Studies on the genetics and physiology of reproduction in the fowl

Abstract

I. The Biology of Fowl Sperm. 1. The effect of testis hormone on the preservation of sperm life in the vas deferens of the fowl. • 2. Functional changes in fowl sperm during their passage through the excurrent ducts of the male. • 3. Fowl sperm immobilization by a temperature - media interaction and its biological significance. • 4. The effect of dilution and density on the fertilizing capacity of fowl sperm suspensions. • 5. The technique and errors involved in counting fowl sperm with the haemacytometer. • 6. Motility and fertilizing capacities of fowl sperm in the excretory ducts. • 7. The preparation of avian sperm smears for microscopy. • • II. The Inheritance of Egg Production in the Dourest Fowl 8. General considerations. • 9. Increases in production, their extent and characteristics with a discussion of causal factors. • 10. Differences in transmitting ability of dams and the degree of dam- daughter correlation. • 11. Reliability of progeny tests of sires. • 12. Relation of production to mortality. • • III. Studies on Egg Quality. 13. Effect of heredity on interior egg quality and shell composition. • 14, Correlations between certain fresh and storage measurements in egg yolk and white. • 15. method of measuring the strength of the yolk membrane.