Effect of Varying Levels of Glutamine Addition on the Composition of the Intestinal Flora and the Productivity of Broilers Grown at Various Densities

Abstract

Abstract The purpose of this study was to examine the effects of dietary glutamine on chicken performance, intestinal microbiota, and certain antioxidant markers at various stocking densities. (504) Ross 308 broiler chickens were used in this study; they were jointly grown from day one through week one and then divided into six groups at random. They were raised in floor breeding cages, the transactions were in the following order:1-(G1): the control group (12 birds/ m2), (G2): the high-density group (16 birds/m2) was fed with standard diet and normal water, (G3) and (G4) 12 birds / m2 with the addition of 2.5 or 5 gm Glutamine / liter of drinking water respectively. (G5) and (G6) 16 birds / m2 with the addition of 2.5 or 5 gm Glutamine / liter of drinking water respectively. Adding glutamine to broiler chickens raised at a density of 12 birds/m2 at a concentration of 5 g/l had a positive effect on the productive traits, and the birds raised at a density of 16 birds/m2 showed similar performance for a group of birds raised at a density of 12 birds/m2 after they were treated with glutamine G5 & G6. The results showed a significant decline in the productive traits of these chickens. Lactic Acid Bacteria recorded a significant superiority in the treatments of adding glutamine, even though there were no significant differences in the total number of enter bacteria and E-coli bacteria. It should be noted that this improvement in productive performance was accompanied by an improvement intestinal flora in glutamine addition. We draw the conclusion from this study that administering glutamine to broiler chickens kept in high density could enhance their productivity, and that this was linked to an improvement in the composition of the intestinal flora.