scholarly journals The Effect of Ferulaassa-Foetida Gum Powder Compare to Antibiotic on Performance, Microbial Population and Intestinal Morphology in Broiler Chickens

2018 ◽  
Vol 8 (17) ◽  
pp. 26-33 ◽  
Author(s):  
Mahdi Ramezami ◽  
Mohsen Afsharmanesh ◽  
Reza Tahmasbi ◽  
Elahe Rostami Gohari
Keyword(s):  
Broiler Chickens ◽  
Microbial Population ◽  
Intestinal Morphology

Effects of an organic acid mixture and methionine supplements on intestinal morphology, protein and nucleic acids content, microbial population and performance of broiler chickens

2011 ◽  
Vol 51 (11) ◽  
pp. 1025 ◽  
Author(s):  
A. A. Saki ◽  
S. M. Eftekhari ◽  
P. Zamani ◽  
H. Aliarabi ◽  
M. Abbasinezhad
Keyword(s):  
Nucleic Acids ◽  
Organic Acids ◽  
Organic Acid ◽  
Dna Content ◽  
Broiler Chickens ◽  
Microbial Population ◽  
Intestinal Morphology ◽  
Acid Mixture ◽  
Broiler Chicks ◽  
And Performance

A study was carried out to investigate the effects of dietary supplementation of an organic acids mixture and two methionine supplements on intestinal morphology, protein and nucleic acids content, microbial population and performance of broiler chickens. Six hundred unsexed day-old Ross 308 broiler chicks were used in a factorial arrangement (3 × 2) based on a completely randomised design by four replicates with 25 chicks in each. Experimental diets consisted of: 0% organic acid mixture + DL-methionine (Treatment 1), 0% organic acid mixture + Alimet (Treatment 2), 0.5% organic acid mixture + DL-methionine (Treatment 3), 0.5% organic acid mixture + Alimet (Treatment 4), 1% organic acid mixture + DL-methionine (Treatment 5) and 1% organic acid mixture + Alimet (Treatment 6). A significant increase in jejunum mucosal DNA content was found by using 1% of organic acid mixture compared with those by other levels of organic acids at 21 days of age (P < 0.05). Also Treatments 5 and 6 had a higher mucosal DNA content than other treatments (P < 0.05) in a similar period. While at grower stage, the results have shown that protein content, protein/DNA and protein/RNA ratio by 0.5 and 1% of organic acids mixture significantly increased compared with those in the 0% level (P < 0.05). The addition of 1% level of organic acid mixture significantly increased villus height compared with 0 and 0.5% level of organic acid mixture at 21 days of age (P < 0.05). Highest and lowest villus heights were obtained by Treatments 1 and 6 (P < 0.05). Crypt depth increased by 0.5 and 1% of organic acid at 21 and 42 days of age (P < 0.05). Villus surface was significantly increased by 1% of organic acid mixture compared with that by 0% level at 21 days of age. The use of organic acid levels especially 1% resulted in an increase in lactic acid bacteria and decreased Enterobacteriaceae counts in the ileum of broiler chicken (P < 0.05). Better bodyweight and feed conversion ratio were obtained (P < 0.05) by 0.5 and 1% of organic acids mixture, although no response was found in feed intake and mortality in this respect (P > 0.05). The results of this study have shown improved reactions on intestinal morphometrical parameters and microflora atmosphors, by using 1% organic acid mixture. In contrast no differences were found between Alimet and DL-methionine in all tested parameters.

scholarly journals Antimicrobial effect of bothropstoxin-i in broilers

2021 ◽  
Vol 42 (1) ◽  
pp. 267-282
Author(s):  
Ana Carolina Portella Silveira ◽  
◽  
Sarah Natalie Cirilo Gimenes ◽  
Luiz Fernando Barbaresco ◽  
Camila Perdoncini Carvalho ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Pathogenic Bacteria ◽  
Bacterial Resistance ◽  
Microbial Population ◽  
Growth Promotion ◽  
Antimicrobial Effect ◽  
Intestinal Morphology ◽  
Nonprescription Drugs ◽  
Significance Level

Bacterial resistance is a sanitary issue explained by indiscriminate use of nonprescription drugs, and antimicrobial use in food production for growth promotion. Bothropstoxin-I (BthTx-I) is a phospholipase A2 (PLA2) from Bothrops jararacussu venom, which has a known antimicrobial effect. The goal of this study was the unprecedented evaluation of in vivo antimicrobial activity of BthTx-I in broilers. Microbiological, biochemical, and histological parameters were determined using 84 21-day old broilers that were kept in cages with four birds each at a density of 625 cm2/broiler. The experiment was randomized by three treatments with seven repetitions of four broilers each that lasted seven days. The treatments were: 1) bacitracin zinc diet; 2) PLA2-BthTx-I; 3) without additives. The data obtained from the studied variables was subjected to analysis of variance and an F-test at the 5% significance level. Averages of each variable in each treatment were compared by Tukey’s test. Broiler bacterial cloacal counts showed that BthTx-I decreased the microbial population without reducing body weight, intestinal morphology, or liver or kidney histopathological damage. The toxin showed in vivo activity, being an alternative for better performance in the production of broiler chickens, because it acted by decreasing the microbial load of potentially pathogenic bacteria in the intestinal microbiota of the birds and did not cause muscle, liver or kidney damage at the assessed dosage.

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