Intestinal mucosa structure of broiler chickens infected experimentally with Eimeria tenella and treated with essential oil of oregano

Silva, Maria Aparecida da; Pessotti, Bruna Mirelly de Sousa; Zanini, Surama Freitas; Colnago, Geraldo Luiz; Rodrigues, Maria Regina Alves; Nunes, Louisiane de Carvalho; Zanini, Marcos Santos; Martins, Isabella Vilhena Freire

doi:10.1590/s0103-84782009005000135

Cited by 45 publications

(27 citation statements)

References 7 publications

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“…However, Sarikhan et al (2010), Jiménez-Moreno et al (2013) and Inchareon (2013) reported that dietary CF level had no effect on villi crypt depth. A villi height to crypt depth ratio is a useful criterion for estimating the absorptive capacity of the small intestines (Silva et al, 2009). Thus, the higher the ratio the better the absorptive capacity.…”

Section: Resultsmentioning

confidence: 99%

Effect of dietary crude fibre level on intake, digestibility and productivity of slow-growing indigenous Venda chickens aged one to 91 days

Ginindza

Jones

Norris

2017

IJAR

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Two experiments were conducted to determine diet crude fibre (CF) levels for optimal productivity of slow-growing indigenous Venda chickens. In each experiment the diets were isocaloric and isonitrogenous but with different CF levels of 2, 3, 5, 6 and 8%. A complete randomised design was used in both experiments, the starter (1-49 days) and finisher (50-91 days). A quadratic equation was used to determine CF levels for optimal productivity. Dietary CF levels of 3.4, 4.0 and 3.0 % optimised growth rate, feed conversion ratio (FCR) and live weight of unsexed Venda chickens (starter), respectively; and higher dietary CF levels resulted in lower (P<0.05) intake and digestibility. Dietary CF levels of 6.5, 4.3, 3.2 and 4.4 % optimised feed intake, growth rate, nitrogen retention and live weight of male Venda chickens (finisher), respectively; while higher dietary CF levels resulted in poor (P<0.05) FCR and nutrient digestibility. The results indicate that different CF levels optimised production parameters, and dietary CF levels for optimal productivity increased as chickens grew older.

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Section: Resultsmentioning

confidence: 99%

Effect of dietary crude fibre level on intake, digestibility and productivity of slow-growing indigenous Venda chickens aged one to 91 days

Ginindza

Jones

Norris

2017

IJAR

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“…Ertas et al (2005) e Silva et al (2009) observaram efeito positivo no desempenho de aves suplementadas com este aditivo. O carvacrol e o timol, componentes do óleo essencial de orégano, agem sobre a membrana celular bacteriana impedindo a divisão mitótica, reduzindo a sobrevivência de bactérias patogênicas (FUKAYAMA et al, 2005).…”

Section: Introductionunclassified

Uso de óleo essencial de orégano, salinomicina e bacitracina de zinco na dieta de frangos de corte

Pulici¹,

Burbarelli²,

Polycarpo³

et al. 2014

Braz. J. Vet. Res. Anim. Sci.

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ResumoO presente trabalho teve como objetivo avaliar dietas com óleo essencial de orégano, associado ou não com salinomicina, como alternativa à bacitracina de zinco sobre o desempenho zootécnico de frangos de corte. Foram utilizados 600 pintos de um dia de idade, machos, da linhagem Cobb® 500, criados até 42 dias de idade em boxes com cama de casca de arroz providos de comedouros tubulares e bebedouros nipple. O delineamento foi inteiramente casualizado, com seis dietas e 10 repetições de 10 aves cada. As dietas experimentais à base de milho e farelo de soja foram: controle positivo -antibiótico (bacitracina de zinco) + 0,05% de anticoccidiano (salinomicina), controle negativo -dieta basal (DB) sem aditivos, DB + 0,05% de salinomicina e 0,03% de óleo essencial de orégano (Orego-Stim®), DB + 0,03% de óleo essencial de orégano, DB + 0,05% de salinomicina e 0,05% de óleo essencial de orégano, DB + 0,05% de óleo essencial de orégano. Não foi encontrado efeito da utilização do óleo de orégano até 21 dias no desempenho das aves. Nos demais períodos, aos 35 e 42 dias, o desempenho das aves tratadas com 0,03% de óleo essencial de orégano + salinomicina apresentou resultados semelhantes ao controle positivo, levando à conclusão de que a dose de 0,03% de óleo essencial de orégano + salinomicina pode substituir a bacitracina de zinco + salinomicina em dietas para frangos de corte. Palavras-chave:Aditivos. Carvacrol. Fitogênico. Timol. AbstractThe inclusion of oregano essential oil, alone or associated with salinomycin, was evaluated as an alternative to zinc bacitracin on the performance of broiler chickens. This study used 600 male Cobb 500® day-old chicks, raised 42 days in boxes with rice hulls, provided with tubular feeders and nipple drinkers. The experimental design was completely randomized with six diets and 10 replications with 10 birds per experimental unit. The diets were based on corn and soybean meal: positive control -antibiotic (zinc bacitracin) + 0.05% anticoccidial (salinomycin), negative control -basal diet (BD) without additives, DB + 0.05% of salinomycin and 0.03% of oregano essential oil (Orego-Stim®), DB + 0.03% of oregano essential oil, DB + 0.05% of salinomycin and 0.05% of oregano essential oil, DB + 0.05% of oregano essential oil. There were no treatment effects on broiler performance until 21 days of age. In the other periods, at 35 and 42 days, the oregano essential oil at 0.03% combined with salinomycin presented similar effects as the positive control, leading to the conclusion that 0.03% of oregano essential oil associated with the salinomycin can replace zinc bacitracin + salinomycin in broiler chicken diets.

