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    Evaluaci贸n de Lactobacillus plantarum en intestino grueso de lechones por microscop铆a electr贸nica y qu铆mica sangu铆nea

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    Objective. To evaluate the presence of Lactobacillus plantarum in large intestine of piglets. Materials and methods. Fifty piglets were randomly allocated into 5 (n=10) treatment groups (T0: without probiotics; T1:with L. plantarum 1 H1; T2:with L. plantarum 1 H2; T3: with commercial probiotics; T4:without commercial probiotics). After treatment, 3 piglets, from each group, were randomly selected and large intestine samples were taken and analyzed by transmission electron microscopy and serum for blood chemistry. The determination of immunoglobulin A (IgA) was made by turbidimetric method; and the total cholesterol and blood ureic nitrogen (BUN) by espectrophotometry. The differential leukocyte count and polymorphonuclear neutrophils (PMN) was examined in blood smears. Results. Adhesion of L. plantarum 1 H1 and L. plantarum 1 H2 was found in the mucosa of the large piglet intestine. Was observed secretion of mucin, and inflammation in the lamina propria and connective tissue edema as part of the immune response. IgA showed high concentrations in T2 (L. plantarum 1 H1, 333 mg/100 ML) and T3 (L. plantarum 1 H2, 300 mg/100 mL). The T2 and T3 values in polymorphonuclear neutrophils were elevated (65% and 55% respectively). Total cholesterol was lower in T2 (113.83%) and T3 (93.8%). T2 and T3 showed the lowest BUN values (7.83 and 8.76 mg% respectively). Conclusions. The use of probiotics with L. plantarum 1 added in the ration showed a positive effect in the colonization and adhesion in the large intestine, as well as, a positive response in their immune system.Objetivo. Evaluar la presencia de Lactobacillus plantarum en intestino grueso de lechones. Materiales y m茅todos. 50 lechones fueron asignados al azar a 5 tratamientos (n=10). (T0: sin probi贸tico; T1: con L. plantarum 1 H1; T2: con L. plantarum 1 H2; T3: con probi贸tico comercial; T4: sin probi贸tico comercial). Despu茅s de los tratamientos, 3 lechones de cada grupo fueron seleccionados aleatoriamente para obtener muestras de intestino grueso para an谩lisis por microscop铆a electr贸nica y suero para qu铆mica sangu铆nea. La inmunoglobulina A (IgA) se hizo por turbidimetr铆a; colesterol total y nitr贸geno ureico (BUN) por espectofotometr铆a. El recuento diferencial de leucocitos y polimorfonucleares (PMN) neutr贸filos mediante extendido de sangre. Resultados. Se comprob贸 la adhesi贸n de L. plantarum 1 H1 y y L. plantarum 1 H2 en el intestino grueso. Se observ贸 secreci贸n de mucina y en la l谩mina propia inflamaci贸n y edema del tejido conectivo. La IgA mostr贸 concentraciones altas en T2 (L. plantarum 1 H1) con 333 mg/100 mL y T3 (L. plantarum 1 H2) con 300 mg/100 mL. Los valores en T3 y T2 en los polimorfonucleares neutr贸filos fueron elevados (65% y 55% respectivamente). El colesterol total fue menor en T2 y T3 con valores de 113.83 y 93.8 mg% respectivamente. El BUN para T2 y T3 fue el m谩s bajo con 7.83 y 8.76 mg% respectivamente. Conclusiones. La utilizaci贸n de probi贸ticos con L. plantarum 1 adicionado en la raci贸n mostr贸 un efecto positivo en la colonizaci贸n y adhesi贸n en el intestino grueso, as铆 como, una respuesta positiva en su sistema inmune
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