Efecto de polen, lactosa y su combinación sobre la digestibilidad e integridad de la mucosa en pollos Broiler

Abstract

The objective of the present investigation was to evaluate the effect of pollen, lactose and its combination on the digestibility and integrity of the mucosa in broiler chickens (Cobb 500 of 1 day of age), up to 15 days of age. The variables evaluated were digestibility of nutrients and impact on the integrity of the intestinal mucosa. The treatments used were the following: T1: (control) 0% without the inclusion of pollen and lactose compared with T2: 0.5% pollen, T3: 2.5% lactose and T4: 0.5% pollen plus 2.5% of lactose in the diet. A randomized block design with four treatments and four repetitions was used, as well as an analysis of variance and Tukey test at 5%, with the statistical program SAS 2000. The results obtained for dry matter digestibility (DMS) and Organic matter digestibility (BMD) did not show significant differences between treatments (P = 0.0978 and P = 0.6031). The Digestibility of Crude Protein and Fat were higher (P = 0.0261 and (P = <0001) for T3 with related values of (74.40, 97.31) respectively, as for the determination of the height of the intestinal villi (A ), showed significant differences between treatments (P = 0.0115), where the treatment T2 and T3 had a longer length with values of (0.95 and 0.98 respectively), however the T4 presented a similar behavior in relation to the rest of treatments with a value of 0.76 In reference to the width of the villi and the depth of the crypts, all the treatments did not show differences (P = 0.4026) .The relationship between the length, width and depth of the intestinal villi gave as greater significance (P = 0.0049) for T2 and T3 with a similar value of 0.56, therefore it is concluded that the inclusion of 0.5% pollen and 2.5% lactose in diets is viable for better digestibility and impact on the intestinal mucosa in Broiler chickens, as an alternative to reduce or eliminate the use of antibiotics as growth promoters.