Abstract
SINCE the superior breeds and strains of domestic fowl produce eggs throughout the entire year, they have been generally classified as continuous breeders in contrast to non-domesticated fowl which reproduce only during limited portions of the year. Continuous breeding should, however, be more properly described in relative terms, for in most species thus far investigated the intensity or efficiency of reproduction is not constant throughout the year.It has been observed at the Purdue Poultry Farm (Hogue and Schnetzler, 1937) and by poultrymen and hatcherymen throughout the Mid-West that large numbers of infertile hatching eggs are obtained during the late summer and early fall months. McKenzie and Berliner (1937) found that the ram exhibits marked seasonal differences in semen quantity and quality and Erb, Andrews, and Hilton (1942) reported that in the bull, semen quality is significantly superior during the months of April, May, and June and of the poorest .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
