The Effect of Acrylic Acid Salts on Growth of Chicks

• Published in: Poultry Science
• Main Authors: White-Stevens, R. H., Pensack, J. M., Stokstad, E. L. R., Sieburth, J. McN.
• Format: Text
• Language: English
• Published: Oxford University Press 1962
• Subjects: Articles; Antarctic; Argentine; Weddell; Weddell Sea; Antarc*; Euphausia superba
• Online Access: http://ps.oxfordjournals.org/cgi/content/short/41/6/1909; https://doi.org/10.3382/ps.0411909

INTRODUCTION STUDIES which reported that certain polar birds and animals have “bacteriologically sterile” intestinal contents were reviewed by Sieburth (1961a). In an attempt to determine if “bacteriologically sterile” birds do exist, and if so what factors were responsible, a study on the gastrointestinal microflora and dietary materials of Antarctic birds was conducted during the 1957–1958 Argentine Antarctic Expedition (Sieburth, 1959a). Although bacteriologically sterile birds were not found, typical lactose-fermenting strains of Escherichia coli were not observed in pygoscelid penguins and in certain specimens the non-lactose-fermenting coliform microflora was suppressed in the anterior gastrointestinal contents. A substance which inhibited the anterior gastrointestinal microflora of pygoscelid penguins was traced to the phytoplankton-laden stomach contents of euphausids ( Euphausia superba ) which were the sole diet of the penguins studied. During the trip into the Weddell Sea a green mucilaginous colonial alga, which occurred in half the water samples, was found to possess a . . .