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“…Almost all poultry dietary contain of 2 to 40 g/ton of any type of antimicrobial agent. In 2006, the European Union banned several antimicrobial growth promoters, however in Brazil, some growth promoters are used to feed commercial poultry and broilers chickens (43). The demand of products free of antibiotics and chemotherapy has led to the exploration of news to growth promoters, such as probiotics, prebiotics, and essential oils.…”

Section: Introductionmentioning

confidence: 99%

“…In broiler nutrition, probiotic species belonging to genera Lactobacillus and Enterococcus are utilized to modulate intestinal microbial communities and pathogen inhibition (34). On the other hand, studies testing the addition of essential oils in the diet of broiler chickens have demonstrated in vitro antimicrobial, antiinflammatory, antioxidant and anticoccidiostatic activity of many plants (29,43). Hume et al (21) observed that essential oil supplemented in the diets avoided the drastic shifts after a mixed challenge of Eimeria spp.…”

Section: Introductionmentioning

confidence: 99%

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Species distribution and antimicrobial susceptibility of enterococci isolated from broilers infected experimentally with Eimeria spp and fed with diets containing different supplements

Cassenego¹,

d’Azevedo²,

Ribeiro³

et al. 2011

Braz. J. Microbiol.

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Resistant bacteria in animal can be spread to environment and to humans. Poultry feed and infections caused by Eimeria spp. are important factors in determining the intestinal microbial communities. The aim of this study was to verify the prevalence of species and antimicrobial susceptibility of Enterococcus isolated from broilers fed with different supplements and infected experimentally with Eimeria spp. Broilers were divided in eight groups, fed with diets supplemented with a combination of antimicrobial, ionophore-coccidiostatics, probiotic, essential oil. At 14 days old all birds, except the control, received a solution containing oocysts of Eimeria spp. Samples of cloacal swabs from broilers were collected. A total of 240 Enterococcus sp. strains were isolated, confirmed genus by PCR, classified as species, tested for antimicrobial susceptibility and screened by PCR for the presence of tet(L), tet(M) and erm(B) genes. The overall distribution of species isolated from fecal samples was E. faecalis (40%), followed by E. casseliflavus/E. gallinarum (10.8%), E. mundtii (10.8%), E. faecium (10.8%), E. columbae (5.8%) and E. gallinarum (4.2%). Changes in the composition or frequency of Enterococcus species were observed in all dietary supplementation.Antimicrobial susceptibility tests showed resistance phenotypes a range of antibiotics, especially used in humans such as, streptomycin, penicillin, rifampicin and vancomycin. There was no correlation between different supplementation for broilers and antimicrobial resistance and the presence of tet(M), tet(L) and erm(B) genes. Dietary supplementation had effect on the Enterococcus sp. colonization, but did not have significant effect on the phenotype and genotype of antimicrobial resistance in enterococci.

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Intestinal mucosa structure of broiler chickens infected experimentally with Eimeria tenella and treated with essential oil of oregano

Abstract: Intestinal mucosa structure of broiler chickens infected experimentally with Eimeria tenella and treated with essential oil of oregano

Cited by 45 publications

References 7 publications

Effect of dietary crude fibre level on intake, digestibility and productivity of slow-growing indigenous Venda chickens aged one to 91 days

Effect of dietary crude fibre level on intake, digestibility and productivity of slow-growing indigenous Venda chickens aged one to 91 days

Uso de óleo essencial de orégano, salinomicina e bacitracina de zinco na dieta de frangos de corte

Species distribution and antimicrobial susceptibility of enterococci isolated from broilers infected experimentally with Eimeria spp and fed with diets containing different supplements

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