Abstract
ARTIFICIAL insemination as a method to improve fertility in turkey breeding flocks is of increasing economic importance. The satisfactory application of this technique following the description of Quinn and Burrows (1936) has been demonstrated by many workers including Burrows and Marsden (1938), Parker and Barton (1946), Harper (1949), McCartney (1951) and Lorenz and Carson (1951).A major problem limiting use of artificial insemination is the short time that the semen may be held following collection. Garren and Shaffner (1952) found that the optimum temperature for holding semen of chicken males was 10°C. and hens inseminated with stored semen did not remain fertile as long as those inseminated with fresh semen. Hunsaker, Aitken and Lindblad (1954) observed that 15°C. appeared to be the optimum holding temperature for semen but fertilizing capacity was not lowered significantly by holding semen at either 10° or 20°C. Fertility was found to drop rapidly as length …
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