Desempenho e histomorfometria intestinal de frangos de corte de 1 a 21 dias de idade recebendo melhoradores de crescimento

Ramos, Lucas Feksa; Lopes, João Batista; Silva, Silvana Maria Medeiros de Sousa; Silva, Francisco Eduardo Soares; Ribeiro, Mabell Nery

doi:10.1590/s1516-35982011000800017

Cited by 13 publications

(12 citation statements)

References 10 publications

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“…The applied treatments did not influence (p>0.05) FCR during the period of 1-21 days of age. Recently, Ramos et al (2011) also did not find any influence of probiotic, prebiotic, or symbiotic additives on the FCR of 21-d-old broilers.…”

Section: Resultsmentioning

confidence: 95%

Intestinal integrity and performance of broiler chickens fed a probiotic, a prebiotic, or an organic acid

Fernandes

Martins

Mendes

et al. 2014

Rev. Bras. Cienc. Avic.

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KeywordsScanning electron microscopy, morphometrics, intestinal mucosa, intestinal wall.Submitted: May/2013 Approved: February/2014 ABStRACt This study aimed at evaluating the intestinal integrity, using light and scanning electron microscopy (SEM), and the performance of broiler chickens fed additives alternative to antimicrobials. A total of 1080 male chicks were distributed according to a completely randomized experimental design, with six treatments with six replicates of 30 birds each. The following treatments were evaluated: basal diet (control), basal diet supplemented with an antimicrobial, basal diet supplemented with a probiotic, basal diet supplemented with a prebiotic, basal diet with a symbiotic, and basal diet supplemented with organic acids. Weight gain, feed intake, feed conversion ratio and livability were recorded when broiler chickens were 10, 21, 35, and 42 days old. On day 42, 72 birds were individually weighed and sacrificed. In order to evaluate the morphometrics of the different intestinal wall layers, segments of the small intestine and the cecum were collected from two birds per replicate, and intestinal integrity (SEM) was evaluated in the same segments of two birds per treatment. During the starter period (1-21 days old), birds fed the alternative additives presented similar weight gain as those fed the antimicrobial product, but were not different from control birds. Feed conversion ratio of birds fed alternative additives was better than that of the control birds from one to 10 days of age, but not during the remaining rearing period, and was similar to the birds receiving the antimicrobial. The morphometric parameters of the different intestinal wall layers was not influenced by the treatments. During the total rearing period, the evaluated alternative additives did not improve intestinal integrity or broiler performance.

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Section: Resultsmentioning

confidence: 95%

Intestinal integrity and performance of broiler chickens fed a probiotic, a prebiotic, or an organic acid

Fernandes

Martins

Mendes

et al. 2014

Rev. Bras. Cienc. Avic.

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“…De acordo com Ramos et al (2011), a maior densidade e altura das vilosidades está relacionada aos resultados de desempenho, em que as aves apresentam maior peso cor- Fig.4 poral, devido ao aumento da capacidade de digestão e absorção de nutrientes. Nas três avaliações, dos dois experimentos, o tratamento T1 (5HTP) apresentou os melhores resultados quanto a densidade de vilos por campo avaliado, altura de vilosidades em duodeno e peso médio corporal das aves, demonstrando a atuação do precursor nos processos de digestão e absorção de nutrientes, bem como confirmando a relação da densidade, altura das vilosidades e desempenho de frangos de corte citados anteriormente.…”

Section: Discussionunclassified

Avaliação dos efeitos de 5-hidroxitriptofano em-hidroxibenzilhidrazine associados a Lactobacillus spp. na morfometria intestinal e imunomarcação de serotonina em frangos de corte desafiados com Salmonella Enteridis

et al. 2015

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RESUMO.-As células enterocromafins são um dos componentes da mucosa intestinal que liberam serotonina para o lúmen, promovendo atividades secretórias e crescimento celular de vários tecidos, incluindo vilosidades intestinais. O presente estudo avaliou as influências do 5-hidroxitriptofano (5HTP) e do m-hidroxibenzilhidrazine (NSD1015), associados a Lactobacillus spp., sobre o peso corporal e o desenvolvimento das vilosidades intestinais na porção proximal do duodeno de frangos de corte desafiados com Salmonella Enteritidis. Verificou-se também se a presença de Lactobacillus spp. e Salmonella Enteritidis influenciaram a imunomarcação de serotonina no duodeno e, para isso, o Avaliação dos efeitos de 5-hidroxitriptofano e m-hidroxibenzilhidrazine associados a Lactobacillus spp. na morfometria intestinal e imunomarcação de serotonina em frangos de corte desafiados com Salmonella Enteridis¹ Enterochromaffin cells are components of the intestinal mucosa to release serotonin lumen, promoting cell growth and secretory activity of various tissues, including intestinal villi. This study evaluated the influence of 5-hydroxytryptophan (5HTP) and m-hidroxibenzilhidrazine (NSD1015) associated with Lactobacillus spp. on body weight and development of intestinal villi in the proximal duodenum of broilers challenged with Salmonella Enteritidis. It was found that the presence of Lactobacillus spp. and Salmonella Enteritidis influenced immunostaining of serotonin in the duodenum. The study was divided into two experiments with and without challenge by S. Enteritidis. In Experiment 1, birds without challenge, body weights did not differ significantly (p>0.05), and in Experiment 2, the treatments with precursor and precursor associated with Lactobacillus spp. determined higher body weight of the birds. In both experiments the birds treated with 5HTP showed increased density and villus height in the duodenum, suggesting the presence of 5HTP as a trophic agent. The use of Lactobacillus spp. also determined greater duodenal villus height. The immunostaining of serotonin, birds treated with Lactobacillus spp. in Experiment 1, and the birds treated with Lactobacillus spp. and challenged with S. Enteritidis in Eperiment 2 showed higher values, suggesting that the presence of these bacteria promotes greater release of serotonin into the duodenum. The exact mechanism of how this process occurs needs to be further elucidated.

