Download or read book Mycobacteria in Adult Salmonid Fishes Returning to National Fish Hatcheries in Washington, Oregon, and California in 1958-59 written by A. John Ross and published by . This book was released on 1963 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incidence of acid-fast bacillus infections in salmonid fishes at West Coast hatcheries was determined for 1957-59. No evidence was obtained which would indicate a definite trend towards either increased or decreased rates of infection. It is apparent that the incidence of infection is higher in hatchery-marked fish than in unmarked fish. Only one hatchery was found free of infection during the 3 years covered by the investigation. This installation had never used raw salmon products in diet.