Abstract
THE bacterial flora of the chick’s intestinal tract has been studied by many workers. Most of these studies have been concentrated on the cecal flora of 8–12 week old birds. An entirely different aspect of the problem was presented by the investigations of Eyssen and DeSomer (1963). They showed that the most significant changes in young chicks occurred around the sixth day of life and were manifest by an inexplicable decrease in rate of gain accompanied by a decreased intestinal absorption of fats and carbohydrates. Addition to the diet of 20 p.p.m. virginiamycin increased the rate of gain and prevented the malabsorption of fats and carbohydrates. Pensack (1963) verified the results of Eyssen and DeSomer (1963) and showed that other antibiotics, such as chlortetracycline and penicillin, were effective in overcoming the malabsorption syndrome.This investigation was conducted to study the microflora of young chicks undergoing this malabsorption syndrome and…
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