Effect of the administration of probiotic strains on the intestinal microbiota and growth performance parameters of weaned piglets.

ROSS, G., GUSILS, C., OLISZEWSKI, R.

Universidad Nacional de Rosario, Rosario, Argentina

Congreso; V Congreso Argentino de Microbiología General. SAMIGE.; 2008

SAMIGE. Sociedad Argentina de Microbiología

EFFECT OF THE ADMINISTRATION OF PROBIOTIC STRAINS ON THE INTESTINAL MICROBIOTA AND GROWTH PERFORMANCE PARAMETERS OF WEANED PIGLETS. Gloria R. Ross1,4, Carlos H. Gusils2, Rubén Oliszewski3,41,4, Carlos H. Gusils2, Rubén Oliszewski3,4 1 Facultad de Bioquímica, Química, y Farmacia, UNT 2 Facultad de Medicina, UNT-CONICET. 3 Facultad de Agronomía y Zootecnia, UNT.Facultad de Bioquímica, Química, y Farmacia, UNT 2 Facultad de Medicina, UNT-CONICET. 3 Facultad de Agronomía y Zootecnia, UNT.3 Facultad de Agronomía y Zootecnia, UNT. 4 CERELA- CONICET (romiross23@hotmail.com)CERELA- CONICET (romiross23@hotmail.com) The efficiency of animal digestion depends on the endogenous intestinal microbiota. Antibiotics are used to improve the health of animals and the extensive production in poultry and piglet industries. However, the use of these growth-promoting substances has led to an imbalance of the beneficial intestinal flora and the development of antibiotic-resistant bacteria. In recent years, there has been a considerable interest in using probiotic microorganisms as an alternative to the use of antibiotics. Probiotics are viable microorganisms that once ingested produce beneficial effects to the host. Many lactic acid bacteria (LAB) are able to resist the gastrointestinal environment and to produce antimicrobial substances so they are usually used as probiotics. In the present work we evaluated the enterobacteria population and growth performance parameters of weaned piglets after the administration of probiotic LAB strains. On the 35th day of age, a total of 20 piglets were distributed into 2 groups: the non-treated control group and a probiotic supplemented fed group. Each group was housed separately in individual cages. Each experimental group was fed ad libitum on a commercial pelleted diet with free access to tap water for 35 days. In the probiotic supplemented fed group, 3 ml of a 108CFU/ml mixed probiotic culture was daily delivered to animals. Body weight (BW), feed intake (FI), feed conversion efficiency (FCE: indicates the ratio between food consumed and body weight gain) and enterobacteria population counts in faecal samples were measured before and throughout experimental trial (7, 14, 21, 28 and 35 days). The results obtained showed that the group receiving probiotics bacteria exhibited lower FI and FCE values than the control group (P=0.05) but the mean final BW values were not significantly different. Significant changes (P=0.05) in the enterobacteria population were found between control and probiotic supplemented fed group during the experimental period. There were no significant differences in lactobacillus counts in both groups. This fact would be probably due to the intestinal colonization of probiotic LAB administrated to the treated group. These results suggest that the probiotic bacteria used in this study could be used as suitable strains to use widespread as a way to improve the well-being of animals and their growth performance parameters.ad libitum on a commercial pelleted diet with free access to tap water for 35 days. In the probiotic supplemented fed group, 3 ml of a 108CFU/ml mixed probiotic culture was daily delivered to animals. Body weight (BW), feed intake (FI), feed conversion efficiency (FCE: indicates the ratio between food consumed and body weight gain) and enterobacteria population counts in faecal samples were measured before and throughout experimental trial (7, 14, 21, 28 and 35 days). The results obtained showed that the group receiving probiotics bacteria exhibited lower FI and FCE values than the control group (P=0.05) but the mean final BW values were not significantly different. Significant changes (P=0.05) in the enterobacteria population were found between control and probiotic supplemented fed group during the experimental period. There were no significant differences in lactobacillus counts in both groups. This fact would be probably due to the intestinal colonization of probiotic LAB administrated to the treated group. These results suggest that the probiotic bacteria used in this study could be used as suitable strains to use widespread as a way to improve the well-being of animals and their growth performance parameters.a commercial pelleted diet with free access to tap water for 35 days. In the probiotic supplemented fed group, 3 ml of a 108CFU/ml mixed probiotic culture was daily delivered to animals. Body weight (BW), feed intake (FI), feed conversion efficiency (FCE: indicates the ratio between food consumed and body weight gain) and enterobacteria population counts in faecal samples were measured before and throughout experimental trial (7, 14, 21, 28 and 35 days). The results obtained showed that the group receiving probiotics bacteria exhibited lower FI and FCE values than the control group (P=0.05) but the mean final BW values were not significantly different. Significant changes (P=0.05) in the enterobacteria population were found between control and probiotic supplemented fed group during the experimental period. There were no significant differences in lactobacillus counts in both groups. This fact would be probably due to the intestinal colonization of probiotic LAB administrated to the treated group. These results suggest that the probiotic bacteria used in this study could be used as suitable strains to use widespread as a way to improve the well-being of animals and their growth performance parameters.(P=0.05) but the mean final BW values were not significantly different. Significant changes (P=0.05) in the enterobacteria population were found between control and probiotic supplemented fed group during the experimental period. There were no significant differences in lactobacillus counts in both groups. This fact would be probably due to the intestinal colonization of probiotic LAB administrated to the treated group. These results suggest that the probiotic bacteria used in this study could be used as suitable strains to use widespread as a way to improve the well-being of animals and their growth performance parameters.(P=0.05) in the enterobacteria population were found between control and probiotic supplemented fed group during the experimental period. There were no significant differences in lactobacillus counts in both groups. This fact would be probably due to the intestinal colonization of probiotic LAB administrated to the treated group. These results suggest that the probiotic bacteria used in this study could be used as suitable strains to use widespread as a way to improve the well-being of animals and their growth performance parameters.