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“…Readings were taken using the Image-Pro Plus program 1.3.2 (1994). Straight lengths were selected and measured according to the adopted unit (μm), with 30 villi and 30 crypts from each intestinal region, per animal, according to the recommendations made by Ramos et al (2011).…”

Section: Methodsmentioning

confidence: 99%

Available phosphorus reduction in weaned piglets’ diets containing phytase combined with butyric and benzoic acids

Rufino

Nunes

Stringhini

et al. 2017

SCA

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This study aimed to evaluate the reduction of available phosphorus (Pa) in the diet of weaned piglets using phytase combined with butyric and benzoic acids. A total of 120 piglets with initial weight of 6.7 ± 0.02 kg were used in a randomized block design with six treatments: control; reduction of 0.15% Pa (Pa red); Phytase + Pa red; Phytase + butyric acid + Pa red; Phytase + benzoic acid + Pa red; Phytase + butyric acid + benzoic acid + Pa red; five replicates, with four animals each. The experimental diets had no influence on the fecal scores, Escherichia coli count, or the pH of the digestive tract. An improved villus:crypt ratio was found when the combination of phytase with butyric and benzoic acids was used. The histomorphometry of the jejunum and of the ileum showed no differences with respect to villus height, crypt depth, and villus:crypt ratio. The bones of the piglets fed with a diet containing reduced levels of available phosphorus showed less resistance to fracture. The levels of calcium in the raw bones were lower in the piglets that received a diet containing phytase and butyric acid. Reduced phosphorus deposition was observed in the bones of animals that received the diet containing phytase, butyric acid, and benzoic acid. It is concluded that the inclusion of phytase and butyric and benzoic acids, and their combination, in the diet of weaned piglets does not affect the pH of the stomach, duodenum, jejunum, ileum, cecum, and colon, and does not change the frequency of diarrhea or the E. Coli count. The association of butyric and benzoic acids with phytase in the diet of piglets after weaning improves the villus:crypt ratio of the duodenum. The use of phytase (1000 UF/kg) allows the formulation of diets for weaned piglets with a 0.15% reduction in the level of available phosphorus without damaging the concentration of calcium and phosphorus in the bones and without altering bone resistance. Key words: Additives. Enzyme. Intestinal Health. Minerals. Organic Acids. Pigs. ResumoRealizou-se este estudo com o objetivo de avaliar a redução do nível de fósforo disponível (Pd) na dieta de leitões desmamados utilizando fitase associada aos ácidos butírico e benzóico. Foram utilizados 120 leitões, com peso inicial de 6,7±0,02kg, distribuídos em delineamento de blocos ao acaso com seis tratamentos: controle; redução de 0,15% de Pd (Pd red); Fitase + Pd red; Fitase + ácido butírico + Pd red; Fitase + ácido benzóico + Pd red; Fitase + ácido butírico + ácido benzóico + Pd red; cinco repetições, com quatro animais cada. As dietas experimentais não influenciaram os escores fecais, a contagem de E. coli e o pH do trato digestivo. Verificou-se melhor relação vilo:cripta com a associação da fitase, com os ácidos butírico e benzóico. A histomorfometria do jejuno e do íleo não apresentaram diferenças para altura de vilosidades, profundidade de cripta e a relação vilo:cripta. Os ossos correspondentes aos leitões alimentados com a dieta com redução do nível de fósforo disponível apresentaram menor resistência à ...

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Desempenho e histomorfometria intestinal de frangos de corte de 1 a 21 dias de idade recebendo melhoradores de crescimento

Cited by 13 publications

References 10 publications

Intestinal integrity and performance of broiler chickens fed a probiotic, a prebiotic, or an organic acid

Intestinal integrity and performance of broiler chickens fed a probiotic, a prebiotic, or an organic acid

Avaliação dos efeitos de 5-hidroxitriptofano em-hidroxibenzilhidrazine associados a Lactobacillus spp. na morfometria intestinal e imunomarcação de serotonina em frangos de corte desafiados com Salmonella Enteridis

Available phosphorus reduction in weaned piglets’ diets containing phytase combined with butyric and benzoic acids

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