in vitro.
A) Evaluation the scavenging ability of different probiotics on superoxide; B) evaluation the scavenging ability of different probiotics on DPPH; C) evaluation the scavenging capacity of different probiotics on hydroxyl radical; D) evaluation the scavenging capacity of different probiotics on total reduction.
Data are presented as mean ± standard deviation (n = 3). Significance was marked as different letters above the bars (p < 0.05) between the groups.
The antioxidant capacity of strains in vitro. A) Evaluation the scavenging ability of different probiotics on superoxide; B) evaluation the scavenging ability of different probiotics on DPPH; C) evaluation the scavenging capacity of different probiotics on hydroxyl radical; D) evaluation the scavenging capacity of different probiotics on total reduction. Data are presented as mean ± standard deviation (n = 3). Significance was marked as different letters above the bars (p < 0.05) between the groups.

Fig. 2.

Analysis of antimicrobial ability of the probiotics.
A) Evaluation of antagonistic ability of different probiotics against Escherichia coli; B) evaluation of antagonistic ability of different probiotics against Salmonella spp.; C) evaluation of antagonistic ability of different probiotics against Staphylococcus aureus; D) evaluation of antagonistic ability of different probiotics against Enterobacter sakazakii.
Data are presented as mean ± standard deviation (n = 3). Significance was marked as different letters above the bars (p < 0.05) between the groups.
Analysis of antimicrobial ability of the probiotics. A) Evaluation of antagonistic ability of different probiotics against Escherichia coli; B) evaluation of antagonistic ability of different probiotics against Salmonella spp.; C) evaluation of antagonistic ability of different probiotics against Staphylococcus aureus; D) evaluation of antagonistic ability of different probiotics against Enterobacter sakazakii. Data are presented as mean ± standard deviation (n = 3). Significance was marked as different letters above the bars (p < 0.05) between the groups.

Fig. 3.

Serum immune indexes of broilers in serum.
A) Levels of IgA in different groups; B) levels of IgG in different groups; C) levels of IgM in different groups; D) levels of TNF-α in different groups; E) levels of IL-2 in different groups; F) levels of IL-6 in different groups.
Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, ns – non-significance
Serum immune indexes of broilers in serum. A) Levels of IgA in different groups; B) levels of IgG in different groups; C) levels of IgM in different groups; D) levels of TNF-α in different groups; E) levels of IL-2 in different groups; F) levels of IL-6 in different groups. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, ns – non-significance

Fig. 4.

Oxidative stress indexes of broilers in serum.
A) Levels of SOD in different groups; B) levels of CAT in different groups; C) levels of GSH-Px in different groups; D) levels of T-AOC in different groups; E) levels of MDA in different groups; F) levels of TC in different groups.
Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, ns – non-significance
Oxidative stress indexes of broilers in serum. A) Levels of SOD in different groups; B) levels of CAT in different groups; C) levels of GSH-Px in different groups; D) levels of T-AOC in different groups; E) levels of MDA in different groups; F) levels of TC in different groups. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, ns – non-significance

Fig. 5.

Histopathological sections and biochemical indexes of broilers liver.
The liver tissue observed under the following conditions: the eyepiece × objective = 10 × 40, and the scale is 100 μm. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ns – non-significance
Histopathological sections and biochemical indexes of broilers liver. The liver tissue observed under the following conditions: the eyepiece × objective = 10 × 40, and the scale is 100 μm. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ns – non-significance

Fig. 6.

Histopathological sections and biochemical indexes of broilers kidney.
The kidney tissue observed under the following conditions: the eyepiece × objective =10 × 40, and the scale is 100μm. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ns – non-significance
Histopathological sections and biochemical indexes of broilers kidney. The kidney tissue observed under the following conditions: the eyepiece × objective =10 × 40, and the scale is 100μm. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ns – non-significance

Fig. 7.

