Spelling suggestions: "subject:"broilers (poultry) physiology"" "subject:"broilers (poultry) hophysiology""
1 |
Natural development and dietary regulation of body and intestinal growth in broiler chickensIji, Paul Ade. January 1998 (has links) (PDF)
Corrigenda inserted behind title page. Bibliography: leaves 275-306. The pattern of body growth and intestinal development of an Australian strain of broiler chicken, the Steggles x Ross (F1) in response to different diets was studied. Five experiments were designed to examine the pattern of growth and mechanisms involved. In four other experiments, the mechanisms underlying the gross response of the broiler chicks to dietary ingredients, anti-nutritive factors and growth enhancers were examined. Results indicated that a rapid development of the small intestine preceded significant overall body growth. Body growth would, however, depend more on the various physiological events such as those related to mucosal growth and renewal, digestive enzyme function, and nutrient transport. Some of the differences observed in productivity of broiler chickens on different diets were traced to events at the intestinal level.
|
2 |
Factors affecting fat deposition in broiler chickensLaurin, David E. January 1984 (has links)
No description available.
|
3 |
Natural development and dietary regulation of body and intestinal growth in broiler chickens / Paul Ade Iji.Iji, Paul Ade January 1998 (has links)
Corrigenda inserted behind title page. / Bibliography: leaves 275-306. / xxxv, 306 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The pattern of body growth and intestinal development of an Australian strain of broiler chicken, the Steggles x Ross (F1) in response to different diets was studied. Five experiments were designed to examine the pattern of growth and mechanisms involved. In four other experiments, the mechanisms underlying the gross response of the broiler chicks to dietary ingredients, anti-nutritive factors and growth enhancers were examined. Results indicated that a rapid development of the small intestine preceded significant overall body growth. Body growth would, however, depend more on the various physiological events such as those related to mucosal growth and renewal, digestive enzyme function, and nutrient transport. Some of the differences observed in productivity of broiler chickens on different diets were traced to events at the intestinal level. / Thesis (Ph.D.)--University of Adelaide, Dept. of Animal Sciences, 1999
|
4 |
Factors affecting fat deposition in broiler chickensLaurin, David E. January 1984 (has links)
No description available.
|
5 |
A dynamic mechanistic anaylsis of the thermal interaction between a broiler chicken and its surrounding environment.January 2010 (has links)
Chickens, being open thermodynamic systems, maintain a constant exchange of energy
and matter with their surrounding environment. In order to avoid reaching
thermodynamic equilibrium with the environment the bird makes use of homeostatic
mechanisms. These ensure the reduction of the entropy of the system to values that
guarantee its integrality.
The thermoregulatory response is a major component of the homeostatic machinery of
living systems. This induces modifications of physiological parameters of the bird,
taking the system “bird” to a new steady state. The achievement of this new state is
possible only if the thermoregulatory mechanisms of the birds are able to counteract the
environmental demand/burden. A successful thermoregulatory response depends not
only on the achievement of that steady state, but also on the compatibility of the value
of those parameters with life (especially regarding the value achieved by body
temperature) as well as on the time of exposure to the environmental perturbation.
Based on those premises, this thesis presents a mechanistic analysis of the thermal
interaction between a broiler and its surroundings. The first section of the document
introduces the reader to the general concepts of thermodynamics of living systems and
physics of heat exchange. The second use mechanistic simulation techniques to represent
the environment, the thermal and thermoregulatory properties of a broiler chicken and
the interaction between bird and environment. Finally, the third section describes a
conceptual simulation model able to predict, over a given period of time, the response of
a bird to environmental conditions above those associated with least thermoregulatory
effort. Various simulation exercises are reported, the objectives being to study the
behaviour of certain variables and to question the validity of current theories of
thermoregulation in environmental physiology. / Thesis (Ph.D.)-University of KwaZulu-Natal, Pietermaritzburg, 2010.
|
Page generated in 0.0805 seconds