Symbiotics and Aloe vera and Symphytum officinale extracts in broiler feed

Abstract

This study aimed to test the effects of dietary Aloe vera and Symphytum officinale extracts added separately or in combination with symbiotics on the performance, nutrient utilization, serum biochemical parameters, biometrics, and intestinal histomorfometry of broilers. The experiment had a randomized block design with five treatments and six replicates of ten broilers each. Treatments were as follows: negative control and positive control (diet without and with antibiotic, respectively); 0.2% Aloe vera (AV); 0.2% Symphytum officinale (S); 0.2% functional supplement, composed of symbiotics fermented in Aloe vera and comfrey plant extracts (S+PE). At seven days of age, FI of birds fed the Aloe vera extracts diets were lower than that observed for birds consuming the diet with Symphytum officinale extract and S+PE. Broiler performance remained unaffected by treatments at others ages evaluated. At 10 to 14 days of age the lowest ADCDM ADCCP was shown in group feed NC. The highest ADCCP was observed in PC control group and in diets supplemented with Aloe vera and S+PE. Serum levels of cholesterol, triglycerides, and phosphorus were affected by addition of extracts at seven, 21, and 35 days of age. The longest duodenal villi were observed in broilers fed S+PE diets at seven days of age. Aloe vera and Symphytum officinale extracts and symbiotics can be used in broiler diets as an alternative to growth-promoting antibiotics. Key words: Antibiotics. Digestibility. Histomorphometry. Performance. Serum parameters. ResumoCom este projeto objetivou-se verificar o efeito da inclusão individual dos extratos vegetais de Aloe vera e Symphytum officinale e da associação de um simbiótico com estes extratos sobre o desempenho, aproveitamento nutricional, parâmetros séricos bioquímicos, biometria e histomorfometria intestinal de frangos de corte. O delineamento experimental utilizado foi em blocos casualizados com cinco tratamentos e seis repetições de 10 aves cada. Os tratamentos foram: Controle Negativo, Controle Positivo (rações sem e com antibiótico, respectivamente), inclusão 0,2% Aloe vera; 0,2% Symphytum officinale e 0,2% suplemento funcional (simbióticos+extratos vegetais, S+EV). Aos sete dias de idade, foi observado menor consumo de ração nas aves alimentadas com ração contendo extrato de Aloe vera do que nas aves alimentadas com extrato de Symphytum officinale e S+EV. O desempenho das aves não foi afetado pelos tratamentos em nenhuma das idades avaliadas. Aos 10 a 14 dias de idade, o menor CMAMS e CMAPB foram observados nas dietas do grupo controle negativo. A maior CMAPB foi observada no grupo controle positivo e em dietas suplementadas com Aloe vera e S+EV. As concentrações séricas de colesterol, triglicérideos e fósforo foram afetadas pela adição dos extratos aos sete, 21 e 35 dias de idade. A maior altura de vilosidades do duodeno foi observada aos sete dias de idade para o S+EV. A utilização dos extratos de Aloe vera, Symphytum officinale e do simbiótico na dieta de frangos de corte representa uma alternativa...

Symphytum Species: A Comprehensive Review on Chemical Composition, Food Applications and Phytopharmacology

“…In addition to the antifungal activity of comfrey, its antibacterial activity against the bacteria causing bovine mastitis has also been reported [22]. Indeed, Oliveira et al introduced S. officinale in the broiler diet and found that it could be used as a growth-promoting antibiotic for feeding broiler [23].…”

Anti-inflammatory Properties of the Genus Symphytum L.: A Review

“…are common inhabitants of humid meadows and edge of lake parts of Europe, Asia, and America, belonging to Boraginaceae. The genus Symphytum L. is also known worldwide as comfrey, knitbone, bruise wort, and slipprty wort (30,31). Symphytum L. includes about 40 species as the most famous ones are: S. officinale L., S. x uplandicum Nyman L., S. asperrimum L., S. pregrinum ledab L., S. kurdicum L., S. caucasicum Bieb L., S. asperum Lepech L., and S. tuberosum L. (32,33).…”