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Browsing by Author "Ciro Galeano, Johana"

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    Adición de Enterococcus faecium mejora poblaciones celulares inmunes y anticuerpos vacunales de lechones destetos
    (Corporación Universitaria Lasallista, Editorial Lasallista, 2016) Herrera Franco, Víctor H.; Ciro Galeano, Johana; Parra Suescún, Jaime Eduardo
    Animals are subjected, at the moment the sucking pig cannot produce an adequate immunological activity, to several stress types during waning, due to the fact that the passive immunity acquired at the colostrum is gradually reduced and the sucking pig has a low immunological response during post weaning. Objective. Determine the effect of probiotics (Lactobacillus acidophilus, Lactobacillus casei and Enterococcus faecium) on the populations of immune cells in the blood of weaners. Materials and methods. The experiment was made with 80 weaners with 2 days of age, fed with two diets: commercial diet with and without probiotics. For the first, different probiotics were added in the weaner ́s water. A blood sample was taken from the jugular vein at the 1, 15 and 30 post weaning days. A randomized blocks design was used, arranged with repeated measures during time. Every animal was randomized to one of 15 treatments (5 diets*3times). Results. A significant increase (P<0.01) in the number of immune blood cells and of the number of vaccine antibodies in the animals that consumed E. faecium, in comparison to those that consumed the diet with antibiotics. Conclusions.E. faecium improves the animal ́s response to stressful stimuli such as weaning, having a controlled increase of immune blood cells
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    Efecto del método de colección sobre la digestibilidad total de soya extruida en cerdos
    (Corporación Universitaria Lasallista, 2012-08-22) Gutiérrez Vergara, Cristian; Ciro Galeano, Johana; Parra Suescún, Jaime Eduardo
    Introduction: Total digestibility can be evaluated by the use of direct and indirect methods. The results, it is supposed should be identical, under normal physiological conditions, for digestibility studies in pigs. The literature available, nevertheless, reports lower digestibility coefficients for the indirect method. Objective: To compare different collection methods for the total digestibility (TD) of extruded soybean protein in pigs. Materials and methods: The field work was developed at San Pablo Center, in Universidad Nacional de Colombia. 18 pigs with a live weight of 35.5kg were used. They were housed in independent cages and their experimental diet contained extruded soybean as protein source, and also met all of the minimal nutrition requirements. The experimental work consisted in five days of adaptation to the experimental diet and 10 days of collecting the feces and nylon bags. The experimental treatments were: Total collection of feces (TCF), mobile nylon bag technique (MNBT). Method of the indicator: Chromium oxide (MI1) and ferric oxide (MI2). The data of rough protein disappearance were analyzed with a statistic design of random blocks, by the use of the GLM procedure of the SAS statistic package (2006). Results: Statistic differences (P<0.01) appeared between treatments, in which TCF and MNBT had the highest digestibility coefficients. There was no statistic difference (P>0.01) between MI1 and MI2. Conclusions: TCF and MNBT are practical and reliable procedures in nutritional valuing studies for the food used in growing pigs.