Histopathological sections and biochemical indexes of broilers of the intestinal tissue.
The intestinal tissue observed under the following conditions: the eyepiece × objective = 10 × 10, and the scale is 100 μm.
Histopathological sections and biochemical indexes of broilers of the intestinal tissue. The intestinal tissue observed under the following conditions: the eyepiece × objective = 10 × 10, and the scale is 100 μm.

Fig. 8.

Effects of daily use of antibiotics and probiotics on gut microbiota of broilers.
A) Shannon index in different groups; B) PCA of overall diversity. C) comparison of phylum relative abundance in different groups; D) comparison of family relative abundance in different groups.
Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, **** – p < 0.0001
Effects of daily use of antibiotics and probiotics on gut microbiota of broilers. A) Shannon index in different groups; B) PCA of overall diversity. C) comparison of phylum relative abundance in different groups; D) comparison of family relative abundance in different groups. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, **** – p < 0.0001

Fig. 9.

Family relative abundance in different groups.
A) Lactobacillaceae relative abundance in different groups;
B) Ruminococcaceae relative abundance in different groups;
C) Desulfovibrionaceae relative abundance in different groups; D) Christensenellaceae relative abundance in different groups;
E) Alistipes relative abundance in different groups.
Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, **** – p < 0.0001
Family relative abundance in different groups. A) Lactobacillaceae relative abundance in different groups; B) Ruminococcaceae relative abundance in different groups; C) Desulfovibrionaceae relative abundance in different groups; D) Christensenellaceae relative abundance in different groups; E) Alistipes relative abundance in different groups. Data are presented as mean ± standard deviation (n = 5). * – p < 0.05, ** – p < 0.01, *** – p < 0.001, **** – p < 0.0001

The susceptibility of candidate lactic acid bacteria (LAB) strains to different antibiotics_

Antibiotics Dose (μg/disc) Susceptibility
BM7-6 DM-10 DM6-2 DM7-6 DM9-7 YF9-4 YM7-6
Erythromycin 15 S R I S I R S
Amikacin 30 S N S N N R R
Ampicillin 10 I I I S S S I
Penicillin 10 S N S S N S N
Chloramphenicol 30 S S S S S I S
Ceftazidime 30 S R R I I S S
Tetracycline 30 S N I S N S R
Ciprofloxacin 5 S N N N N I S
Clindamycin 2 S R R I N S R
Azithromycin 10 S S S S S I S

The growth of probiotics in artificial gastric juice and intestinal juice_

Gastric juice Intestinal juice
0 h (CFU/ml) 3 h (CFU/ml) Survival rate (%) 7 h (CFU/ml) Survival rate (%) 11 h (CFU/ml) Survival rate (%)
BM7-6 3.0 ± 0.5 × 108 7.8 ± 0.8 × 107 26.11 9.6 ± 1.0 × 106 3.2 8.7 ± 0.7 × 106 2.9
DM-10 2.8 ± 0.4 × 108 1.8 ± 0.3 × 107 6.55 < 105 < 1 < 105 < 1
DM6-2 1.7 ± 0.2 × 109 1.4 ± 0.4 × 108 7.92 < 105 < 1 < 105 < 1
DM7-6 3.1 ± 0.4 × 109 2.5 ± 0.6 × 109 79.79 1.5 ± 0.3 × 109 48.39 1.9 ± 0.7 × 109 61.29
DM9-7 5.8 ± 0.9 × 109 3.7 ± 0.8 × 109 63.22 2.5 ± 0.6 × 109 43.10 2.6 ± 0.5 × 109 44.82
YF9-4 7.6 ± 1.0 × 109 5.4 ± 0.7 × 109 71.05 4.2 ± 0.5 × 109 55.26 4.2 ± 1.4 × 109 55.26
YM7-6 2.3 ± 0.5 × 108 8.7 ± 0.8 × 107 37.14 2.7 ± 0.3 × 107 11.74 2.3 ± 0.6 × 107 10.00
Idioma:
Inglés
Calendario de la edición:
4 veces al año
Temas de la revista:
Ciencias de la vida, Microbiología y virología