Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 242-247).

Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

The aim of the thesis was to analyse the reproductive efficiency of breeding geese in Fisheries Nové Hrady s.r.o. for the established period. The biggest difference in terms of fertilized eggs (P < 0.01) was observed between the objects of the Lomský předkmeny and Karolínský. A statistically significant difference of 13.42 % (P < 0.05) was among the objects of the Lomský předkmeny and Byňovský. The difference of fertilized eggs between the years 2016 and 2017 was of 25.64%, statistically highly significant (P < 0.01). The highest hatchability of setting eggs was detected in the object Karolínský. Was about of 15.01 % (P < 0.01) higher than in the object Lomský předkmeny, respectively. Byňovský (36.52%). In 2017 there was a large increase in hatchability of setting eggs of 24.95 % (P < 0.01), in comparison with the year 2016. The results of the hatchability of fertile eggs were similar. The biggest difference was recorded between the objects Byňovský and Karolínský. Difference 5.06% was not statistically significant. Differences in hatchability of fertile eggs have been between the object Lomský předkmeny and Karolínský, respectively Byňovský around 2.5 %. From the point of view, hatchability of fertile eggs was between the year 2016 and 2017, a statistically significant difference (7.48%, P < 0.01). The highest fertility of eggs were found in March, in April dropped by 15.82%, in May dropped by 11.60% and in June the decrease was only about 1.19%. A statistically significant effect (P < 0.05) were confirmed between fertility in March and May or June. Towards the end of the laying period by reducing the biological value of eggs occurred and to reduce the hatchability of setting eggs. Hatchability of setting eggs decreased in April by 13.75%, in May of 9.52% and in June only 0.78%. Differences in fertility between March and May or June was statistically significant (P < 0.05). For two-years-old geese, compared with one-years-old geese, fertility eggs fell by 29.1%, for three-years-old geese increased by 34.24% and four-years-old geese have declined by 18.75%. The difference between the two-years-old geese and one-years-old geese, respectively, 3-years-old geese were statistically significant (P < 0.05).

Using a variety of preparations, (intact birds during treadmill and overground walking/running and free-flight; decerebrate birds during electrically induced walking/running, passive wing flapping, and electrically induced wing flapping and "Active" flight), this thesis examines some of the mechanisms involved in the production and control of locomotor-respiratory coordination (entrainment) during alternating hindlimb locomotion (walking/running) and synchronous forelimb locomotion ("flight") in the Canada goose. Significant coordination of locomotor and respiratory rhythms was observed during both modes of locomotion in intact as well as decerebrate birds. While coordination of forelimb motion and respiration was virtually complete, coordination of hindlimb motion and respiration was sporadic. The level of entrainment during hindlimb locomotion, however, increased with increased stride frequency, rather than increased work rate, suggesting that proprioceptive feedback from the limbs is involved in the production of locomotor-respiratory entrainment. Further evidence for a role of proprioceptive feedback in the production of entrainment was provided by the entrainment of respiration by passive wing motion in decerebrate geese. Although feedback from the periphery was sufficient for the entrainment of wing motion and respiration, motor nerve outputs to the wing and respiratory musculature were also synchronized in paralyzed, decerebrate birds during electrically induced activity, in the complete absence of phasic afferent feedback. Thus, both feedback and feedforward mechanisms appear sufficient for the coordination of wing beat and respiration. / Science, Faculty of / Zoology, Department of / Graduate

No description available.

Thesis (Ph. D.)--University of Missouri-Columbia, 2001. / No leaf vii so pagination is misnumbered. Typescript. Vita. Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 2001. / No leaf vii so pagination is misnumbered. Typescript. Vita. Includes bibliographical references. Also available on the Internet.

Thesis (Ph.D.)--University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (April 25, 2007) Vita. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 59-60.

Blood smears of blood collected in 1971 and 1972 from 291 Canada geese at Malheur National Wildlife Refuge were examined to determine the incidence of the avian malarial parasite, Leucocytozoon simondi. No parasites were found. Absence of blood parasites suggests that birds using migration routes to the north and northeast of Malheur are free of the disease. The Leucocytozoon infections known in California waterfowl may be attributable to sources within the flyway east or northeast of California, to infected birds crossing over from other flyways, or abnormal conditions in the molting grounds of sub-adult and non-nesting birds where major flyways converge in northcentral Canada.