Abstract
IT IS a common practice to select for breeding purposes cocks that are closely related to hens which have good records for egg production, i.e., the focus of interest is on the genetic constitution of the female. A number of other characteristics, usually morphological, may also be considered. Burrows and Titus (1939) have reported that semen production shows no definite relationship to the appearance of the males nor to their display of sexual activity. Can one assume that males are more or less uniform in their tendencies to mate? Is it possible to devise a technique for the evaluation of the relative sexuality of cocks? Beach (1942) working with inexperienced rats found that males vary in their copulatory threshold; some required incentive animals that were highly receptive, while others were stimulated by non-receptive females or even by relatively passive young males. Stone (1939) in testing male rats found that individuals . . .
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Publication Info
- Year
- 1951
- Type
- article
- Volume
- 30
- Issue
- 5
- Pages
- 687-693
- Citations
- 40
- Access
- Closed
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Identifiers
- DOI
- 10.3382/ps.0300687