Abstract
During genetic bidirectional selection on mating behavior in Japanese quail (Mahn, 1968) the heart rate was measured routinely in the selected males to ascertain whether a change in the behavior would affect heart rate. The males were injected with a commercial preparation of sodium pentobarbital (Diabutal, Diamond Laboratories, Inc., Des Moines, Iowa), containing 60 mg. of the active ingredient per milliliter. The amount injected subcutaneously in the neck region averaged about 9 mg./100 gm. body weight. Oxygen consumption was determined first and subsequently the heart rate was measured. The bird was placed on its back on a table and held in place by two rubber bands attached to the legs and wings and two nails in the table surface. The heart rate was taken through two electrodes (24 gauge hypodermic needles) which were inserted under the skin close to the ribs on each side of the thorax. The electrodes were…
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.
